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antoniya [11.8K]
2 years ago
15

PLZZZ HELP ASAP THANKS :))))

Biology
1 answer:
Tatiana [17]2 years ago
3 0

Answer:

I think it is Physical change

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Which of the following is correct about turnover number (kcat) and the specificity constant for an enzyme?
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Answer:

B

Explanation:

Specificity constant-The ratio of Kcat/Km is called as specificity constant.

 Kcat-Turn over number

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Specifictiy constant is the measure of enzyme efficiency .

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d. cells can neither be created or destroyed

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When a peptide hormone reaches its target cell, which event happens next?
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<span> They are unable to pass through the plasma membrane and have different methods of action. They attach to their receptors in the target cell surface and influence activity within the cell through cytoplasmic intermediates called second messengers. </span>

<span>The two most important messengers are cAMP and inositol triphosphate. </span>

<span>Cyclic AMP: ATP is converted into cAMP after a series of reactions on the plasma membrane following the attachment of the hormone to the membrane. cAMP relays the signal from the membrane to the metabolic machinery of the cytoplasm. </span>

<span>Inositol Triphosphate: Involves the use of Ca+2 that regulates cellular protein activity.
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2 years ago
In a quiz
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Answer:B. is false

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Once RNA polymerase and its related transcription factors are in place, the single-stranded DNA is exposed and ready for transcription. ... Three of the four nitrogenous bases that make up RNA — adenine (A), cytosine (C), and guanine (G) — are also found in DNA.

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