Which cross-section of a tree illustrates a strong
compartmentalization response?
a. A
b. B
c. C
d. B and C
e. All of these
Answer: a
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Graded potentials are particularly important for conveying stimulus intensity in
A. sensory neurons. B. motor neurons. C. interneurons. D. skeletal muscle cells. E. Schwann cells.
A certain type of congenital deafness in humans is caused by a rare autosomal (not X-linked) dominant gene
(a) In a mating involving a deaf man and a deaf woman (both heterozygous), would you expect all the children to be deaf? Explain your answer. (b) In a mating involving a deaf man and a deaf woman (both heterozygous), could all the children have normal hearing? Explain your answer. (c) Another form of deafness is caused by a rare autosomal recessive gene. In a mating involving a deaf man and a deaf woman, could some of the children have normal hearing? Explain your answer.
A long-day plant will flower if
a) it is kept in continuous far-red light. b) the duration of continuous light exceeds a critical length. c) the duration of continuous darkness exceeds a critical length. d) the duration of continuous darkness is less than a critical length. e) the duration of continuous light is less than a critical length.
Surfactants are detergents that work as microbicidal agents because they increase the surface tension of cell membranes.
a. true b. false