In the noncyclic pathway,
a. there is a one-way flow of electrons from
photosystem I to photosystem II.
b. ATP alone is produced.
c. hydrogen ions are pumped into the thylakoid
compartment.
d. NADP+ accepts only H+.
e. H+ accumulates in the stroma.
Answer: c
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Which of the following benefits to humans is NOT attributable to phenolics?
A. antioxidants in red wine B. the flavor of vanilla C. absorption of ultraviolet radiation D. the sweetness of honey E. the taste of chillies
Match the following items with the correct phrases.
_______1. Semisynthetic penicillins that are known as penicillinase-resistant penicillins. _______2. Examples of antibiotics that inhibit cell wall synthesis. _______3. Semisynthetic penicillins that are not resistant to penicillinase. _______4. Examples of antibiotics that inhibit protein synthesis. _______5. Examples of antibiotics produced by molds. a. penicillin, bacitracin, cephalosporins, vancomycin b. ampicillin and carbenicillin c. methicillin, oxacillin, cloxacillin, nafcillin d. tetracycline, chloramphenicol, erythromycin, streptomycin e. penicillin and cephalosporins, but not bacitracin and vancomycin
Adh____
a. increases glucose reabsorption b. decreases the filtration rate c. increases tubular secretion d. increases water reabsorption e. decreases amino acid reabsorption
Desiccation, a time-honored method of preserving food, is effective because the
A) heat of the process kills microbes. B) freezing step of the process kills microbes. C) salt concentration is too low to support metabolic function. D) UV light used in the process of sun drying penetrates effectively. E) water content is too low to support metabolic function.