it is hypothesized that early photosynthesis was anoxygenic. think about the role of oxygen in photosynthesis as carried out by green plants, green algae, and cyanobacteria (as opposed to modern organisms that use anoxygenic photosynthesis). what would have been different in anoxygenic photosynthesis (or is different in modern organisms that use anoxygenic photosynthesis)?
In anoxygenic photosynthesis, oxygen is not produced as a byproduct. Instead, alternative electron donors are used, and specialized pigments and electron transport chains are involved.
In the process of oxygenic photosynthesis, such as that carried out by green plants, green algae, and cyanobacteria, oxygen is produced as a byproduct using chlorophylls and accessory pigments. In contrast, anoxygenic photosynthesis does not involve oxygen production, and instead uses different pigments and electron donors. This difference in the production of oxygen and the use of pigments and electron donors reflects the evolution of photosynthetic processes over time, and has important implications for the development of life on Earth.
What is pigments ?
Pigments are molecules that absorb certain wavelengths of light and reflect or transmit others. They are responsible for the colors we see in plants, animals, and other natural objects. In biology, pigments play a variety of roles, such as providing protection against harmful ultraviolet radiation, assisting in photosynthesis, and aiding in communication and camouflage.
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4. Analyze the pedigree to the right. Notice the dots in the center of some individuals? that means they are carriers for the disease. With this information, is this disease likely autosomal dominant, autosomal recessive, x-linked recessive, or x-linked dominant? why?
This pedigree is consistent with autosomal dominant inheritance.
The reason is that affected individuals marrying unaffected individuals have affected children, so the trait is dominant. Males do not pass the trait to all their daughters, so it cannot be X-linked dominant.
What is an autosomal dominant inheritance?Autosomal dominant inheritance is a pattern of inheritance in which a single copy of an abnormal gene (located on one of the autosomes, which are the non-sex chromosomes) from one parent is enough to cause a genetic disorder or disease.
In this inheritance pattern, the gene responsible for the disorder is dominant, meaning that a person who inherits one copy of the abnormal gene will develop the disorder. Autosomal dominant disorders often appear in every generation of an affected family and can affect both males and females equally.
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which of the following faunal remains are most widely useful for archaeologists for determining ancient environmental conditions? which of the following faunal remains are most widely useful for archaeologists for determining ancient environmental conditions? large marine animals including fish, mammals, and sea birds toothed mammals, especially domesticated varieties such as cows and canines microfauna such as microscopic organisms, insects, and rodents macrofauna such as bison, mammoths, and other large mammals
The most widely useful faunal remains for archaeologists to determine ancient environmental conditions are microfauna such as microscopic organisms, insects, and rodents.
What are faunal remains? Faunal remains are animal remains discovered by archaeologists. Animal bones, shells, and other hard tissues that have been recovered from archaeological sites are examples of faunal remains. These remains aid in the reconstruction of ancient people's diet, environment, and economy.
What are environmental conditions? Environmental conditions refer to the characteristics and forces that influence an environment. These forces can be physical or biological, and they may be affected by natural or human activities. Temperature, precipitation, soil, wind, sunlight, and atmospheric gases are examples of physical environmental conditions.
What is microfauna?Microfauna is the tiniest animals in a given environment. They are often microscopic, measuring less than 1 mm in size. They belong to a variety of groups, including insects, mites, nematodes, protozoa, and other microorganisms. Some of these microorganisms have calcified shells that can become fossilized over time.
Microfauna such as microscopic organisms, insects, and rodents are the most widely useful faunal remains for archaeologists to determine ancient environmental conditions.
These remains are beneficial since they can provide information about climate, vegetation, and topography. In addition, microfauna is often sensitive to environmental changes, and their presence or absence can provide insight into how environments have changed over time.
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True or false: Glycolysis occurs in the mitochondria of a typical eukaryotic cell producing 4 ATP, 2 NADH, and 2 molecules of pyruvate. Select an answer and submit. For keyboard navigation, use the up
Answer:
False
Explanation:
False. Glycolysis occurs in the cytoplasm of a eukaryotic cell, not in the mitochondria. Glycolysis produces a net gain of 2 ATP, 2 NADH, and 2 molecules of pyruvate. The pyruvate is then transported into the mitochondria for further processing through the citric acid cycle and oxidative phosphorylation to produce additional ATP.
