During anaphase B, full separation of spindle poles requires the action of:
A. polar microtubules (polar MTs)
B. astral microtubules (astral MTs)
C. kinesins and dynein
D. All above.
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Intermediate Filaments (IFs) use the motor protein:
A. Dynein
B. Myosin
C. Kinesin
D. None
Which of the following statements about cell cycle is correct:
A. Cells that cannot degrade M-phase cyclins would not be able to exit (退出) mitosis.
B. Cells that always express high levels of p21 would arrest permanently in G1.
Cells that cannot phosphorylate Rb would be unable to enter S phase
D. All above
HeLa is a _____________ cell line
A. Breast cancer
B. Thyroid cancer
Cervical cancer
D. Prostate cancer
During oxidative phosphorylation, H2O is formed. Where does the oxygen for the synthesis of the water come from?
A. Carbon dioxide (CO2)
B. Glucose (C6H12O6)
C. Molecular oxygen (O2)
D. Pyruvate (C3H3O3–)
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