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Sever21 [200]
3 years ago
11

Explain why the formation of abscission layer causes sugar to accumulate in leaves.

Biology
1 answer:
kramer3 years ago
3 0
Abscission layer is the layer of cutinized parenchyma cells that develops in the abscission zone. The abscission zone form across the base of the plant part, where the break eventually occurs. During the photosyntesis chlorophyll using sunlight produces sugar and storches which are used as food by plant. And sugar accumulate in leaves.   
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Complete the sentences. Each term may be used more than once.
11Alexandr11 [23.1K]

Answer:

The correct answer is -

1. right-handed

2. right-handed

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4. left-handed

5. negative

6. negative

Explanation:

In a circular bacterial chromosome, the structure of DNA is a right-handed double helix In a circular bacterial chromosome.

If DNA is twisted in the right-handed direction, it becomes overwound. Overwinding results in positive supercoiling takes place. If DNA is twisted in the left handd direction, it becomes underwound. Underwinding results in negative supercoiling.

f. One effect  negative supercoiling in bacterial chromosomes is to promote separation of the two strands of DNA in the double helix

8 0
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Answer:

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Explanation:

3 0
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MrRissso [65]
1. C
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4 0
3 years ago
How would the contractile vacuole of a freshwater amoeba respond is the organism was placed in seawater
morpeh [17]

The major function of the contractile vacuole of amoeba is osmoregulation. The solute concentration found in the cell of amoeba's cytoplasm is more than the solute concentration in the freshwater that surround the external part of the organism, thus, water enter the cell through osmosis. The contractile vacuole collect the excess water and expel it through an opening in the cell membrane. By doing this, the contractile vacuole maintains the water balance in amoeba. This how the contractile vacuole normally operate.

In a situation where amoeba is placed in seawater, then water from the cell cytoplasm will rush out of amoeba cell, because of the higher salt content of the surrounding medium. The contractile vacuole will respond to the situation by increasing its contraction and pumping water out the cell in an accelerated manner, this will lead to the shrinking of the cell.

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MatroZZZ [7]

Answer:

There are four students working on a project in math class. Miguel has completed 1/8 of the project, Gina has completed 13% of the project, Jatziry has completed 0.10 of the project, and Keva has completed 1/9 of the project. Make a list of the students in order from least to greatest by the amount of the project they have completed.

Explanation:

I don't have points

3 0
2 years ago
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