Where are the youngest wood and the youngest bark in a tree trunk?
A) Youngest wood is in the center of a tree; youngest bark is the outside of the bark.
B) Youngest wood is in the center of a tree; youngest bark is the inner part, next to the vascular cambium.
C) Youngest wood is toward the outside, near the vascular cambium; youngest bark is the outside of the bark.
D) Youngest wood is toward the outside, near the vascular cambium; youngest bark is the inner part, next to the vascular cambium.
D
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The Calvin cycle
A) is responsible for the fixation of CO2 into cell material. B) utilizes both NAD(P)H and ATP. C) requires both ribulose bisphosphate carboxylase and phosphoribulokinase. D) uses CO2, NAD(P)H, and ATP to make biomass with ribulose bisphosphate carboxylase and phosphoribulokinase.
Collecting data without a specific hypothesis in mind is called ______.
A. reductionism B. hypothesis testing C. discovery-based science D. theoretical E. All of these choices are correct
When a mixture of live nonvirulent bacteria and dead virulent bacteria was injected into mice, Griffith unexpectedly found that the injected mice died. He explained this result by suggesting that the nonvirulent bacteria are being
A. transformed. B. translated. C. activated. D. expressed. E. transcribed.
Steroids are lipids.
a. true b. false