Answer:
hand lens is used to make small object to appear larger hence visibility is easily attained
Plss help!! ASAP I will give u brainlist
Answer:
Sedimentary
Explanation:
A certain mutation in the gene for hemoglobin results in the red blood cells becoming sticky,
rigid, and irregularly shaped. These irregularly shaped red blood cells block the flow of blood
throughout the body. A single base mutation is responsible for these irregularly shaped blood cells.
Which of these mutations most likely results in the mutated hemoglobin gene?
F. Insertion
G. Deletion
H. Duplication
J. Substitution
Answer:J
Explanation:Substitution
Mutation in genes can result in different types of abnormalities. In gene related to hemoglobin makes RBCs sticky, irregular shaped, this is because of substitution.
What is substitution?Mutation is a type of replication error during formation of new DNA.
In substitution mutation, incorrect nucleotide is placed at incorrect position during DNA replication, a point mutation occur in which a single nucleotide is substituted.
It actually does not add or remove any nucleotide from the sequence, just it substitute it.
In gene related to hemoglobin, the amino acid glutamic acid gets replaced with the valine amino acid at position 6 in beta-globin, which results in sticky, irregularly shaped red blood cells.
Thus the correct option is J.
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Humans have 46 chromosomes in each of their body cells. Jason has a small cut on his right arm and his body cells are undergoing mitosis to repair the damage. How many chromosomes will be in each new body cell after cell division?
Answer:
23
Explanation:
Use the following dichotomous key to identify an irregular blue flower with five petals and a fruit that is a ripened flower ovary or follicle. Dichotomous Key of Ranunculaceae #1. a. Fruit is a group of alkenes. (go to step 2) b. Fruit is a group of follicles. (go to step 4) #2. a. Petals are not present. (go to step 3) b. Petals are present. (Ranunculus) #3. a. The flower has 4 sepals. (Clematis) b. The flower has 5 sepals. (Anemone) #4. a. The flowers are regular. (Aquilegia) b. The flowers are irregular. (Delphinium) The flower is a: A. Anemone B. Clematis C. Delphinium D. Ranunculus
Question:
Use the following dichotomous key to identify an irregular blue flower with five petals and a fruit that is a ripened flower ovary or follicle.
Dichotomous Key of Ranunculaceae
#1.
a. Fruit is a group of alkenes.............................. go to step 2
b. Fruit is a group of follicles..............................go to step 4
#2.
a. Petals are not present.....................................go to step 3
b. Petals are present............................................Ranunculus
#3.
a. The flower has 4 sepals.................................. Clematis
b. The flower has 5 sepals................................... Anemone
#4.
a. The flowers are regular..................................... Aquilegia
b. The flowers are irregular................................... Delphinium
The flower is a: A. Anemone B. Clematis C. Delphinium D. Ranunculus
Answer:
The species belongs to Delphinium genera.
Explanation:
A dichotomous key is relatively simple to interpret. All you need to do is to:
- carefully observe your organism,
- know some technical terms or have a biological dictionary, and
- follow the descriptions.
The dichotomous key is going to lead you to the answer.
In the example, we have a plant species with irregular blue flowers and five petals. The fruits are a ripened flower ovary or follicles.
Irregular flower: Term that refers to asymmetrical flowers that only have one plane. Follicle: Term that refers to dry dehiscent fruits originated from a flower with only one carpel. When mature, they open by the ventral suture.So, let us begin, step by step. For each number, we are going to have two options (a and b). By knowing our organism, we need to decide which one is correct and follow indications.
#1.
a. Fruit is a group of alkenes.............................. go to step 2.
b. Fruit is a group of follicles..............................go to step 4.
We know that our fruit is a follicle. Option a is not correct (it is not a group of alkenes). Option b is the correct one. Knowing this, we must go to step four. ***Note: In the hypothetical case that the fruits were a group of alkenes, and option a was correct, we should go to step two, as indicated***.
