On the outer surface of the plasma membrane, there are marker molecules that identify the cell type. Often these molecules are
A. inorganic ions.
B. carbohydrate chains.
C. ATP.
D. amino acids.
E. nucleotides.
Answer: B
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Ocean acidification decreases the precipitation of calcium carbonate and thus will probably affect the cycling of Ca and other nutrients in the ocean
Indicate whether the statement is true or false.
Archaeal promoters are most similar to those of ________.
A. eukaryotes B. bacteria C. viruses D. both viruses and bacteria
The amount of time that has passed since two species last shared a common ancestor:
a) is revealed by the degree of similarity in sections of their DNA. b) can be determined for prokaryotic species but not eukaryotes. c) cannot be determined, due to the fact that most species pass through the same embryological stages. d) cannot be determined, due to gaps in the fossil record. e) can be determined by the relative amounts of uranium-238 found in the bones of individuals from each species.
Into 2 pyruvates
What will be an ideal response?