What substance released from damaged endothelium triggers the extrinsic coagulation pathway?
The substance released from damaged endothelium that triggers the extrinsic coagulation pathway is tissue factor, also known as factor III.
Tissue factor is a protein that is found on the surface of cells in the blood vessels and is not normally exposed to the bloodstream. However, when there is damage to the blood vessel or surrounding tissue, is released and comes into contact with factor VII in the bloodstream. This contact activates factor VII, which then initiates the extrinsic pathway of the coagulation cascade.
The extrinsic pathway is one of the two pathways that lead to the activation of thrombin and the formation of a fibrin clot. The other pathway is the intrinsic pathway, which is initiated by factors that are present within the blood itself.
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As a cell moves through the cell cycle, it grows in size and eventually reproduces. Which part of this process occurs during interphase?
A. The cell makes additional organelles.
B. The cell divides into two daughter cells.
C. The cell's chromatin condenses into chromosomes.
D. The cell organizes its copied chromosomes into two identical nuclei.
help please
Answer:
It's A. The cell makes additional organelles.
Explanation:
During interphase, the cell makes additional organelles and undergoes a period of growth and preparation before entering the next phase of the cell cycle. Therefore, the correct answer is A. The cell makes additional organelles.
Interphase is the longest phase of the cell cycle, accounting for about 90% of the cycle's total duration. During this phase, the cell carries out its normal metabolic activities, replicates its DNA, and prepares for cell division. The other phases of the cell cycle, including mitosis and cytokinesis, are involved in the actual division of the cell into two daughter cells.
Answer B is incorrect because cell division occurs during the later stages of the cell cycle, specifically during the mitosis and cytokinesis phases. Answer C is incorrect because the condensation of chromatin into chromosomes occurs during prophase, which is the first phase of mitosis, not during interphase. Finally, answer D is incorrect because the organization of chromosomes into two identical nuclei also occurs during the later stages of the cell cycle, specifically during the telophase phase of mitosis.
Therefore, the correct answer is A, which describes a key aspect of interphase, which is the growth and preparation of the cell for cell division, including the synthesis of additional organelles needed for the two daughter cells.
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Shoots can easily fall over or be carried away by wind or water. What function of the root system prevents this from happening?
OA. Transpiration.
OB. Cell division
OC. Storage
OD. Anchorage
The anchoring function of the root system stops the shoots from toppling over or being swept away by the wind or water.
What role do root hairs play?The surface of exchange between the plant's root system and the soil is increased by their distinctive lateral elongation. The uptake of water and nutrients from the rhizosphere is the primary function of root hairs.
What tasks does the shoot system perform?The buds, fruits, flowers, and leaves that make up the shoot system. The shoot system supports the structure of the plant and the leaves, as well as serving to store nutrients and water for plants.
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Please answer the question in the image.
This is an example of negative feedback.
In this case option A is correct
Negative feedback is a mechanism that maintains a stable system by counteracting changes. In this case, when blood sugar levels rise, the release of insulin by the pancreas counteracts the increase, bringing blood sugar levels back to a stable level.
Once the blood sugar levels are within the normal range, the release of insulin slows down, stopping the feedback loop.
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This is an example of negative feedback.
In this case op,tion A is correct
What is Glucose?
It is an important energy source in living organisms and is the primary source of energy for the brain. Glucose is produced by plants during photosynthesis and is an important component of many foods, such as fruits, honey, and some vegetables.
In the human body, glucose is transported in the blood to cells throughout the body where it is used to produce energy through a process called cellular respiration. The body tightly regulates the concentration of glucose in the blood to ensure that cells have a constant supply of energy.
Negative feedback is a mechanism that maintains a stable system by counteracting changes.
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what would u find in a human muscle cell?