#4.
a. The flowers are regular..................................... Aquilegia
b. The flowers are irregular................................... Delphinium
We know that our flower is an irregular one. So the correct option is b. This option leads us to Delphinium genera. Our species belongs to this taxonomic group. ***Note: In the hypothetical case that the fruit was actually a regular flower, and option a was correct, our species would belong to Aquilegia genera***
Which one the following is the most stable?
Answer:
plz tell which is your following
Give two examples of pioneer species.
Answer:
Two examples of pioneer species are lichens and bacteria
Explanation:
helps it helps
have a great day
Write a paragraph explaining the steps involved in a muscle contraction starting from the brain sending a signal to the muscle and ending with the muscle contraction.
Answer:
A Muscle Contraction Is Triggered When an Action Potential Travels Along the Nerves to the Muscles.Muscle contraction begins when the nervous system generates a signal. The signal, an impulse called an action potential, travels through a type of nerve cell called a motor neuron. The neuromuscular junction is the name of the place where the motor neuron reaches a muscle cell. Skeletal muscle tissue is composed of cells called muscle fibers. When the nervous system signal reaches the neuromuscular junction a chemical message is released by the motor neuron. The chemical message, a neurotransmitter called acetylcholine, binds to receptors on the outside of the muscle fiber. That starts a chemical reaction within the muscle.Acetylcholine Is Released and Binds to Receptors on the Muscle Membrane.
A multistep molecular process within the muscle fiber begins when acetylcholine binds to receptors on the muscle fiber membrane. The proteins inside muscle fibers are organized into long chains that can interact with each other, reorganizing to shorten and relax. When acetylcholine reaches receptors on the membranes of muscle fibers, membrane channels open and the process that contracts a relaxed muscle fibers begins:
Open channels allow an influx of sodium ions into the cytoplasm of the muscle fiber.
The sodium influx also sends a message within the muscle fiber to trigger the release of stored calcium ions.
The calcium ions diffuse into the muscle fiber.
The relationship between the chains of proteins within the muscle cells changes, leading to the contraction.
Explanation:
Sry I don’t know how to explain It’s a lot.
What’s the answer to this I didn’t mean to click this btw
In some carnations, red is co-dominant with white. What might the heterozygote look like?
1. Pink
2. Red with White speckles
3. Red
4. White
Answer: Red
Explanation:
Sorry if I'm wrong
what are density dependent limiting factors? provide examples and describe how they affect a population.
Answer:
china world was large puplation of ther country and dencity was multiple
Answer:
Density-dependent factors include disease, competition, and predation. Density-dependant factors can have either a positive or a negative correlation to population size. With a positive relationship, these limiting factors increase with the size of the population and limit growth as population size increases.
Bacteria can reproduce by exchanging DNA. This exchange is called:
Binary Fission
Conjugation
Endospore production
Sexual reproduction
Answer:
conjugation
Explanation:
Bacteria reproduce by binary fission, resulting in two daughter cells identical to the parent cell. Bacteria can exchange DNA through the processes of conjugation, transformation, or transduction.
How can you use what you have learned in Biology to help yourself, family and the planet?
Answer: I’m not sure what you’ve learned but for me it’s that you shouldnt leave the lights on when you don’t need them, you should switch off the TV when you aren’t using it, if you see a piece of trash pick it up and throw it in a trash can, and recycle
Explanation: HAPPY (late) EARTH DAY!!
PLEASE HELP 20 POINTS RIGHT ANSWERS ONLY
A scientist is studying three different plant species that appear to be closely related. All three are found in a wide variety of environments and are very similar in appearance. Which of the following would provide the best evidence regarding the evolutionary relationship of these three species?
Comparing the different climates in which the species can be found
Comparing the genomes of each species to see which are most similar
Determining whether the plants are capable of both sexual and asexual reproduction
Determining which types of animals eat each species
Determining the genomes of each species to see which is similar will provide the best evidence regarding the evolutionary relationship of these species. So the correct option is B.
What are evolutionary relationships?The relationships of different species with each other based on their history of evolution are called evolutionary relationships.
The study of the relationships between organisms by categorizing them into various kinds of groups is called systematics.
All the species of organisms, from bacteria to mammals have evolved from some kind of ancestral species by the process of evolution.
