Exergonic reactions
a. are spontaneous
b. have a negative delta G value
c. release energy
d. all of these are correct
Answer: d. all of these are correct
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A mutation that readily reverses to restore the original parental type would most likely be due to a(n)
A) deletion. B) insertion. C) point mutation. D) frameshift mutation.
What was the likely fate of the first life on
earth?
a. destroyed by a meteorite b. outcompeted by multi-celled organisms c. consumed by dinosaurs d. poisoned by oxygen gas e. starvation
A tendon or ligament is made up principally of ________ tissue
Fill in the blank(s) with correct word
Select the valid statements about cell signalling from the list below. There may be more than one valid statement
A. Steroid hormones usually don't need receptors because they can pass freely through the cell membrane. B. IP3 can open Ca2+ channels in the membrane of endoplasmic reticulum C. A decrease in cAMP activates protein kinase A (PKA) D. GPCRs activate a class of trimeric GTP binding proteins