What part of a cell's cytoplasm is responsible for the diversity of nerve cell shape?
A. the cytoskeleton
B. the endomembrane system
C. the nucleus
D. All of the answer options are correct.
A
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Kinesin is a motor molecule that is characterized by
A) activation of sliding in flagellar microtubules. B) sliding along actin in sarcomere. C) motion toward the "plus" end of the microtubule. D) motion along actin filaments. E) motion toward the "minus" end of the microtubule.
The unfolded protein response slows the production of ________ and increases the ________
A) signal recognition particles; activity of proteasomes B) most proteins; production of lysosomal proteins C) protein disulfide isomerase; activity of proteasomes D) most proteins; production of proteins required for protein folding and degradation
During menopause, ____.
A. estrogen levels rise B. menstruation increases C. ovulation ceases D. women experience chills E. weight loss is typical
Birds, like mammals, can regulate their body temperatures within close limits. Therefore birds and mammals are called
A. endothermic. B. heterothermic. C. ectothermic. D. poikilothermic.