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sesenic [268]
3 years ago
11

The function of the sinoatrial node is to

Biology
1 answer:
stepladder [879]3 years ago
4 0
C . sinoatrial node the system that controls the heart rate . i hope it helps xD
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bulgar [2K]

Answer:

The energy that these molecules carry is stored in a bond that holds a single atom to the molecule. For ATP, it is a phosphate atom, and for NADPH, it is a hydrogen atom.

These electrons are used to produce NADPH as well as ATP in a series of reactions called the light reactions because they require light. NADPH and ATP formed by the action of light then reduce carbon dioxide and convert it into 3-phosphoglycerate by a series of reactions called the Calvin cycle or the dark reactions.

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Which area of the graph shows the activation energy required if an enzyme was not present
boyakko [2]

B

Area B of the graph shows the activation energy required if an enzyme was not present

Explanation:

Reactions with high activation energy cannot occur spontaneously. Enzymes are responsible for lowering this activation energy and enabling reactions to occur at a faster pace than natural. An example is carbonic anhydrase enzyme that enables increased rates of carbon dioxide dissolving in and out of blood plasma.

Enzymes distort the bond of reactants such that they become unstable ( this raises the reactants Gibbs free energy). The bonds therefore break and rearrange to form the products of lower and stable energy states.

Learn More:

For more on activation energy check out;

brainly.com/question/10507976

brainly.com/question/5280701

#LearnWithBrainly

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True

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