Which of the following plant hormones is associated with the closure of stomata in a plant under water stress?
A. gibberellin
B. auxin
C. ethylene
D. cytokinin
E. abscisic acid
Answer: E
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Of the following, which kingdom contains the most diversity in terms of DNA sequences?
a. Plantae b. Protista c. Fungi d. Animalia e. All of these are approximately equivalently diverse.
Which of the following has NOT been a basis for classification of the protozoa?
A. means of locomotion B. genetic sequences C. photosynthetic ability D. habitat E. ability to form a dormant stage
Some enzymatic receptors and most G protein-coupled receptors transmit the signal into the cytoplasm by utilizing other substances within the cytoplasm that are referred to as:
A. genes. B. intracellular receptors. C. second messengers. D. first messengers.
Early investigators associated the tendency to violent criminal behavior with the ____________________ karyotype, but there is no evidence of a direct link between the two
Fill in the blank(s) with correct word