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Oksanka [162]
3 years ago
5

1.Which of the following comparison statement is true about population growth of more developed countries?

Biology
1 answer:
Sladkaya [172]3 years ago
6 0
Less developed countries have a higher rate of infant and maternal deaths than those of more developed country
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If the person drank a large volume of water, far more than was needed by the body, predict what would happen to glucose, urea, a
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there would be less of these components in urine

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Explain the central dogma of molecular biology. please don't define it or state what it says.
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The central dogma of molecular biology is an explanation of the flow of genetic information within a biological system. it is often stated as "DNA makes RNA, and RNA makes protein", although this is not its original meaning.This states that once "information" has passed into protein it cannot get out again.

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Which of the following statements best describes the major difference between prophase I of meiosis and prophase of mitosis?
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A. In prophase I, tetrads of homologous chromosomes form and crossing over occurs

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What would be the most likely result of a low concentration of sugars and ions in the cell’s vacuole?
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2 years ago
The lac operon can be regulated by two distinct methods. Which of the following statements are correct?The lac operon can be act
Ad libitum [116K]

Answer:

  • The lac operon can be activated by the binding of allolactose to the repressor protein, releasing it from DNA and thereby allowing for transcription to occur.
  • In response to low glucose levels, cAMP is upregulated; the binding of cAMP to the cAMP receptor protein triggers the activation of the operon.

Explanation:

Lactose operon or lac operon  (includes lacZ, lacY and lacA genes) is found in some bacteria and the products of its genes are involved in lactose metabolism. So, this operon is active (genes are transcribed) when lactose is present and glucose is absent (or at low level). The operon is regulated by the lac repressor which acts as a lactose sensor and catabolite activator protein (CAP) which acts as a glucose sensor.

When there is lactose (in the form of allolactose) lac repressor detects it and stops being repressor. This enables transcription.

CAP detects glucose (via cAMP) and activates transcription when glucose levels are low.

5 0
2 years ago
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