If a drug inhibits the uptake of an excitatory neurotransmitter after it has been released into the synaptic cleft, what is
the most likely result?
a. an increased number of IPSPs
b. an increased number of EPSPs
c. a prolonged hyperpolarization
d. a decreased number of IPSPs
e. a decreased number of EPSPs
ANSWER: b
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Transcription in eukaryotes occurs in the
A) RNA polymerase. B) endoplasmic reticulum. C) cytoplasm. D) nucleus.
Which of the following limits the maximum size of a cell?
A.) the stage of the cell cycle B.) the ratio of cell surface are to volume C.) the number of mitochondria in the cell D.) the size of the organism
You are the scientific consultant for a television show about forensic analysis. In an upcoming episode, investigators will compare the DNA of a suspect and a DNA sample collected from the victim's fingernails. You are to write up a brief explanation of the technique required for comparing the DNA. Which technique should you explain?
A. DNA fingerprinting B. Fluorescent in situ hybridization C. RT-PCR D. RNAi
The portion of the body fluid contained in cells is
a. interstitial fluid. b. plasma. c. intracellular fluid. d. extracellular fluid.