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natulia [17]
3 years ago
12

The two sides of the DNA helix are held together by

Biology
2 answers:
nirvana33 [79]3 years ago
8 0

Answer:

The two sides of the DNA helix are held together by

Sergeeva-Olga [200]3 years ago
6 0
Hydrogen bonds I believe is the right answer
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certain substances are placed in the beaker in given picture if the following items are placed in a water filled beaker then sta
Yuliya22 [10]

Answer:

1. gravel of the sand: a part is dissolved and the remainder is grouped at the bottom of the beaker.

2. drop of sunflower oil: It is not absorbed and heaps on the surface of the water contained in the beaker.

Explanation:

Gravel of the sand is a polar substance. This means that this substance has the ability to dissolve and mix with water in a system in which both were placed together, such as a beaker, for example. However, the beaker limits the amount of water, which limits its ability to dissolve polar substances. Therefore, depending on the quantity, the gravel of the sand, when placed in a beaker with water, will dissolve, in parts, what is not dissolved will accumulate in the bottom of the beacker, because the gravel of the sand is denser than the water.

With the drop of sunflower oil the exact opposite happens. This is because drops of oil are nonpolar substances, which means that they do not have the ability to be dissolved in water. This means that when dropped into the beaker with water, the drop of sunflower oil will not dissolve, but will pile up on the water surface, because it is less dense than water.

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3 years ago
What type of bonds connect the sugars to phosphates and the sugars to bases? Weak or strong?
Alexxx [7]

Answer-

All the bonds are hydrogen bonds  and this bond is strong

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3 years ago
Why is the cycling of nitrogen, water, and carbon so important for life?
dimulka [17.4K]

Because all living things are made of carbon in one way or another and we use nitrogen and water naturally.

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The muscles of a recently deceased human can remain in a contracted state, termed rigor mortis, for several hours. What prevents
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when the cells can't pump out the calcium out, it concentrates in the muscles forcing muscles to constrict and lastly waste away when the muscle proteins decompose

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2 years ago
How do biological clocks use feedback and feed forward inhibition to control sleep wake cycle
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We do a little more about how much you want to be the first to know that the government is not cycled rest he's sleep woe
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