The graph on the left shows how land usage changes in a region as a human population grows. The graph on the right shows biodiversity in the region at the same time.
Which statement is supported by the evidence in the graphs?
A.
As croplands decrease, biodiversity decreases.
B.
As the amount of grassland decreases, biodiversity declines.
C.
An increase in the amount of forest results in declining biodiversity.
D.
An increase in the industrial use of land results in increased biodiversity.
Answer:
Explanation:B. As the amount of grassland decreases, biodiversity declines.
This statement is supported by the evidence in the graphs. As the human population grows, more land is converted from grassland to cropland, urban areas, and other uses. As the graph on the right shows, biodiversity declines as the amount of grassland decreases. This is likely because grasslands are home to a wide variety of plant and animal species, many of which cannot survive in other types of environments. The loss of grassland habitat can have a significant impact on biodiversity, particularly for species that are specialized to this type of ecosystem.
The statement that is supported by the evidence in the graphs is that as the amount of grassland decreases, biodiversity declines. That is option B, as biodiversity is currently under threat from a range of human activities, such as habitat destruction, climate change, pollution, overfishing, and hunting.
What is biodiversity?Biodiversity refers to the variety of living organisms, including plants, animals, fungi, and microorganisms, found in an ecosystem or on Earth. It encompasses the genetic, species, and ecosystem diversity of the planet and is a measure of the richness and complexity of life on Earth. Biodiversity is important for maintaining the ecological balance of the planet and for supporting the many ecosystem services that benefit human societies, such as air and water purification, soil formation, nutrient cycling, and climate regulation.
Hence, the statement that is supported by the evidence in the graphs is that as the amount of grassland decreases, biodiversity declines. That is option B.
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What is the definition of the word affals
What will be the importance of labelling your slides
Slide labels make it easier to identify and keep track of your samples during processing and storage.
Labeling your slides can help you more effectively structure your presentation. You can find the slide you need when presenting by providing each slide a distinct and illustrative label.Clarity: Before you even present a slide, labels can assist your audience comprehend its content. They may be able to follow your presentation and remain interested as a result.Accessibility: If you intend to share your presentation with others or post it online, labelling your slides is especially crucial. Your presentation can be more accessible to folks with impairments, such as those who use screen readers, by using clear labels. this small procedure helps in providing efficient result.
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name the procedure that producers use to chemically bond this macronutrient into molecules?
Answer:
The macronutrient that is chemically bonded into molecules by producers is carbon, and the process is called photosynthesis.
Using letters a b c d and e for molecules, illustrate how these would interrelate in an unbranched metabolic pathway. Then, illustrate a metabolic pathway in which C branches to form D and E. Describe how your two pathways would be affected by an inborn error of metabolism between C and D
When a path is linear, it follows A, B, C, D, and E. A cyclical pathway is one that follows the formula ABCDEA or a variant like ABC Either A or D.
What are the steps in chemical reactions?a set of chemical processes that either combine simple components to form complex molecules or disassemble complex molecules into simpler ones. has roughly 10 enzymes for 10 reactions on average. It resembles a trail or road that leads to or feeds into another reaction. They could branch or be linear (cyclical).
What kinds of chemical reactions are examples of?Your liver, cellular respiration, and glycolysis.
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3. The Sun strikes the Earth the most at the Equator and the least at the poles. This causes warm air to_____ from the equator and cold air to____ at the poles.
a. stay, leave
b. leave, stay
c. rise, sink
d. sink, rise
The Sun strikes the Earth the most at the Equator and the least at the poles. This causes warm air to rise from the equator and cold air to sink at the poles. Therefore, the correct answer is (c) rise, sink .
How earth rotates ?
The Earth rotates on its axis, an imaginary line that runs through the North and South Poles, once every 24 hours. This rotation gives rise to day and night and causes the stars, sun, and moon to appear to move across the sky. The Earth's rotation is caused by the initial angular momentum it received from the big bang and the conservation of angular momentum as it continues to rotate.
