You have identified a novel cytoplasmic protein. Through sequence analysis you are able to identify the presence of a number of serine/threonine phosphorylation motifs. Based on these data, you hypothesize that this protein may be a substrate for what kind of enzyme?
A. A phospholipase
B. A receptor tyrosine kinase
C. A G protein-coupled receptor
D. A protein kinase
E. A tyrosine phosphatase
Answer: D
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Microorganisms in abscesses often are not killed by antimicrobial agents because
A. the microorganisms stop dividing. B. of the chemical nature of the pus. C. of the lack of blood vessels. D. of the high level of oxygenation. E. the microorganisms stop dividing, of the chemical nature of the pus AND of the lack of blood vessels.
Tissues are to __________ as organs are to organ systems
a. cells b. organs c. organisms d. all of these
If a new species with root-like structures is discovered, how could you tell if it is a plant or a
fungus?
a. Compare the composition of the cell walls. b. Look for green coloration. c. Look for the presence of chloroplasts. d. All of these would be useful
The fruit wall, or pericarp, develops from the
a. ovary wall. b. petals. c. seed coat. d. endosperm. e. receptacle.