If a New Anti-Cancer Drug Is Found to Be Effective

question 55

Multiple Choice

If a new anti-cancer drug is found to be effective in initial tests with mice, what might researchers conclude?

• A) If the drug was effective in a large number of mice, it will therefore be effective in humans.
• B) If the drug was effective in a small proportion of mice, it will be effective in a small proportion of humans.
• C) The mice have provided a positive control in this experiment that proves the drug is effective in humans.
• D) The drug is effective in the mouse model; it must still be tested in humans.
• E) The effect of the drug on mice has no bearing on the effect of the drug on humans.

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Definitions:

Synaptic Vesicles

Membrane-bound sacs in the neuron's terminal bulb that store neurotransmitters ready for release at the synapse.

Presynaptic Membrane

The part of the neuron that faces the synaptic cleft and is responsible for the release of neurotransmitters to signal adjacent neurons.

Depolarization

A decrease in the charge difference across a plasma membrane; may result in an action potential in a neuron or muscle cell.

Squid Axon Experiments

Classic scientific experiments conducted to understand the properties of nerve cells by studying the giant axon of squid.