Chromosomes are replicated during the ______ phase.
A. G1
B. G2
C. S
D. M
E. meta-
C. S
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Which of the following is not a cellular function of microfilaments?
A. flagellar movement B. transport of organelles C. organization of proteins in the plasma membrane D. formation of daughter cells following mitosis
How might absorption of organic compounds into clays assist in their aggregation and organization
into membrane-bound protocells?
a. Clays contain many minerals in extremely thin layers and readily repel ions, forcing multiple chemical interactions. b. Clays are highly structured, contain water, and store potential energy that could drive the chemical reactions forward. c. Clays lack water, forcing the concentration of the organic molecules and thus driving multiple interactions. d. Clays are extremely resistant to temperature changes and thus would insulate the organic compounds from temperature changes in the atmosphere. e. None of the above statements accurately explain clays’ possible roles in the formation of protocells.
Why is it important that CO2 be rapidly removed from the cells of animals?
a. because high cellular CO2 affects cellular respiration b. because high cellular CO2 is a narcotic poison c. because CO2 damages nerve function d. because CO2 damages muscle function
How many "turns" of the Calvin cycle are required to produce one molecule of glucose?
a. 1 b. 2 c. 3 d. 6 e. 12