Answers
Answer:
The answer is C.
Related Questions
List advantages and disadvantages of using scientific models.
Answers
Answer:
Explanation:
disadvantages:
Models do not behave exactly like the things they represent. Accuracy—In order to make models simplistic enough to communicate ideas some accuracy is lost. For example, ball and stick models of atoms do not show all the details that scientists know about the structure of the atom.
advantages:
When students are engaged in scientific modeling, they are able to notice patterns and develop and revise representations that become useful models to predict and explain--making their own scientific knowledge stronger, helping them to think critically, and helping them know more about the nature of science.
The advantage of a scientific model is it allows complicated processes to be predicted and simplified. A model's drawback is that it could be deceptive and open to numerous interpretations.
What is a scientific model?The advantages are:
Students who participate in scientific modeling are better able to identify patterns and create and revise representations that become useful models to predict and explain, strengthening their own scientific knowledge and fostering critical thinking. They also gain a better understanding of the nature of science.The disadvantages are :
Models don't always act the same as the things they're meant to represent. Accuracy—Some accuracy is lost when models are simplified to the point where they can convey concepts. For instance, the specifics that scientists are aware of regarding the structure of the atom are not depicted in full by ball and stick representations of atoms.Thus, the advantage and disadvantages are written above.
To learn more about the scientific model, refer to the link:
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How does genetic variability allow these lizard populations to survive ?
Answers
30 !!!
Around each electron that orbits an atom's nucleus ______.
A) a magnetic field
B) an electric current
C) a positive charge
D) a negative charge
Answers
Answer:
the answer is D) a negative charge
Answer:
a negative charge
Explanation:
plz can i get brainliest:)
Question:
Using a specific example, discuss the importance of electrons in the transfer of energy in living systems.
Answers
Answer: The transfer of energy in the form of electrons allows the cell to transfer and use energy in an incremental fashion. The principle electron carriers are NAD+ and NADH because they can be easily oxidized and reduced, respectively.
Explanation:
Electrons are very significant in the steps of energy transfer in the living body cells.
When the electrons are displaced from the molecule it gets oxidized which results in a reduction in the potential energy.
Electrons transfer is very important because most of the power is stored in the atoms in the form of electrons that are required for cell functioning.The chief electron transporters are NADH and NAD⁺ they reduce and oxidizes the compounds.NAD⁺ is oxidized and NADH is the reduced form of the molecules.The living structures cannot save a large amount of energy and hence they collect them in the form of ATP and electrons.To learn more about the importance of electrons in living organisms follow the link:
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Scientists build models based on what they know from previous research to derive testable hypotheses. Independently, both Watson and Crick and their competitor Linus Pauling constructed an incorrect triple helix model with the nitrogenous bases arranged so they were on the exterior of the molecule and the phosphate groups on the interior. Although their model was wrong, what assumption made it reasonable to build a model with the bases projecting to the outside
Answers
Answer:
Nitrogenous bases contain the genetic information, their amount is variable among different species, and the arrangement of these bases is also variable among different species
Explanation:
Both Watson-Crick and Pauling's DNA models considered that DNA nitrogenous bases (i.e., Adenine, Cytosine, Thymine and Guanine) contain the genetic information that determines the characteristics of living organisms. Moreover, both DNA models also considered that nitrogenous base composition varies between species, as well as the arrangement of these bases in the DNA chain also varies between species. Based on these features, Linus Pauling considered that a model where nitrogenous bases would be arranged on the outside of the DNA molecule would be easier for the DNA molecule to be replicated, transcribed, or repaired. Although incorrect, Pauling's DNA triple helix model was fundamental to develop the helical (double-stranded) structure of DNA, which was finally discovered by Watson and Crick in 1953.
which term best describes the role of a tick living on another animal?
