1. When comparing regulation of gene expr processes seems to be the most similar
ID: 135017 • Letter: 1
Question
1. When comparing regulation of gene expr processes seems to be the most similar between the two? ression in eukaryotes versus prokaryotes, which of the following A.transcription. B. RNA splicing regulation. C. intron/exon shufting. D. S-capping. E. AUG start codon Which of the following statements about a G protein signaling pathway is A) A G protein-coupled receptor bound to GTP is in its active state. B) A G protein bound to GTP is in its active state. C) A G protein bound to GDP is in its active state. D) Hydrolysis of bound GTP by a G protein activates the G protein. 2. true? 12. Hormones are chemical substances produced in one organ that are released into the bloodstream and affect the function of a target organ. Which of the following conditions is required for the target organ to respond to a particular hormone? A) Cells in the target organ must modify their plasma membranes to allow the hormone to enter the cytoplasm B) The target organ must be the same as the organ that produced the hormone. C) The target organ must have the opposite mating type of the organ that produced the hormone. D) The target organ must have receptors that recognize and bind the hormone molecule 13. What is the most likely mechanism by which testosterone functions inside a cell? A) It acts as a signal receptor that activates tyrosine kinases. B) It binds with a receptor protein that enters the nucleus and activates expression of specific genes C) It acts as a steroid signal receptor that activates ion channel proteins in the plasma membrane D) It coordinates a phosphorylation cascade that reduces spermatogenesis 14. One of the major categories of receptors in the plasma membrane functions by forming dimers, adding phosphate groups, and then activating relay proteins. Which type does this? A) G protein-coupled receptors B) Ligand-gated ion channels C) Steroid receptors D) Receptor tyrosine kinases 15. Why does testosterone, a lipid-soluble signaling molecule that crosses the membranes of all cells,affece only target cells? A) Only target cells retain the appropriate genes regulated by testosterone B) Intracellular receptors for testosterone are present only in target cells C) Only target cells possess the cytosolic enzymes that transduce the signal from testosterone to adenylyl cyclase D) Onl transcription factor y in target cells is testosterone able to initiate the phosphorylation cascade leading to activatedExplanation / Answer
Answer:
1) When comparing regulation of genes expression in eukaryotes verses prokaryotes, which of the following processes seems to be the most similar between the two?
2) Which of the following statements about a G protein signaling pathway is true?
12) Hormones are chemical substances produced in one organ that are released into the bloodstream and affect the function of a target organ. Which of the following conditions is required for the target organ to respond to a particular hormone?
13) What is the most likely mechanism by which testosterone functions inside a cell?
14) One of the major categories of receptors in the plasma membrane functions by forming dimers, adding phosphate groups, and then activating relay proteins. Which type does this?
15) Why does testosterone, a lipid-soluble signaling molecule that crosses the membranes of all cells, affect only target cells?
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