The process by which microorganisms cause diseases is known as
A) pathogenesis.
B) virulence.
C) LD50 (lethal dose50).
D) infection.
Answer: A
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The molecule currently being investigated as a possible means of synthesis of the first proteins is:
A. mRNA. B. DNA. C. tRNA. D. rRNA. E. aminoacyl tRNA synthetases.
___________ and ___________ are structures formed in the fruiting bodies of dikaryotic (n+n) fungi that produce spores
A. Basidia; asci B. Basidia; septa C. Septa; asci D. Basidia; chitins E. Chitins; asci
The enzyme fumarase catalyzes the reversible hydration of fumaric acid to l-malate, but it will not catalyze the hydration of maleic acid, the cis isomer of fumaric acid. This is an example of:
A) biological activity. B) chiral activity. C) racemization. D) stereoisomerization. E) stereospecificity.
Protons are pumped in which stage of photosynthesis?
A. light-capturing B. light-dependent reactions C. light-independent reactions D. glycolysis