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Scorpion4ik [409]
2 years ago
14

- Which of the following correctly describes the transport of materials across a cell membrane?

Biology
1 answer:
motikmotik2 years ago
4 0

Answer: passive transport requires chemical energy to move nutrients from areas of low concentration to areas of high concentration

Explanation:

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The ability of one person to produce over a million different antibody molecules does not require over a million different genes
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Answer:

DNA rearrangment.

Explanation:

Genetics can be defined as the scientific study of hereditary in living organisms such as humans, animals and plants.

The human somatic cell is made up of 46 chromosomes which are sub-divided into 22 pairs of autosomes and a pair of sex chromosomes (X and Y). An autosome is one of the numbered chromosome that is typically not a sex chromosome.

On the other hand, sex chromosomes (X and Y) are responsible for determining the gender or sex of living organisms such as humans.

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DNA rearrangment can be defined as a process which typically involves re-writing the informations contained within a Deoxyribonucleic Acid (DNA) into a Ribonucleic Acid (RNA) by enzyme RNA polymerase.

Hence, the ability of an individual to produce over a million different antibody molecules doesn't require the use of over a million different genes; rather, this wide range of antibody production is due to deoxyribonucleic acid (DNA) rearrangment.

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