Which source of energy powers the light-independent reactions of photosynthesis?
a. light
b. ATP and NADPH
c. photosystem 2
d. glucose
e. NADP+
ANSWER: b
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This question refers to the 5-stage process of hypothesis testing. What is the appropriate order of the stages when generating and testing a hypothesis?
(1) Experimentation is conducted to determine if the predictions are correct. (2) The hypothesis is accepted or rejected. (3) Observations are made regarding a natural phenomenon. (4) The observations lead to a hypothesis that tries to explain the phenomenon. A useful hypothesis is one that is testable because it makes specific predictions. (5) The data from the experiment is analyzed. A. 1, 2, 3, 4, 5 B. 3, 4, 5, 1, 2 C. 1, 3, 4, 2, 5 D. 3, 4, 1, 5, 2 E. 3, 4, 2, 1, 5
According to the endosymbiont hypothesis,
a. most of the genes from the endocytosized bacteria moved to the nucleus. b. the host anaerobe became dependent on the endocytosized bacteria. c. the endocytosized bacteria became dependent on the host cell. d. the endocytosized bacteria were all photosynthetic. e. most of the genes from the endocytosized bacteria moved to the nucleus, the host anaerobe became dependent on the endocytosized bacteria, and the endocytosized bacteria became dependent on the host cell.
The volume of a typical bacterium is about _____ the volume of a typical eukaryotic cell
a. equal to b. a half c. a tenth d. a hundredth e. a thousandth
The envelope of an animal virus is usually derived from the of its host cell.
A. cell wall B. plasma membrane C. capsule D. receptors