The direction of rotation is from west to east, which is known as prograde rotation. The speed of rotation is fastest at the equator and slower at the poles due to the Earth's shape and composition. The Earth's rotation plays a significant role in regulating the planet's climate and weather patterns, as well as influencing the behavior of ocean currents and other natural phenomena.
The Earth revolves around the Sun in an elliptical orbit, completing one revolution in 365.24 days, which is one year. This revolution is caused by the gravitational attraction between the Sun and Earth. As the Earth orbits the Sun, it also rotates on its axis, causing day and night. The changing distance between the Earth and Sun throughout the year affects the amount of solar energy that reaches the Earth, which in turn influences the planet's climate and weather patterns.
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10.
Soil, water, forests, oil, iron, and coal are all examples of
scarce resources
capital resources
human resources
natural resources
Answer:
Natural resources
Explanation:
Which change can remote sensing best help detect over time?
By measuring a region's reflected and emitted radiation from a distance, remote sensing is the process of identifying and keeping track of its physical features. Remotely sensed images are captured via special cameras.
What types of information can be obtained by remote sensing?Geospatial data has been gathered by satellites for more than 60 years. An ever-growing range of applications, including weather forecasting, mapping, environmental research, military intelligence, and more, make use of the data they collect.
What three applications of remote sensing are there?The most frequent source of radiation detected by passive sensors is reflected sunlight. The use of radiometers, charge-coupled devices, infrared, and film cameras are a few examples of passive remote sensors.
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abscisic acid (aba) is synthesized in the roots in response to decreased soil water potential. aba then translocates to the leaves, where it rapidly alters the osmotic potential of guard cells. what effect would this have on the stomata and the process of transpiration?
Abscisic acid (aba) is synthesized in the roots in response to decreased soil water potential. ABA then translocates to the leaves, where it rapidly alters the osmotic potential of guard cells. The effect would this have on the stomata and the process of transpiration is: that it slows down transpiration by causing the stomata to close tightly.
Abscisic acid (ABA) is synthesized in roots as a response to decreased soil water potential. ABA translocates to leaves and immediately alters the osmotic potential of guard cells. Abscisic acid (ABA) has a considerable impact on stomata and the process of transpiration. Abscisic acid (ABA) is a hormone that regulates the stomata in plants.
ABA causes the stomata to shut down, reducing the transpiration rate of the plant. The hormone ABA acts on guard cells by altering their ion transfer patterns, resulting in stomatal closure. Transpiration is the process of water loss from plants due to transpiration, and ABA is involved in regulating the loss of water in plants.
ABA inhibits the opening of the stomata by lowering the water potential of the cells, causing them to close. ABA can also signal the cells to lower their water content, which aids in the cells' shrinking and allows the stomata to close more tightly.ABA plays a significant role in plants' growth and survival, especially during drought stress.
In summary, the impact of ABA on the stomata and the process of transpiration is that it slows down transpiration by causing the stomata to close tightly.
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What is the importance of biodiversity?
A. It gives us evolution.
B. It restores balance in species that have become outnumbered.
C. The diversity of an ecosystem creates stability and success.
D. This is how we get different species.
Answer:
C. The diversity of an ecosystem creates stability and success.
Explanation:
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For Ecological Succession of a Pond:
DACBB → C → A → D (the rest are found in the explanation below)Why is this a type of succession?6) This is an example of ecological succession because it describes the gradual and predictable changes in the community of organisms in the pond over time, resulting from changes in the abiotic (non-living) and biotic (living) factors in the ecosystem.
7) This is an example of primary succession because it begins with the formation of a new pond in a previously uninhabited area.
8) Following the steps pictured, as the pond becomes more shallow and the amphibian plants, shrubs, and trees grow, there will be changes in the types of animals that are attracted to the pond.
9) Two stages that might attract animals to the community are the submerged plant stage and the amphibian plant stage. During the submerged plant stage, animals such as fish and invertebrates would be attracted to the pond to feed on the algae and other small organisms that live in and around the submerged plants. During the amphibian plant stage, animals such as frogs and salamanders would be attracted to the pond to feed on the insects and other small organisms that live among the amphibian plants.
