Sodium and potassium ions cross the neuron's membrane to cause which of the following processes?
A) action potential
B) passive transport
C) refractory period
D) transmission
A
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Treponema pallidum
A. is missing several important genes essential for DNA replication. B. requires protein factors found in blood. C. lacks numerous biosynthetic pathways and thus has numerous nutritional requirements. D. is missing the pathway for peptidoglycan synthesis.
Which of the following are phagocytic glial cells that fight infection and remove debris?
A) microglia B) oligodendrocytes C) Schwann cells D) myelin sheath cells E) astrocytes
A target cell that is affected by a particular steroid hormone would be expected to have
A) an intracellular receptor protein that binds the hormone. B) a cell-surface receptor protein that binds the hormone. C) enzymes that are activated or inactivated by the intracellular hormone-receptor complex. D) enzymes that are activated or inactivated by the hormone's second messenger.
Vasily thinks that drinking alcohol heightens his alertness and awareness of his surroundings and that he is a better driver after drinking several beers. Persuade him otherwise
What will be an ideal response?