______ is/are released from synaptic vesicles into the synaptic cleft.
a) salts
b) chloride ions
c) neurotransmitters
d) cocaine
Ans: c) neurotransmitters
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Reproduction always involves which of the following?
a. creation of a minimum four cells per round of cell division b. creation of genetically identical cells c. the use of DNA as a basis for cellular reproduction d. the use of RNA as a basis for cellular reproduction
_____ is the phase of the cell cycle in which DNA replicates
1.G1 2.S phase 3.G2 4.Mitosis 5.Interphase
Where are most glucose transporter proteins ("GLUTs") located when levels of the hormone insulin are LOW?
A. inserted into the nuclear membrane B. inserted into the plasma membrane C. in the membranes of intracellular vesicles D. in the endoplasmic reticulum E. in the liver-they are transported to other cells when glucose levels rise.
If the first living thing was produced on Earth,
A. it was produced in the atmosphere. B. it was an aerobic heterotroph. C. spontaneous generation occurred. D. None of these answers is correct.