Gian-Carlo is going to have part of his adrenal cortex removed because of a tumor. After the surgery, he may need ________
A) melatonin and insulin B) calcitonin
C) cortisol D) oxytocin
Answer: C
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Use of microbial enzymes for bioconversion reactions is preferred because alternative chemical synthesis requires harsh manufacturing conditions.
Answer the following statement true (T) or false (F)
Direct repeats can cause mutation when
A) a person encounters a mutagen. B) homologs misalign during meiosis such that the first copy of the gene on one chromosome lies opposite the second copy on the homolog. C) introns are not removed promptly and their sequences are included in the gene product. D) they bond within the same DNA strand, forming loops that disrupt replication enzymes.
Which of the following statements concerning cryptochrome is FALSE?
a. It is implicated in resetting the biological clock. b. It is a "clock protein." c. It absorbs green light. d. Its counterparts are found in fruit flies and mice. e. It sometimes interacts with phytochrome.
Explain how the movement of hydrogen and potassium ions across the membranes of guard cells opens and closes the
stomata. What will be an ideal response?