Determination of these evolutionary relationships is the key to understanding the process of evolution. Evolutionary relationships are determined by using evolutionary trees which are diagrammatic representations of ancestral species and their descendants.
The study of genomics to identify the similarity between organisms is yet another useful tool to determine the relationship between them.
Therefore the correct option is B.
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a rocket is fired straight upward from ground level with an initial velocity of 480Km)hr. After t second , its distance above the ground level is given by 480t-16t^2. For what time interval is the rocket more than 3200Km above ground level?
Answer:
answer
Explanation:
The rocket is 19.5 m above the ground when h=19h=19:
h19.50tttamp;=−8t2+32tamp;=−8t2+32tamp;=−8t2+32t−19.5amp;=−32±322−4(−8)(−19.5)−−−−−−−−−−−−−−−−√2(−8)amp;=−32±1024−624−−−−−−−−−√−16amp;=−32±400−−−√−16amp;=−32±20−16amp;=−32+20−16=0.75amp;=−32−20−16=3.25amp;amp;amp;amp;amp;amp;amp;amp;Substitute h=19.amp;Subtract 19.5 on both sides.amp;Solve for t using the Quadratic Formula.amp;Simplify.amp;Subtract.amp;Evaluate the root.amp;Find the two solutions.
h
19.5
0
t
t
t
amp;=−8t
2
+32t
amp;=−8t
2
+32t
amp;=−8t
2
+32t−19.5
amp;=
2(−8)
−32±
32
2
−4(−8)(−19.5)
amp;=
−16
−32±
1024−624
amp;=
−16
−32±
400
amp;=
−16
−32±20
amp;=
−16
−32+20
=0.75
amp;=
−16
−32−20
=3.25
amp;
amp;
amp;
amp;
amp;
amp;
amp;
amp;Substitute h=19.
amp;Subtract 19.5 on both sides.
amp;Solve for t using the Quadratic Formula.
amp;Simplify.
amp;Subtract.
amp;Evaluate the root.
amp;Find the two solutions.
The rocket will then be at least 19.5 m above the ground for the interval 0.75≤t≤3.25
0.75≤t≤3.25
The time interval for which the rocket is more than 3200 km above the ground level is 61.25 seconds.
What is quadratic equation?To solve this problem, we need to find the time interval for which the rocket's distance above the ground level is greater than 3200 km.
We can start by setting the equation for the rocket's distance above the ground level equal to 3200:
We can then solve this equation for t using the quadratic formula
[tex]480t - 16t^2 = 3200\\t = (-480 +/- sqrt(480^2 - 4*(-16)*3200)) / (-32)\\This simplifies to:\\t = (-480 +/- sqrt(480^2 + 256000)) /\\ (-32)t = (-480 +/- sqrt(2304000)) /\\ (-32)t = (-480 +/- 1500) / (-32)t = (-1980) /\\(-32)t = 61.25t = -24.25\pi[/tex]
Since the time interval we are looking for is positive, we can ignore the negative solution. The time interval for which the rocket is more than 3200 km above the ground level is therefore 61.25 seconds.
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Which term refers to a significant but short in duration physical change or event within an ecosystem
A. deforestation
B. succession
C. climax
D. disturbance
What is a cell? Why is it called the basic unit of life?
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What is a cell? Why is it called the basic unit of life?
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Cells are the basic unit of life, all living organisms are made up of cells, which means cells make up humans, plants and animals. Nonliving things on the other hand are composed of chemical elements and compounds.
Note: My answer is based on my understanding of your question.
Hopefully Help:)
#CarryOnLearning#NoToPlagirismCurrent wind, solar, nuclear and hydroelectric energy technologies
А
emit carbon dioxide
B
are able to deliver all the energy we need
с
don't have the efficiency and scale we need
D
burn a lot of fossil fuels
Pollination occurs when pollen lands on the -
A. style
B. anther
C. stigma
D. filament
E. ovary
Answer:
C. stigma
Explanation:
"stigma"
Fertilization in flowering plants happens through a process called pollination. Pollination occurs when pollen grains from the anther land on a stigma. After pollen grains land on the stigma, a pollen tube grows from the pollen grain, through the style, and into the ovary.
