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zhannawk [14.2K]
2 years ago
7

A factor that does not change in an experiment is the

Biology
1 answer:
Vinil7 [7]2 years ago
6 0
A, because it the constant variable
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Which of these organelles is absent in a prokaryotic cell? ribosome nuclear membrane plasma membrane
aleksley [76]
<span> Some of the important features of a prokaryotic cell is that it contains a plasma membrane, ribosomes, and genetic material (DNA) that is not bound by a membrane. Therefore, prokaryotic cells lack a nuclear membrane. </span>
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3 years ago
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Suggest two reasons why more of our fish are supplied by fish farming rather than from traditional
Arlecino [84]

Answer:

Due suitable environment and high productivity.

Explanation:

More fish are supplied by fish farming rather than from traditional because farms are build in order to harvest more fish by providing suitable environment to the fish. In transitional ways, fish are caught in nets from the rivers by local people for theirselves and the extra will sold in the market. In rivers there are less number of fish which does not meet the requirements of people so that's why commercial farming of fish can be done.

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3 years ago
Some genes are important enough to be called "molecular switch" or "master" genes. What is the purpose of these genes?
trapecia [35]

Answer:

Genes called "molecular switch" or master genes have the purpose of control when other genes are expressed (option A).

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The name of molecular switch is synonymous with the master gene, since its activation determines the genetic regulation necessary to establish cell differentiation and even the determination of the sex of some species.

The other options are not correct because:

<em>     B. Master genes do not </em><u><em>determine the organization of the genome</em></u><em> .</em>

<em>     C. </em><u><em>Regulation of cell metabolism</em></u><em> depends of substances as hormones and enzymes. </em>

<em>     D. </em><u><em>The rate of translation</em></u><em> does not depend on the activity of master genes.</em>

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2 years ago
How do Eukaryotic and Prokaryotic cells use cell structures to perform a specific function within an organelle?
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A kilogram of cotton and a kilogram of lead have the same (A) density (B) volume (C) weight (D) all of these
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The answer is weight (C)
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