During which growth phase will gram-positive bacteria be most susceptible to penicillin?
A) lag phase
B) log phase
C) death phase
D) stationary phase
E) The culture is equally susceptible during all phases.
B
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Starting with citrate, which of the following combinations of products would result from three acetyl CoA molecules entering the citric acid cycle (see the accompanying figure)?
A) 1 ATP, 2 CO2, 3 NADH, and 1 FADH2 B) 2 ATP, 2 CO2, 3 NADH, and 3 FADH2 C) 3 ATP, 3 CO2, 3 NADH, and 3 FADH2 D) 3 ATP, 6 CO2, 9 NADH, and 3 FADH2 E) 38 ATP, 6 CO2, 3 NADH, and 12 FADH2
Histones bond to DNA by ____ of DNA
a. an ionic attraction to the phosphate groups b. hydrogen bonding to the deoxyribose sugars c. an ionic attraction to the nitrogenous bases d. hydrogen bonding with the nitrogenous bases e. covalent bonds to the deoxyribose sugars
Most density-dependent factors show negative feedback relative to population size. Which one of the following is more likely to show positive feedback relative to population size?
A. competition in small populations B. competition in large populations C. fecundity in small populations D. fecundity in large populations E. mortality in large populations
If blood volume increases, blood pressure will ________ and the firing rate of baroreceptors will ________.
A. decrease; increase B. decrease; decrease C. increase; decrease D. increase; increase