Answers
Answer:
a) parasite
Explanation:
hopefully this helps
Answer:
A
Explanation:
Parasite, Because a tik living on another animal would be a "vampire" organism otherwise known as a parasite.
which of the following are parts of the biosphere. choose all that apply
river
deer
tree
mountain
mushroom
Answers
1. Which of the following events is not a source of genetic variation in eukaryotic organisms?
J. Mutation
K. Independent assortment
L. Mitosis
M. Fertilisation
2. Which statement best describes the process of endocytosis?
J. A vesicle within a cell fuses with the plasma membrane and releases its contents to the outside
K. Solid particles or liquid are taken up by a cell through invagination of the plasma membrane
L. Investment in one cytosis reduces the ability of the parent to assist another cytosis
M. One region of an embryo directs the development of neighbouring region of an embryo through movement of cells
3. In eukaryotic cells the conversion of ADP and phosphate into ATP occurs (KA1)
J. only in the mitochondria, and requires energy.
K. only in the cytoplasm, and releases energy.
L. in both the mitochondria and the cytoplasm, and requires energy.
M. in both the mitochondria and the cytoplasm, and releases energy.
4. One consequence of having small regulated steps in an energy pathway is (KA1)
J. an increase in the activation energy for the pathway.
K. a decrease in the amount of heat lost from the pathway.
L. a decrease in the amount of ATP released from the pathway.
M. an increase in the total energy released from the pathway.
5. Adult stem cells in bone marrow can differentiate into a variety of cell types e.g brain, skin, lungs, heart, liver and muscle.
Stem cells that are transplanted from a healthy donor into a patient (recipient) will divide and differentiate into cells of like form and function to the surrounding cells.
The adult stem cells from the bone marrow of the donor would be genetically identical to the cells of the
J. recipient, and divide by mitosis.
K. donor, and divide by mitosis.
L. recipient, and divide by meiosis.
M. donor, and divide by meiosis.
Answers
Answer:
1. Mitosis
2. K. Solid particles or liquid are taken up by a cell through invagination of the plasma membrane
3. L. in both the mitochondria and the cytoplasm, and requires energy.
4. J. an increase in the activation energy for the pathway.
5. K. donor, and divide by mitosis.
Explanation:
The sources of genetic variation in a population with sexual reproduction are 1-mutation, which can be defined as genetic changes in the genome of an organism that create new alleles in the population, 2-independent assortment, where pairs of homologous chromosomes are randomly separated, during meiosis, 3-fertilization, where two gametes held together to form the zygote cell (thereby creating new genetic combinations), and 4-recombination or crossing over (i.e., the exchange of genetic material between non-sister chromatids during meiosis). Endocytosis is a cellular process by which substances enter into the cell by invagination of the cell membrane (this term is contrary to exocytosis). In eukaryotic cells, mitochondria are organelles whose membranes produce ATP from ADP and Pi by aerobic respiration (i.e., by the Krebs Cycle and electron transport chain), while glycolysis occurs in the cytoplasm. This process requires the addition of energy (chemical energy in the form of organic compounds). An energy pathway that has many small regulated steps is expected to produce intermediate products and increase its activation energy. Finally, stem cells that derive from a donor and are genetically identical it is expected that divide by mitosis.
The ocean is the largest reservoir of carbon on Earth. Which of the following would most likely store carbon for the longest amount of time?
Calcium carbonate shells of marine organisms, like coral, oysters, and clams
Dissolved CO2 in surface ocean water
Dissolved CO2 in deep ocean water
Carbon stored in the rocks
Answers
Carbon is stored for the longest amount of time as Calcium carbonate shells of marine organisms, like coral, oysters, and clams.
What is the carbon cycle?The carbon cycle is a cycle of how carbon is recycled between the atmosphere and the living and non-living part of the earth.
The carbon reservoir of the ocean forms part of the carbon cycle.
Carbon is stored in the ocean as calcium carbonate shells of marine organisms, like coral, oysters, and clams.
This is the longest time storage form of carbon in the ocean.
