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Kaplan Qbank USMLE



Author3 Posts
  #1

The majority of cellular proteins and RNA are synthesized throughout the cell cycle and are only interrupted briefly during M phase. Synthesis of which of the following proteins occurs predominantly in S phase of the cell cycle?

A. Cyclins

B. DNases

C. Histones

D. RNA polymerases

E. snRNPs (small nuclear ribonucleoproteins)

F. Tubulins


Explain, otherwise abstent to answer.

  #2

C...

  #3

C-
G1- synthesis of proteins, RNA, lipids, carbohydrates
S- synthesis of DNA, histone + DNA replication
G2- ATP synthesis, repair DNA, protein synthesis







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