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laila [671]
3 years ago
8

Why is it important to the plant that phloem moves both up and down?

Biology
1 answer:
zhuklara [117]3 years ago
8 0
So the entire plant and all of its cells receive water
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How does the thyroid gland help maintain and regulate calcium?
Art [367]

Answer:

When the calcium level is high in the bloodstream, the thyroid gland releases calcitonin. Calcitonin slows down the activity of the osteoclasts found in bone. This decreases blood calcium levels. When calcium levels decrease, this stimulates the parathyroid gland to release parathyroid hormone.

4 0
2 years ago
How would you protect Earth from an asteroid?
Rina8888 [55]

Answer: An object with a high mass close to the Earth could be sent out into a collision course with the asteroid, knocking it off course. When the asteroid is still far from the Earth, a means of deflecting the asteroid is to directly alter its momentum by colliding a spacecraft with the asteroid.

Explanation:

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6 0
3 years ago
Which is the best description of photophosphorylation? he absorption of light energy by chlorophyll the conversion of light ener
ira [324]

Answer:

The conversion of ADP to ATP using light energy

Explanation:

Photophosphorylation is a stage in photosynthesis in which ADP is converted to ATP using sunlight energy.

Note that, in photophosphorylation, 2 ATPs are produced

This process is fundamental in maintaining a stable energy level in our eco-system.

3 0
3 years ago
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Select the best answer for the question.
Leto [7]
C. Anabolic pretty sure this is the one I got right but can’t remember
4 0
3 years ago
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Which of the following statements about transposable genetic elements is NOT true?
Katarina [22]

Answer:

C. They all use a cut and paste mechanism.

Explanation:

DNA transposons can go through a replicative or nonreplicative transposition.

The replicative transposition uses a "copy and paste" mechanism that consists of the introduction of a new copy of the transposable element in a new position, meanwhile <u>the old copy remains in the original position</u>. This determines an increase in the number of copies.

The nonreplicative transposition uses a "cut and paste" mechanism that consists of the cleavage of the transposable element from its position and its <u>insertion in a new position</u> without increasing the number of copies.

Retrotransposons, on the other side, move through RNA intermediates generated by the reverse transcriptase.

5 0
3 years ago
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