Which of the following enzymes is associated with the formation of peptide bonds?
A) peptidase
B) aminoacyl transferase
C) peptidyl transferase
D) peptide hydrolase
E) inteins
Answer: C
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How is the leucine zipper formed, and what is its function?
What will be an ideal response?
It has since been discovered that many plants synthesize molecules that destroy the corpora alata, the structures responsible for synthesis of juvenile hormone. How do levels of juvenile hormone disrupt the insect life cycle?
A. Exposure to juvenile hormone prevents the larvae from developing into adult insects. B. Exposure to juvenile hormone causes juvenile insects to die. C. Excess juvenile hormone causes insects to molt prematurely. D. Exposure to juvenile hormone prevents molting.
A(n) ________ is the ring of cytoplasm lining the plasmodesmata.
Fill in the blank(s) with the appropriate word(s).
Which of the following is (are) an effect(s) of auxin?
A. Trees sprayed with auxin will keep mature fruit from falling to the ground. B. Applied to a woody cutting, auxin causes roots to develop. C. Under the effect of gravity, auxin moves to the lower surface of roots and stems, causing roots to curve downward and stems to curve upward. D. Auxin production by seeds promotes the growth of fruit. E. All of the choices are effects of auxin.