10) Ecological succession is a gradual process that can take many years or even centuries to complete. While it is possible for succession to happen more quickly in some situations, such as in areas that have been disturbed by human activities, it is unlikely to happen in a short amount of time. This is because ecological succession involves complex interactions between the biotic and abiotic factors in an ecosystem, and these interactions take time to develop and stabilize.
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you hope to study a gene that codes for a neurotransmitter protein produced in human brain cells. you know the amino acid sequence of the protein. explain how you might (a) identify what genes are expressed in a specific type of brain cell, (b) identify (and isolate) the neurotransmitter gene, (c) produce multiple copies of the gene for study, and (d) produce large quantities of the neurotransmitter for evaluation as a potential medication.
The gene that is expressed in a specific type of brain cell: RNA sequencing,
the neurotransmitter gene is: Straightforward,
produce multiple copies of the gene for the study is: cloned gene,
and produce large quantities of the neurotransmitter for evaluation as a potential medication is: the cell culture system.
Identify genes that are expressed in a specific type of brain cellThe genetic material can be extracted from the specific brain cells that make the protein. RNA sequencing can be used to compare the genetic material from a particular cell to the reference genome in order to find out which genes are expressed in that cell. An RNA sequencing database can then be used to compare the expressed genes to find out which ones are involved in the synthesis of the protein.
Identify (and isolate) the neurotransmitter geneIsolating the gene for the neurotransmitter protein is straightforward because its amino acid sequence is already known. Using PCR, the neurotransmitter gene can be amplified and cloned into a plasmid vector.
Produce multiple copies of the gene for the studyThe cloned gene can then be transformed into bacteria such as E. coli, which can produce many copies of the gene. The gene can be purified using gel electrophoresis and DNA sequencing. Alternatively, a baculovirus system can be used to express the gene in insect cells.
Produce large quantities of the neurotransmitter for evaluation as a potential medicationA cell culture system can be used to produce large amounts of the neurotransmitter protein for study. The protein can be purified from the cell culture supernatant using chromatography or other protein purification techniques. The neurotransmitter protein can be tested to see whether it is effective as a medication, and its safety can be evaluated.
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7. Many athletes who are in good condition have heartbeat rates that are substantially slower than the 60 to 80 beats per minute (bpm) considered normal for the rest of us. Former cyclist Lance Armstrong routinely had a resting heart rate of about 32 bpm. For a non-athlete, a heartbeat rate this low might be cause for hospitalization, but the rate of blood flow in an athlete's body is not affected by it. How can an athlete's body function normally with such a low heartbeat rate? A. People who are athletes are born with slow heart rates so it is normal for them. B. Exercise strengthens the athlete's heart muscle so more blood is pumped with each beat. C. An athlete's heart rate is higher than normal while exercising so it averages out to normal. D. More capillaries appear in muscle tissue with exercise so blood flow is more efficient O * S
Exercise strengthens the athlete's heart muscle so more blood is pumped with each beat. The correct answer is B.
Athletes who train regularly and are in good physical condition have larger, stronger hearts than non-athletes. This allows their hearts to pump more blood with each beat, which means that their hearts don't have to beat as frequently to maintain a normal rate of blood flow. Additionally, athletes often have more efficient circulatory systems, with more capillaries in their muscles, allowing for more oxygen to be delivered to the tissues. These adaptations allow athletes to maintain a normal rate of blood flow even with a slower resting heart rate. While an athlete's heart rate may be higher than normal during exercise, their resting heart rate can be significantly lower due to the adaptations that come with training and physical conditioning.
