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Anna11 [10]
3 years ago
14

Compare and contrast the specific functions of hydrogen bonds in DNA molecules, and the hydrogen bonds in H2O molecules.

Biology
1 answer:
zzz [600]3 years ago
7 0

Answer:

A hydrogen bond is a weak bond formed by the electrostatic attraction that takes place between proton of one molecule and an electronegative atom of another molecule. It can be of two types intra-molecular and inter-molecular.

In water, hydrogen bonds give characteristic properties such as cohesion, high specific heat, high heat of vaporization, a lower density of ice, and solubility.

In DNA, the hydrogen bonds only provide stability to the overall molecule. The two strands of the DNA stay together or remain attached with the help of hydrogen bonds.

The nucleotide base pairs are joined together through hydrogen bonding. The adenine and thymine are joined together with the help of two hydrogen bonds. The cytosine and guanine are joined together with the help of three hydrogen bonds.

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Which is true of the light reaction of photosynthesis?
krek1111 [17]

Answer:

Answer: The correct option is C) It produces ATP.

Photosynthesis is the process by which green plants prepare their own food using CO₂ and H₂O in the presence of sunlight. It is primarily divided into light reaction and dark reaction.

The light reaction takes place in the thylakoid membranes of the chloroplast. In this reaction, energy from sunlight is captured by the chlorophyll pigment via a series of chemical reactions. This results in the formation of two high energy chemical compounds, which are ATP and NADPH.

These compounds are further used in the dark reaction for the synthesis of food ( which is glucose).

Thus, it produces ATP is true for the light reaction of photosynthesis.

3 0
3 years ago
Which two properties of water are what make it sticky, or wet?
yulyashka [42]

Answer:

D: adhesion and cohesion

Explanation:

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7 0
3 years ago
If a paper clip floats on water, what would happen to it if you if you drop soap near it?
Mars2501 [29]

Nothing really big... It floats because of density not surface tension.

But You can try and discover what will happen.  :)

(   P.S if you'll drop soapstone it will probably create nice waves...  )


4 0
3 years ago
An organism of the kingdom Protista could be _______.
ivann1987 [24]
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aliina [53]
False
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