Which of the following is NOT true of long-term potentiation (LTP)?
A. Associated with the removal of AMPA glutamate receptors
B. Repeated stimulation enhance excitability
C. It is a form of synaptic plasticity
D. Associated with insertion of AMPA glutamate receptors
Answer: A
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Despite the fact that the partial pressure difference is so much smaller for CO2, why is there as much CO2 exchanged between the alveoli and blood as there is O2, ?
a) CO2 is much more soluble in blood than O2. b) The capillary walls are more permeable to CO2 than O2. c) CO2 is a smaller molecule and diffuses faster than O2.
A(n) ________ is any substance capable of mobilizing our immune system and provoking an immune response
A) interferon B) antibody C) antigen D) pyrogen
Which hormone targets the kidney?
A. Aldosterone B. Erythropoietin C. Leptin D. Calcitriol E. Angiotensinogen I
Determine the sequence of the following events in a cell after exposure of the cell to a chemical signal
(1) increased synthesis of a protein (2) the chemical signal combined with a cytoplasmic receptor (3) an increase in the nuclear concentration of the chemical (4) an increase in mRNA synthesis (5) genes are activated A. 1, 2, 3, 4, 5 B. 2, 1, 3, 5, 4 C. 2, 4, 5, 3, 2 D. 2, 3, 5, 4, 1 E. 2, 3, 4, 5, 1