Experimenters Replaced the Statoliths in a Crayfish Statocyst with Iron

question 27

Multiple Choice

Experimenters replaced the statoliths in a crayfish statocyst with iron filings and then held a magnet above the animal.Based on your knowledge of the function of statoliths,what would they observe?

• A)The crayfish stayed upright.
• B)The crayfish lay on its side.
• C)The crayfish turned upside down.
• D)The crayfish attempted to escape by rapidly swimming backwards.
• E)None of these choices are correct.

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Definitions:

Antagonists

Substances that block or dampen a biological response by binding to and inhibiting the function of a receptor.

Neurotransmitters

Chemical substances that transmit signals across a synapse from one neuron to another, facilitating neuronal communication.

Axons

Long nerve fibers that are part of neurons, responsible for transmitting electrical impulses away from the neuron's cell body.

Action Potentials

Brief electrical impulses that are the means by which information is transmitted along neurons and across synapses.