In mitosis, the main difference between plant and animal cells is that
A. plants do not undergo cytokinesis.
B. plants produce a cell plate to segregate the daughter nuclei, while animals form a cleavage furrow.
C. plants have a central vacuole, while animal cells do not.
D. plants produce a cell membrane in cytokinesis, while animals form a cell plate.
E. in plants, kinetochore microtubules shorten and draw chromosomes toward the poles; in animals, polar microtubules lengthen to push chromatids apart.
B. plants produce a cell plate to segregate the daughter nuclei, while animals form a cleavage furrow.
You might also like to view...
During which cellular process do all three forms of RNA associate?
A. ribosome assembly B. chromatin formation C. formation of the nucleolus D. protein synthesis
All of the following pertain to cephalosporins, except
A. many are administered by injection, not orally. B. they have a beta-lactam ring. C. newer generations have activity against gram-negative bacteria. D. they have greater resistance to beta-lactamases. E. they are are synthetic drugs.
An F? donor includes F DNA plus a segment of bacterial chromosome DNA. If conjugation is interrupted before the entire F? chromosome transfers, what could be the expected consequences?
A) integration of some but not all F? genes into the recipient's chromosome B) a smaller F? plasmid than had been present in the donor C) failure of the F? strand to circularize in the recipient D) change of the recipient from F– to F+ E) formation of a recipient that is a stable partial diploid
Answer the following questions true (T) or false (F)
1. When a neuron is resting, it has a higher concentration of Na+ ions inside the cell membrane than outside. 2. The action potential moves across the synaptic cleft as an electrical signal. 3. The parasympathetic division of the autonomic nervous system would be key in preserving an individual who is escaping from a dangerous situation.