Which of the following events would be controlled by an external signal?
A) Cell division.
B) Prophase proceeds into metaphase.
C) The chromosomes align at the equatorial plane before the cell begins anaphase.
D) All of the DNA is copied before the cell enters into the G2 phase.
E) All of these are controlled by an external signal.
Ans: A) Cell division.
You might also like to view...
Why is it more likely that coincidental homologies (i.e., similarities that are just by chance) are statistically more likely to occur with DNA than protein comparisons between species?
What will be an ideal response?
A neuron at rest has a charge difference across its cell membrane, with the interior of the cell negative relative to the exterior. This difference in charge across the plasma membrane is referred to as ________ potential
A) action B) resting C) graded D) refractory E) depolarization
Which of the following terms correctly describes carnivores?
A) Primary consumers B) Detritus consumers C) Autotrophs D) Consumer producers E) Secondary consumers
Löffler syndrome is associated with which roundworm infection?
a. S. stercoralis b. Ancylostoma duodenale c. Trichostrongylus spp. d. A. lumbricoides