Which of the following statements about protein signals involved in the control of the cell cycle is false?

Question by april: Which of the following statements about protein signals involved in the control of the cell cycle is false?
A) Transition from G1 to S and G2 to M depends on the phosphorylation of certain key proteins by cyclin-dependent kinase or Cdk.
B) Cdk's must be bound with a specific cyclin to be active as kinases.
C) In humans, cyclin D-cdk4 triggers the G1-to-S transition, whereas cyclin B-cdk1 triggers the G2-to-M transition.
D) External control mechanisms involving growth factors and hormones can activate cells that are arrested or are cycling slowly.
E) The phosphorylation of retinoblastoma protein effectively inhibits cell division.


Best answer:

Answer by Carlitos
I don't' know! sorry :(

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Which of the following statements about DNA technology is FALSE?

Question by Joansloan: Which of the following statements about DNA technology is FALSE?
A. DNA technology is now used to mass-produce human insulin.
B. DNA technology is now used to mass-produce human growth hormone.
C. DNA technology is now used to create cells that can identify and kill cancer cells.
D. DNA technology is now used to produce vaccines that are harmless mutants of a pathogen.
E. DNA technology is now used to produce vaccines that use the smallpox virus but replace some of the genes that produce immunity to smallpox with genes that produce immunity to other diseases.


Best answer:

Answer by cdela12345
C - cancer cells are too much like our own =[

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