Which of the following BEST defines a sensory receptor?
a. an organ, such as the human eye
b. endings of sensory neurons
c. highly branched endings of axons
d. any form of energy
e. an action potential
B
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Vernalization can result in the remodeling of chromatin in some species, which means:
A. plants are able to "know" if they have experienced winter. B. plants can pass on acquired changes to their offspring. C. plants may grow new cells, and those cells will not "know" they have experienced winter. D. products of mitosis will not "remember" winter. E. products of meiosis will "remember" winter.
Body cells of human females contain
a. one X chromosome and one Y chromosome. b. two X chromosomes. c. two Y chromosomes. d. two O chromosomes. e. chromosomes X, Y, and O.
Which of the following is true of the structure
labeled “C”? a. It is composed of tubulin subunits. b. It is composed of actin subunits. c. It is a microtubule. d. It is an intermediate filament. e. It moves chromosomes during nuclear division.
Production of sperm in males by the process of meiosis and maturation.
What will be an ideal response?