Describes hydrogen bonding in DNA?

1 answer:

8 0

Answer: Hydrogen bonds are created between the base pairs in DNA. Adenine pairs with thymine and cytosine pairs with guanine. Adenine and thymine create 2 hydrogen bonds while cytosine and guanine create 3. These bonds are fairly weak so that they can be broken when DNA is replicated (by an enzyme called helicase which unwinds DNA). However despite them being weak they do stabilize DNA's double helix structure as well.

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4. The light-independent reaction uses the energy from _________ to produce _________.

luda_lava [24]

Answer:

The light- independent reaction uses the energy from NADPH and ATP to produce Sugar.

Explanation:

The end product of light- independent reaction is sugar (glucose) which is made from carbon dioxide. The energy for these comes from the end results of light- dependent reactions .

This includes NADPH and ATP. This process is termed as the Calvin Cycle.

Steps of the Calvin Cycle include:

1. The formationof a six carbon sugar , Phosphoglycerate, by combination of a five carbon sugar, Ribulose biphosphate (RuBP) and Carbon dioxide.

2. The formation of two molecules of Triose Phosphate by reducing Phosphoglycerate using hydrogen atoms of the light- dependent reactions. This reaction uses ATP.

3. ATP is also used to convert some of the Triose Phosphate back to RuBP.

4. GLUCOSE is produced using the rest Triose Phosphate.

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3 years ago

List any ten environmental issues of Nepal and write short Introduction about them

navik [9.2K]

Answer:

Major issue

Air pollution. The death rate from both indoor and outdoor air pollutants was 133.3 per 100,000 populations(2017) which is the second-highest death rate after due to Cardiovascular diseases in Nepal. ...

Unsafe water. ...

Unsafe hygiene. ...

Water and air pollution. ...

Deforestation. ...

Overpopulation.

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3 years ago

A patient who has had two recent seizures underwent a 3-hour eeg study. what cpt® code is reported?

allochka39001 [22]

The Current Procedural Terminology code would be 95813. This code would be used when a person has a routine EEG procedure performed as a way of checking the mechanisms behind the epilepsy. The code 95813 also shows that the test lasted for longer than one hour, in this case three.

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4 years ago

Geothermal energy uses _________ from the Earth's core to produce energy.

sdas [7]

I think is heat but I’m not sure

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3 years ago

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If you are looking at a cell undergoing mitosis using a microscope, how can you tell if it is an animal cell or a plant cell? ch

Temka [501]

Answer:

Animal cells form a cell plate whereas plant cells do not

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3 years ago