TCRs recognize epitopes only after the immunogens have been partially degraded
Indicate whether the statement is true or false.
Answer: TRUE
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The regulation of body temperature exclusively from the external environment is referred to as
A) endothermy. B) ectothermy. C) homeothermy. D) heterothermy.
In which of the following steps of transcription is the C-terminal domain of RNA polymerase II first phosphorylated?
A. assembly of the preinitiation complex B. initiation C. elongation D. termination complex formation E. after termination
The term 'Incidence' refers to the number of new cases of a disease within a specified period per unit of population.
a. true b. false
Drug addiction occurs when the central nervous system
A. initiates new cell growth that depends on continual input of the drug. B. stores the drug between neurons in the cerebral cortex for later use. C. uses the drug as its sole neurotransmitter. D. adjusts to the increased firing of neurons by reducing the number of membrane receptors in postsynaptic membranes.