- The situation in which atmospheric gases trap the sun's heat and keep Earth's
surface warm is called
a. weather.
c. climate.
b. greenhouse effect.
d. primary succession.
Answer:
b. greenhouse effect.
Explanation:
How many copies of each chromosome do you have?
Answer:
2
Explanation:
Answer is 2....znskskskskskndk
Answer:
We all have two copies of every chromosome (except males who have one X and one Y plus 22 other pairs). Mom and dad give us copies of half their DNA -- one of each chromosome. At the end, we all have two copies of each of our chromosomes just like mom and dad
please help!!!!!!!!!!!!!!!!!!!!!!!
Answer:
Sturgeon and blue crabs
Answer:
Sturgeon and blue crabs
Work is done when you
A .you lift a book
B .you stand on the floor
C .you hold a box
D .you push against a wall
How does random fertilization add to the genetic variation?
A man with heart disease lives in a family that eats a lot of red meat. Wha
to his environment?
O Analyze the patient's family history regarding heart disease
O Analyze the patient's diet to quantify cholesterol intake
O Determine the exact amount of cholesterol in the patient's blood
O Determine if the cholesterol will lead to high blood pressure
Answer:
Analyze the patient's diet to quantify cholesterol intake
Explanation:
This is because since the patient family consumed more of red meat, it should be analysed. Because researches find out that red meat either processed or unprocessed contain more protein than fish, milk, and it can raise cholesterol levels. Red meat contain high cholesterol and increaee in cholesterol levels can lead to coronary heart diseases.
Answer:
B
Explanation:
How does temperature affect rocks?
Temperature can cause rocks to expand or contract.
Temperature can change the texture of a rock.
Temperature can relocate rocks.
Temperature changes rock composition.
Answer:
temperature can cause rocks to expand and contract
2. TRUE OR FALSE: Most members of a species show differences, or
variations.
O true
O False
Answer:
True.
Explanation:
There is a thing called bio-diversity, which means that even though siblings might be the same gender, they won't look exactly the same. Same with animals. Some animals might be bigger, faster, stronger, or smarter than others from the same species.
What is the water table?
Answer:
C: The top of a saturated aquifer
Explanation:
The water table is the upper surface of the zone of saturation. This zone of saturation is where pores and fractures of the ground get saturated with water. It can also be simply explained as, the upper level, below which the ground is saturated.
suppose that the local temperate changed in favor of greater oxygen levels in the water. write a short paragraph to describe how both the population of the small fish species and the wading bird population would change in response to the new oxygen lovers over the next six months. then explain why these changes occur
Explanation:
suppose that the local temperate changed in favor of greater oxygen levels in the water. write a short paragraph to describe how both the population of the small fish species and the wading bird population would change in response to the new oxygen lovers over the next six months. then explain why these changes occur
what ways do we use patterns of classification in science? give examples
Answer:
Classification is the way scientists use to categorize and organize all of life. It can help to distinguish how similar or different living organisms are to each other
Explanation:
Patterns are used in science to classify objects or phenomena into groups. There are patterns of both similarity and difference.
What is classification?Classification is the way scientists use to group and categorize objects, phenomenon or life forms. It can help to distinguish how similar or different living organisms are to each other based upon the pattern of their structure and organization.
Patterns are regular and intelligible forms , sequences, or structure that found throughout nature. Scientific questions may be generated when scientists observe a pattern of events or when something does not match an established pattern.
For example, the frozen water in an iceberg is arranged into a regular, repeating crystal structure—a pattern of similarity. Young children can observe a common pattern of difference, the differences between adult animals and their offspring.
Thus, it is clear from above explanation, the ways to use patterns of classification in science.
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please describe the climate of spruce pond in southeast new york
Answer:
It then describes the basic physical elements of the system as it exists today, together with the biophysical geography of the Catskill/Delaware headwaters from which 90 percent of the City's water is derived. This chapter