Question

11) Why is it very difficult to fight viral infections? A) A virus is not alive and therefore impossible to kill. B) It is hard to destroy a virus without damaging the host. C) The cell wall of a virus is too thick to penetrate. D) A and B 12) A new class of antiviral agents called protease inhibitors has A) Prevent proteases from combining to form new viral agents B) Act as ion tunnels, inhibiting the ability of a virus maintain its charge C) Limit the supply of amino acids available for viral replication D) Act as nucleotide mimics and shut down DNA production 13) What is the role of a neuron in the body? A) To accept light signals and convert them into electrical signals B) The neuron is a neutral particle with the same mass as a proton C) To store sodium ions D) To transmit electrical impulses 14) What is the main difference between stress neurons and maintenance neurons? A) The width of the synaptic cleft B) The type of neurotransmitters they produce C) The shape of the neuron D) The electrochemical potential generated by the neuron 15) Ethyl alcohol is A) A depressant B) an opioid C) a stimulant D) all of the above 16) Why does long term abuse of amphetamines and cocaine cause nervous system damage? A) The sodium levels become too high. B) The synaptic cleft changes shape. C) The ability to make neurotransmitters declines. D) The nerve cell dies.

Answer 1

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