Which of the following is true of steroid receptors?
A) The receptor molecules are themselves lipids or glycolipids.
B) The receptor may be inside the nucleus of a target cell.
C) The unbound steroid receptors are quickly recycled by lysosomes.
D) Steroid receptors are typically bound to the external surface of the nuclear membrane.
B
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Any process in which a signal from one individual modifies the behavior of a recipient individual is termed _____
A) cognition B) communication C) reflex D) perception E) conditioning
The step of translation in which an mRNA, a small ribosomal subunit, and tRNA carrying methionine, are aligned together is
A. termination.
B. elongation.
C. initiation.
D. transcription.
E. mitosis.
How many proteins are specified in the genetic code?
a. 4 b. 5 c. 20 d. 64
The events listed below are all necessary for homologous recombination to occur properly:
A. Holliday junction cut and ligated B. strand invasion C. DNA synthesis D. DNA ligation E. double-strand break F. nucleases create uneven strands Which of the following is the correct order of events during homologous recombination? (a) E, B, F, D, C, A (b) B, E, F, D, C, A (c) C, E, F, B, D, A (d) E, F, B, C, D, A