If a Research Hypothesis Posits That There Is a Direct

question 37

Multiple Choice

If a research hypothesis posits that there is a direct relationship between two variables,the test is ______.

• A)one-tailed
• B)two-tailed
• C)negative
• D)nondirectional

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Definitions:

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.

Alan Hodgkin

A British physiologist and biophysicist who, along with Andrew Huxley, elucidated the ionic mechanism underlying nerve impulse transmission, work for which they received the Nobel Prize.