Which of the following statements about steroid receptors is FALSE?
A. The receptors undergo a conformational change after binding the steroid.
B. The receptors are localized to the plasma membrane.
C. Once the steroid binds the receptor, the steroid/receptor complexes dimerize.
D. Steroid receptors act as transcriptional factors, regulating the expression of certain genes and the subsequent production of proteins.
E. Steroid receptors are localized to either the cytoplasm or nucleus.
B. The receptors are localized to the plasma membrane.
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Alternation of heteromorphic generations
(a) is found only in the bryophytes. (b) is common to all land plants. (c) is typical of most green algae. (d) occurs in the liverworts but not mosses.
Of the 64 triplet combinations in the genetic code, ____________________ code(s) for amino acids and ____________________ code(s) for the signal that ends protein synthesis
Fill in the blank(s) with correct word
What is the main difference between habituation and conditioning?
A. Habituation involves learning, while conditioning does not. B. Habituation involves genetic imprinting, while conditioning involves only learned behavior. C. Habituation involves a stimulus with no association, while conditioning involves a stimulus with an association. D. Habituation involves an increase in the intensity of response, while conditioning involves a decrease in intensity of response. E. Habituation lacks an external stimulus, while conditioning involves both external and internal stimuli.
Root formation in stem cuttings can be
improved by the application of a. synthetic auxins. b. abscisic acid. c. salicylic acid. d. citric acid. e. nitric acid.