The effect of a given transmitter within a synapse is determined by the _____
type of neurotransmitter released
amount of neurotransmitter released
type of receptor
number of Schwann cells on the axon
C. type of receptor
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Tissues of sharks are isotonic to seawater, but their concentrations of sodium ions, potassium ions, and chloride ions in cells and extracellular fluids are similar to those of freshwater fishes. What can you infer about the movement of sodium and chlorid
A) To maintain homeostasis of sodium and chloride levels, the shark must take up additional sodium and chloride from seawater. B) Sodium and chloride will diffuse into shark gills from seawater down their concentration gradient. C) Sharks conserve sodium and chloride, limiting excretion. D) Sodium and chloride must be eliminated through the gills.
Which of the following hypotheses relies on the chemical reaction between hydrogen sulfide (HS2) and iron (Fe) for the built up of a H2 concentration gradient to provide the necessary energy for the reduction of N2 to NH3?
A. Reducing Atmosphere Hypothesis. B. Extraterrestrial Hypothesis. C. Deep-Sea Vent Hypothesis. D. Both Reducing Atmosphere and Extraterrestrial Hypotheses. E. All three hypotheses use this exact reaction to create a chemical gradient to form amino acids.
Mycobacterium leprae is only grown in living cells
Indicate whether this statement is TRUE or FALSE.
You predict that a side effect of Fat Away will be increased
A) production of NADH. B) production of pyruvate. C) production of lactate. D) body temperature.