1.

The human cell nucleus A. Has a membrane which is permeable to nucleic acid. B. In somatic cells contains 44 chromosomes. C. Stores its genetic material in the nucleolus. D. Has a skeleton of fine filaments. E. Is essential for cell division.

Answer»

A. True Messenger RNA crosses the nuclear membrane. 

B. False The total is 46; i.e. 44 + XX or XY. 

C. False The nucleolus is a condensation of RNA; the genetic material is in chromosomes. 

D. True These are attached to the nuclear membrane. 

E. True For example, red blood cells cannot divide.



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