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Veseljchak [2.6K]
3 years ago
14

PLEASE HELP I AM IN A MAJOR TIME CRUNCH

Biology
1 answer:
cestrela7 [59]3 years ago
7 0
A vacuole takes up majority of a plant cell when full (it's job is to hold the liquids of the cell and plants require a lot of water to function).
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Three discrete types of muscle fibers are identified on the basis of their size, speed, and endurance. Which of the following at
Tatiana [17]

Answer:

Long relaxing swim.

Explanation:

Muscle is one of the most important tissue of the body that helps in the control and the coordination of the body movements. Three different types of muscle are smooth muscle, cardiac muscle and skeletal muscle.

The red fibers are the slow twitch fibers that contains large amount of stored oxygen in their muscles. These fibers can generate ATP by the fat and the glycogen metabolism. This fiber will help the swimmers to obtain energy at the end of the race to overcome the oxygen deficiency.

Thus, the correct answer is option (C).

5 0
3 years ago
In your own words, describe the base-pairing rules in any DNA molecule.
Elenna [48]
The base pairing rules in any DNA molecule are these:

• Adenine always pairs with Thymine(A-T)

• Cytosine always pairs with Guanine (C-G)
3 0
3 years ago
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Receipt of extracellular signals can change cell behavior quickly (e.g., in seconds or less) or much more slowly (e.g., in hours
balandron [24]

Answer:

A. Molecular changes such as extracellular signals on extracellular ligands can result in quick changes in cell behaviour. One example is insulin. Upon insulin binding on the receptor on the cell membrane, the cell release GLUT4 transporters (for muscle cells) to increase uptake of glucose.

B. Slow changes in cell behaviour can be observed for other lipophilic hormones or intracellular receptors such as glucocoortoid or estrogen which reacts with receptors in the cells.

C. Insulin is required to maintain a constant blood glucose level and hence levels of insulin has to be mediated in correspondence to the blood glucose levels. Fast acting signalling is thus required for homeostasis of blood glucose levels. Where for such lipophilic hormones such as steriods, glucocortoid, these hormones tend to have a longer lasting effect and hence results in a slow change.

6 0
3 years ago
What is the arrangement of the outer planets? What effect does their placement have the planets?
Setler79 [48]
The arrangement of the outer planets is 
1. Mercury 
2. Venus 
3. Earth 
4. Mars
5. Jupiter 
6. Saturn 
7. Uranus 
8. Neptune
8 0
3 years ago
Why is the best definition of directional selection
Anna35 [415]

Answer: Directional selection occurs when individuals with traits on one side of the mean in their population survive better or reproduce more than those on the other. ... Directional selection does the “heavy lifting” of evolution by tending to move the trait mean toward the optimum for the environment.

7 0
3 years ago
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