As a research scientist, you measure the amount of ATP and NADPH consumed by the Calvin cycle in 1 hour. You find that 30,000 molecules of ATP were consumed, but only 20,000 molecules of NADPH were consumed. Where did the extra ATP molecules come from?
A) photosystem II
B) photosystem I
C) cyclic electron flow
D) linear electron flow
E) chlorophyll
Answer: C
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Intermediate filaments
A) were first discovered in muscle cells. B) are grouped into five classes based on the cell types in which they are found. C) have molecular masses averaging 500 kDa. D) are smooth and sticky. E) assemble from nonfibrous filaments.
The complete genetic information of a person is isolated from some of her cells, cut with restriction enzymes, and the
resulting fragments inserted into cloning vectors. Next, the recombinant DNA molecules are introduced into bacteria for cloning purposes. This describes the procedure for creating a(n) ____.
a. genetic library b. mRNA library c. gene library d. DNA library e. nucleotide library
Which of the following terms refers to microorganisms that live in or on the body and cause harm?
A. commensals B. mesophiles C. thermophiles D. pathogens E. halophiles
Members of the genera Bacillus and Clostridium are noted for their ability to produce endospores
a. true b. false