Which of the following is NOT a characteristic
of mitochondria?
a. they are the sites of anaerobic respiration
b. they have a double membrane
c. they make ATP
d. they have their own ribosomes
e. all of these are characteristics of
mitochondria
A
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The septum in a fungus is:
A. the seventh cellular division B. the seventh nucleus in a dikaryote cell C. the seventh cell from the tip of the hypha D. the demarcation between the mycelium and the fruiting body E. cross walls separating the hyphae into cells
Roughly a quarter of all known species are currently threatened with extinction. What is the primary source of this threat?
What will be an ideal response?
Killed vaccines work by stimulating
A) an antibody response. B) phagocytic activity. C) the cell-mediated immune response. D) cytotoxic T cells. E) lymphocyte proliferation.
An amino acid that is not an essential amino acid would be one that an animal __________.
a. can obtain from its own proteins b. gets in sufficient quantities in its diet c. has the needed enzymes to synthesize d. obtains from its microbial symbionts e. does not use in protein synthesis