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Free CLEP Science and Mathematics Exam Braindumps (page: 54)

Page 53 of 128
PDF with 494 Questions

Proteins are synthesized on:

  1. mitochondria
  2. ribosomes
  3. centrioles
  4. RNA
  5. the plasma membrane

Answer(s): B

Explanation:

Proteins are made on ribosomes.



Chromatin consists of:

  1. DNA and proteins
  2. RNA and proteins
  3. RNA and enzymes
  4. DNA and RNA
  5. DNA only

Answer(s): A

Explanation:

Chromosomes are made up of chromatin, a complex structure of DNA and associated proteins (histones).



The first step in cell division is:

  1. division of the cytoplasm
  2. alignment of the centrioles
  3. duplication of the chromosomes
  4. formation of mitotic spindles
  5. dissolution of the nuclear membrane

Answer(s): C

Explanation:

The genetic material is duplicated in the first step of mitosis.



An animal cell contains M chromosomes. After mitotic cell division, each daughter cell contains ________ chromosomes.

  1. 2M
  2. M/2
  3. M
  4. 3M
  5. 4M

Answer(s): C

Explanation:

In mitosis, a cell divides to produce two identical cells with exact copies of the original genetic material. If the parent cell contains M chromosomes, then after mitosis the two daughter cells each contain exactly M chromosomes.






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