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A passion fruit flower has two flower shape phenotypes: square . In addition, flowers can be blue (B) or purple hl You start with homorygous su two flower shape phenotypes Square (R) or round homozygous round, purple parents, and cross purple parents, and cross them. Your initial hypothesis is that the genes found on different chromosomes. You also be that allele R is dominant over a allele Bis dominant over allele b. What are the initial parental genotypes? RRD XY E56 What are the F1 genotypes and their frequencies? vob w the F1 to self-fertilize, Predict the phenotypes of the F2 offspring and their ratios, If your hypothesis that the genes are on different chromosomes is correct RB ROBO RRBb RrBB Rr Bb RRBO RR66 RvBb Rrob rB RvBB Rr Bb TUBO Vr Bb Rr Bb Rr66 rr Bb rrbb flowe. Expected F2 phenotypes and ratios: 9 Square, blue flowers: 3 Square, purple flowers: 3 round, blue I round, purple flowers. After performing the crosses, you observe the following: 76 round, purple passion flowers Yr ble 24 square, blue passion flowers - B- In regards to the gene controlling flower shape, which allele is dominant? Which is recessive? Dominant allele: r Recessive allele: R In regards to the gene controlling flower color, which allele is dominant? Which is recessive? Dominant allele: b Recessive allele: B What would need to change about your initial hypothesis to account for the observed results? Support your revised hypothesis with a Chi-square test. obs. exp. Cobs - exp/exp. round, purple flowers Squele blue flowe's 24
The dominant allele for flower color is actually b, and the recessive allele is B. This means that the initial hypothesis that the genes are on different chromosomes is incorrect. The genes must be on the same chromosome and linked, which is why the observed results do not match the expected results.
The initial parental genotypes are RRBB (square, blue) and rrbb (round, purple).
The F1 genotypes and their frequencies are RrBb (square, blue) with a frequency of 100%. When the F1 generation is self-fertilized, the expected F2 phenotypes and ratios are 9 square, blue flowers (RRBB, RrBB, RRBb, RrBb), 3 square, purple flowers (RRbb, Rrbb), 3 round, blue flowers (rrBB, rrBb), and 1 round, purple flower (rrbb).
However, the observed results do not match the expected results. The dominant allele for flower shape is actually r, and the recessive allele is R.
To support this revised hypothesis with a Chi-square test, we can calculate the expected and observed values for each phenotype and use the formula (observed - expected)² / expected to find the Chi-squared value for each phenotype.
The sum of these values will give us the Chi-squared value for the entire experiment. We can then compare this value to the critical value for the degrees of freedom (df = 3) and the significance level (0.05) to determine if the observed results are significantly different from the expected results.
If the Chi-squared value is greater than the critical value, then the observed results are significantly different from the expected results and the revised hypothesis is supported.
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Find in the sequence where each primer binds. Draw a box around where each primer will bind. In this case, exactly how many base pairs do you expect your pcr product to be?
The size of the base pairs , the specificity of the primers, and the PCR reaction conditions can all affect the expected size of the PCR product.
In general, PCR primers are designed to bind to complementary sequences flanking the target region of interest.
To identify where the primers will bind, the sequence can be searched using online tools such as BLAST or Primer3, which can identify potential primer binding sites and design primers specific to the target region.
Once the primers have been designed and their binding sites determined, the expected size of the PCR product can be calculated by subtracting the position of the 5' end of the forward primer from the position of the 3' end of the reverse primer, minus any overlap between the primers. The expected size of the PCR product can vary depending on the size of the target region, the specificity of the primers, and the conditions used in the PCR reaction.
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What amount does Salary.com report as the median salary for a typical massage therapist?
$35,000
$52,000
$43,000
$60,000
According to Salary.com, the median salary for a typical massage therapist is $43,000.
What is a massage therapists?Massage therapists knead muscles and other soft tissues of the body to provide treatment for injuries and also to promote general wellness. Massage therapists apply pressure to manipulate the soft tissues and joints of the body. A person who practices massage therapy is a massage therapist.
Massage therapist is trained individual who is licensed or certified to therapeutically manipulate the muscles and other soft tissues of the body using one or both hands or instrument. Physical therapists focus intensive sessions on particular area, whereas massage sessions take longer and encompasses entire body.
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*** Now look at some of the other boomslang BLAST results and answer the following questions.***
Even though Boomslang_01 had a pretty good blast hit, there were proportionately less of the BLAST
alignment scores colored red (200); most were magenta (80-200) or lower scores. Why do you think the
BLAST alignment scores for Boomslang_01 were below other sequence alignment scores despite having nearly
identical sequences?
