Most ocean currents flow clockwise in the Northern Hemisphere
Indicate whether the statement is true or false.
T
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________ alter repressor proteins thereby increasing the rate of transcription initiation.
A. Effectors B. Corepressors C. Inducers D. Modulators
Vaccines are effective for LONG-TERM protection against diseases because vaccines stimulate _______ formation.
A. plasma-cell B. antibody C. memory-cell D. T-cell
mRNA molecules are exported from the nucleus to the cytoplasm via
a. a consensus sequence located at the 3?terminus. b. the 7-methylguanosine cap structure. c. importin. d. associated proteins that contain export signals.
You are working on a team to characterize a local lake's plankton community. Using a compound microscope, you isolate one specimen from a water sample. It is unicellular and has a specialized feeding groove cut into the cell surface. What cannot be true of this species?
A. It is heterotrophic. B. Glycolysis takes place in a peroxisome. C. Its locomotion is facilitated by one or more flagella. D. It is an osmotroph. E. Its locomotion is facilitated by interlocking protein strips.