Learn more about carbon cycle at: https://brainly.com/question/25845923
What is the difference between traditional PCR and qPCR?
a. Traditional PCR has only 1 cycle whereas qPCR has multiple cycles
b. In traditional PCR, the presence or absences of a DNA sequence is analyzed upon reaction completion whereas qPCR monitors DNA amplification as the reaction progresses
c. Traditional PCR is an outdated technique which is unreliable and has not been utilized for years whereas qPCR is a newer and better technique which is always preferred nowadays.
d. Traditional PCR is monitored by an increases in fluorescence signal whereas it is impossible to monitor qPCR by increases in fluorescence signal
Answers
Answer:
The difference between traditional PCR and qPCR (Real-time PCR) is:
b. In traditional PCR, the presence or absences of a DNA sequence is analyzed upon reaction completion whereas qPCR monitors DNA amplification as the reaction progresses
Explanation:
Real-time PCR (qPCR) is an advanced tool for analyzing RNA and DNA. With Traditional PCR detection occurs at the end-point of the reaction, while with Real-time PCR, detection of the RNA and DNA sequencing is detected as the reaction is occurring. The advantages of the qPCR over the traditional PCR include higher precision and resolution, and increased dynamic range and sensitivity.
Polymerase Chain Reaction (PCR) is a widely-used Biology tool to rapidly replicate millions of copies of a specific DNA sample.
How might a wildfire influence mass wasting? By drying out (removing the water) from the regolith on a slope, wildfires decrease the likelihood of a mass wasting event. A wildfire can dry out the regolith on a slope, making it less cohesive and more likely to travel downward. Wildfires burn only at the bottom of a slope, which oversteepens the slope and induces mass wasting. The ash from the wildfires lands on the slope, adding enough mass to instigate mass wasting. Because plants on a slope bind the regolith with their roots and shield the soil surface from raindrops, a wildfire that destroys these plants would render the soil looser and more susceptible to the erosional forces of rain.
Answers
Answer:
Because plants on a slope bind the regolith with their roots and shield the soil surface from raindrops, a wildfire that destroys these plants would render the soil looser and more susceptible to the erosional forces of rain.
Explanation:
The plants present in a region, protect the soil from being eroded by the impact of rain or wind. This is because the roots of the plants leave the soil more aggregated, block the impact of the wind and allow water to infiltrate. This protection is increased on slopes, where the chances of erosion are greater. However, when a fire occurs and these plants are killed, the roots no longer provide protection to the soil, leaving it drier and looser. This causes the wind to break this soil apart, facilitating erosion. In addition, rainwater has difficulties in infiltrating the soil and ends up draining, taking parts of the soil with it and causing erosion.
What happens if the mass of the elements is greater compared to smaller ?
Answers
Hello. More information is needed to answer your question accurately. However, I will try to help you in the best possible way
If you are referring to what happens if the mass of an atom is greater compared to an atomic number, we can say that there is nothing too much, since it is normal for the atoms to have a mass slightly greater than the atomic number. The mass of an atom can never be less than the number of protons added to the number of neutrons. An atom with greater mass has a greater number of electrons and neutrons in relation to an atom of less mass and it is likely that the atom of less mass will donate or share electron with the atom of greater mass so that both reach the electric balance.
Any mutation that affects just one base is called a -?- mutation.
Answers
Answer: A point mutation is when a single base pair is altered. Point mutations can have one of three effects. First, the base substitution can be a silent mutation where the altered codon corresponds to the same amino acid.
Explanation:
All of the following are complications that can result from an individual suffering from an eating disorder except
A heart disease
B. dieting regularly
C. kidney damage
D. death
Answers
Answer:
The answer is B
Explanation:
Hope this helps
Answer:
B. dieting regulraly
Explanation: correct on edge 2021
just got it right ; )
"What do the four genotypes inside the 4 boxes of a Punnett Square represent?
Answers
Answer:
They represent the percent chance to inherit a type of genotype. Recessive alleles, dominant alleles, heterozygous have chances to appear based off the parent alleles.
2. Name one positive benefit of having vertebrae for Chordates
Answers
Sexual reproduction results in offspring that are *blank*
from both parents?
A. different
B. same
C. opposite
D. none of these
Answers
Answer:
I would put unique but since that's not a choice, probably different
Explanation:
Answer:
A. Different
Explanation:
In sexual reproduction, the offspring inherits traits from both parents. They are not an exact copy of either but have traits from both. Hope it helps :)
Why do vestigial structures support evolution?
Answers
Answer:
Vestigial structures
Explanation:
support evolution, by suggesting us that the organism changed from using structure to not using structure or using it for another purpose.
6.
Perform transcription by using the following piece of DNA.
Introns are underlined. Write the final strand of mRNA created.
