Arrest at a cell cycle checkpoint can occur via which of the following actions?
A、stabilization of cyclin.
B、destabilization of cyclin.
C、inhibition of Cdc25.
D、inhibition of Wee1.
E、stoichiometric inhibition of CDK.
A、stabilization of cyclin.
B、destabilization of cyclin.
C、inhibition of Cdc25.
D、inhibition of Wee1.
E、stoichiometric inhibition of CDK.
A、To reduce the writing to a suitable length.
B、To remind the readers of the main points.
C、To signal the end of the writing.
D、To leave the readers with the final thoughts on the topic.
A、A. big fires
B、B. violent animals
C、C. frequent earthquakes
D、D. crazy floods
A、3'-TACCACGGCCGGACTTCAGT-5'
B、3'-TAGGACCCGGGGACTTCAGT-5'
C、3'-ATGGTGCCGGCCTGAAGTCA-5'
D、3'-GAGGCACGGCCGGTCAACAGA-5'
A、in a Barr body
B、in the centromere
C、in a transcribed gene during G1
D、in a silenced gene during M phas
E、in a sperm nucleus
A、passive diffusion of smaller molecules.
B、import of proteins.
C、active transport of very large molecules.
D、all of the above.
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