Which of the following is not generally true about fatty acids produced by microorganisms?
A. Gram-positive bacteria often make cyclopropane fatty acids.
B. Fatty acids are monocarboxylic acids.
C. Fatty acids have long alkyl chains.
D. All of the choices are correct.
Answer: A
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When communities of organisms interact with their physical environment they form a(n)
A. population. B. organism. C. community. D. ecosystem. E. macromolecular community.
The sequential process of fatty acid catabolism to acetyl CoA is called
A) hydrogenation. B) oxidative phosphorylation. C) ?-oxidation. D) the glyoxylate cycle. E) the Cori cycle.
Is antigenic shift alone likely to lead to influenza pandemics?
A. Yes-ONLY antigenic shift can lead to the large-scale mixing of gene elements required to produce a pandemic flu strain. B. No-ONLY antigenic DRIFT can lead to the large-scale mixing of gene elements required to produce a pandemic flu strain. C. Perhaps-but it would most likely be a mixture of antigenic shift AND drift that would result in a pandemic strain. D. No-antigenic SHIFT is responsible for changes in the hemagglutinin protein, while antigenic DRIFT is responsible for changes in the neuraminidase protein. You must have changes in both to lead to a pandemic strain.
Compared to adaptive immunity, innate immunity
has a(n) __________ response time, is triggered by __________, and has __________persistence. a. slow; pathogens; long-term b. immediate; tissue damage; no c. slow; tissue damage; long-term d. slow; pathogens; no e. immediate; pathogens; long-term