TACCGIA CA ATG G GATC CouTube
Answers
Answer:
A-T-G-G-T G-T T-A-C C C-T-A-G
Explanation:
TACCGIA CA ATG G GATC
A-T-G-G-T G-T T-A-C C C-T-A-G
The "I" in the first few letters shouldn't probably be there since there are only 4 bases: A, T, C, and G.
Plzzzzz help me. How does the number of eggs in one flower compare to the number of pollen grains in one anther?
Answers
Which type of macromolecules helps a cell brake down food? Lipids proteins carbonhydrates or nucliec acids
Answers
Answer:
The correct answer is - proteins.
Explanation:
All the food particles are broken down by specific protein molecules called enzymes. Carbohydrates are the macromolecules that are broken down by enzymes; amylase, lactase, sucrase, or maltase.
Proteins are macromolecules that are broken down with the help of the enzymes peptidase, pepsin. Lipids macromolecules are also broken down by lipase enzymes. Breakdown of these macromolecules provides energy for cellular activities.
Two hawk species are present in the same ecosystem. Hawk A feeds on mice and squirrels, both of which feed on seeds and nuts. The small population of Hawk species B eats snakes that feed on mice and squirrels. Which describes why Hawk B is the keystone species in this scenario?
Answers
Answer:
Hawk B species help other populations survive by keeping snake predation low.Complete question and Explanation:
Due to technical problems, you will find the complete question and the explanation in the attached files.
Consider a population that contains black and white cats where the black allele (B) is dominant and the white allele (b) is recessive. Indicate whether each statement is true or false.
1. Evolution is occurring in a population of cats where the genotype frequencies of BB, Bb, and bb are 0.64, 0.32, and 0.04, respectively.
2. A population of cats is in Hardy-Weinberg equilibrium when the genotype frequencies of BB, Bb, bb are 0.49, 0.33, and 0.16, respectively.
3. Evolution is occurring in a population of cats where the genotype frequencies of BB and Bb are 0.7 and 0.2, respectively. _____
4. A population of cats is in Hardy-Weinberg equilibrium when the genotype frequencies of BB and Bb are 0.25 and 0.5, respectively. _____
Answers
Answer:
what is this what subject
C cytosine need help with this problem
Answers
cytosine
Answer:
Explanation:
Which phase occurs immediately after a full moon?
waxing gibbous
waning crescent
waning gibbous
waxing crescent
Answers
youre welcome
describe how the mammalian heart is adapted to it's function
Answers
Answer:
The ventricles are thick walled; to pump blood to the lungs and the rest of the body. The left ventricle has thicker wall to create more pressure because it pumps blood for longer distances round the body; while the right ventricle pumps blood to the lungs close to the heart.
#SaveTheTrees
We can do this
Answers
Answer:
#SaveTheTrees
Answer:
Donate or plant a tree!
Explanation:
https://teamtrees.org/
https://www.greenamerica.org/save-trees
6. Hawks have eyes that alow them to see prey from very far away. Which of the following
terms best describes this trait?
A vestigial organ
B. adaptation
Coverproduction
D artificial selection
Answers
describe the mass and charge of particles you find in the nucleus and in the electron cloud.
Answers
Proton is the positively charged particle with a charge equivalent to 1.6×10−19C .
Neutron is a neutral charged particle i.e. zero charge.
Electrons are negatively charged particle with a charge equivalent to −1.6×10−19C .
Protons and Neutrons are inside the nucleus of an atom and contribute to the most of the mass of the atom. Electrons are revolving around the positively charged nucleus in quantized energy shells.
100 POINTS! AND GIVE EXPLANATION!
a student made this model of carbon dioxide moleclue. it has one carbon atom and two oxygen atoms what is the correct way to write carbon dioxide the chemical name for
A: C2O
B: C²O
C: CO2
D: CO²
Answers
Answer:
CO₂
Explanation:
In chemistry we use subscripts after the element represented by that amount.
Answer:
C: CO2
Explanation:
Carbon has four valence electrons. Oxygen needs two valence electrons to become stable. A carbon dioxide molecule is a combination of one carbon atom and two oxygen atoms, CO2. Because carbon dioxide includes two different elements, it is a compound as well as a molecule.
Hope this helped!!!