The BLAST alignment scores for Boomslang 01 may have been lower than those of other sequences.
Why do you think the BLAST alignment scores for Boomslang_01 were below other sequence alignment scores despite having nearly identical sequences?1. The length of the sequence may affect the alignment scores. Boomslang 01 may be shorter than other sequences despite having a nearly identical sequence, which could lower alignment scores. 2. The quality of the sequence data may also affect the alignment scores. Boomslang 01's sequence data may contain more errors or gaps if it is of lower quality than the other sequences, which could lower the alignment scores. 3. The alignment scores may change if the BLAST algorithm uses different parameters for each sequence. For instance, different word sizes, gap penalties, and scoring system parameters could produce different alignment scores.
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In no more than two typed pages, describe the role, either for good or for bad, of the following in achieving energy sustainability:
-wind, solar, hydro, and wave-powered electricity,
-cars that run on hydrogen fuel,
-electric cars,
-improvements in residential energy efficiency, and
-government policies that mandate new technologies to improve motor fuel efficiency
-please help-
The description of the role, for either for good or for bad, following in achieving energy sustainability is given below:
Electricity and renewable energy (Updated May 2019)
There is strong public support for the use of renewable energy, notably solar and wind energy, which provide power without emitting any carbon dioxide.
Using these for power is dependent on the cost and efficiency of the technology, which is always improving, lowering prices per peak kilowatt and per kWh at the source.
Using solar and wind energy in a grid becomes troublesome at large levels for a variety of complex but now well-established reasons. The supply does not match the demand.
Due to the intermittent nature of solar and wind, backup producing capacity is necessary. System costs rise as the quantity of variable renewables increases.
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Explain global emissions of GHGs. For example, the United States has only a small percentage of the world's population but emits a disproportionate share of global CO2. China has a population of over a billion people. What would happen if China "developed" to the point where most families owned an automobile that emitted CO2?
Although it only makes up roughly 5% of the world's population, the United States is the source of 30% of the world's energy consumption and 28% of its carbon emissions.
Which GHG accounts for the majority or most of the overall US emissions?emissions of carbon dioxide.The most important greenhouse gas released by human activity is carbon dioxide (CO2).Almost 79% of all greenhouse gas emissions caused by human activity in the United States in 2020 were CO2.
Why do USA greenhouse gas emissions tend to be high?Using fossil fuels for transportation, heat, and power is the main cause of human-related greenhouse gas emissions in the United States.The Catalog for U.S. Greenhouse Gas Emissions & Sinks, published by the EPA, keeps track of all U.S. emissions.
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Which of the following is an example of reflexology?
gentle or deep finger pressure on the points to restore the energy balance in the body
light and very slow massage that uses fingertips against the skin in elliptical motions
pressing on points on the hands or feet that correspond to another part of the body
grasping a sore spot in a pincer-like grip with the thumb and forefinger
For instance, reflexology asserts that the bladder correlates to a particular location in the foot's arch.
What are the three types of reflexology?The bladder's ability to operate may be impacted when a reflexologist utilises their thumbs or fingers to provide the proper pressure to this location.Reflexology for the feet. is the stimulation of the foot utilising particular hand and finger techniques for health concerns in other sections of the body.Reflexology of the hands. is the stimulation of the hands used to treat physical ailments in other parts of the body.Reflexology on the ears.It entails applying pressure to various locations on the bottom of the foot. These points are said to correspond to various body parts in traditional Chinese medicine (TCM). They are said to have a variety of advantages, such as lowering stress and supportingFor more information on reflexology kindly visit to
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How does a neuron go from a negative to
positive charge?
A. The spinal cord expands outward, and floods the cell with positive
copper ions.
B. A negatively charged stimulus activates the action potential,
opening sodium channels.
C. The fight or flight instinct is activated and floods the cell with
positive barium ions.
D. The nucleus bonds chemically with another nucleus leaving only
positively charged ions behind.
Answer:
The answer is B, by opening sodium channels.