An early example of synthetic biology is the use of genetically modified Escherichia coli to produce
a. gels for electrophoresis.
b. photographs.
c. cows with higher milk production.
d. synthetic cells.
Answer: B
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The key chemical messenger responsible for increasing cardiac output when animals are exercising or under certain stresses is
A. epinephrine. B. acetylcholine. C. dopamine. D. serotonin. E. glutamate.
The most common number of carbons in fatty acid hydrocarbon chains of membrane phospholipids is
A) 7. B) 10. C) 16. D) 19. E) 24.
The solubilization of metals from low-grade ores by microorganisms is called ________.
What will be an ideal response?
A microtome is used to
A) view microscopic organisms. B) slice thin sections of specimens. C) focus short wavelengths of light. D) manipulate tiny objects. E) dissect cellular organelles.