In bull elks, the mating season is triggered by the length of daylight which has a direct role on ____
a. metabolism
b. endocrine activity
c. catabolism
d. ecological events
e. thermodynamics
ANSWER: b
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The chemical reaction illustrated in the accompanying figure _____
A) is a hydrolysis reaction B) results in a peptide bond C) joins two fatty acids together D) links two polymers to form a monomer E) joins two phospholipids in a bilayer
Imagine you are talking to your friend who is very excited because he has just transduced his first batch of bacteria in the laboratory. What does this mean?
A. He introduced a gene of interest into his bacteria using viruses. B. He introduced a gene of interest into his bacteria using other bacterial species that can form pili. C. He introduced a gene of interest into his bacteria by lysing other bacterial cells and exposing his bacteria to this mixture. D. He produced a strain of antibiotic-resistant bacteria by exposing his bacterial cultures to antibiotics. E. Through periodic selection, he was able to isolate a gene of interest in his bacteria.
The organelle responsible for the biosynthesis of proteins that are destined for secretion by the cell is the
A. Golgi apparatus. B. lysosome. C. vesicle. D. endoplasmic reticulum. E. mitochondria.
You are studying a biochemical pathway. Preliminary results suggest that this pathway is subject to end-product repression. This pathway is therefore most likely to be a(n) ________ pathway
A) anabolic B) catabolic C) constitutive D) induced E) unregulated