Which 5 of the statements above (A-N) are true in muscle cells at rest? Which 5
ID: 63212 • Letter: W
Question
Which 5 of the statements above (A-N) are true in muscle cells at rest?
Which 5 of the statements above (A - N) true in muscle cells at the peak of their response to stimulation by epinephrine?
Which 2 of the statements above (A - N) are never true?
Which 2 of the statements above (A - N) are not part of this pathway but are part of a different signaling pathway?
(A) Adenylyl cyclase activity is balanced by phosphodiesterase activity, maintaining low [cAMP]. (B) Increased phosphorylation of glycogen synthase. (C) The membrane protein, Calcium Release Channel (also known as the ryanodine receptor or IP3 receptor) , stimulates the conversion of ATP to cAMP. (D) Higher concentrations of glucose in the cytoplasm. (E) Higher concentrations of pyrophosphate (PPi) in the cytoplasm. (F) The -adrenergic receptor is in the plasma membrane with no bound epinephrine. (G) The calcium release channel opens up, releasing the stores of intracellular calcium from the endoplasmic reticulum. (H) The concentration of free DAG (diacylglycerol) in the cell membrane rises. (I) G-protein is bound to GDP. (J) G-protein is bound to GTP. (K) High probability that cAMP will be bound to the regulatory subunit of protein kinase A. (L) The cell is converting glucose into the complex carbohydrate, glycogen. (M) High probability that cAMP will be bound to the catalytic subunit of protein kinase A (PKA). (N) Lower concentrations of glucose in the cytoplasm.Explanation / Answer
Muscle cell at rest (A, F, I, L, N)
Epinephrine on muscle (B, C, D, J, K)
Never true (E, M)
Different pathway (G, H)
Related Questions
Hire Me For All Your Tutoring Needs
Integrity-first tutoring: clear explanations, guidance, and feedback.
Drop an Email at
drjack9650@gmail.com
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.