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motikmotik
3 years ago
9

What is the conclusion after investigating whether roots exert a pushing force strong enough to cause water to move up the stems

of plants
Biology
1 answer:
vovikov84 [41]3 years ago
6 0
From the root pressure experiment, it may be conclude that water molecules move through xylem due to root pressure and not transpiration. The process of osmosis and diffusion helps water to pass from soil to root hair tips and finally to the xylem. Root pressure then joins the water lines inside the xylem and prevent the formation of air bubbles. This also helps in moving the water up. Root pressure is tranverse osmotic in nature and causes guttation at night.
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Answer:

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If the sequence of one strand on DNA is CTA GCT CCA, what is the<br> complementary strand? *
vekshin1

Answer:

If the sequence of one strand on DNA is CTA GCT CCA,  the complementary strand is GAT CGA GGT.

Explanation:

The DNA molecule has four nitrogenous bases in its structure, two purines —adenine and guanine— and two pyrimidines, cytosine and thymine.

The two DNA strands are linked by hydrogen bonds established between their complementary nitrogenous bases, where a purine is complemented by a pyrimidine.

In the case of DNA, adenine is complemented by thymine and cytosine is complemented by guanine:

<em>A=T</em>

<em>C≡G</em>

In the sequence belonging to a DNA strand CTA GCT CCA, the strand that is complementary would be GAT CGA GGT.

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