A Neurophysiologist Is Investigating Nerve Reflexes in Two Different Animals

question 62

Multiple Choice

A neurophysiologist is investigating nerve reflexes in two different animals: a crab and a fish. Action potentials are found to pass more rapidly along the fish's neurons. What is the most likely explanation?

• A) The fish's axons are smaller in diameter; small axons transmit action potentials faster than large axons do.
• B) Unlike the crab, the fish's axons are wrapped in myelin.
• C) There are more ion channels in the axons of the crab compared with fish axons.
• D) Unlike the crab, the fish's axons are wrapped in myelin, and the fish's axons are smaller in diameter; small axons transmit action potentials faster than large axons do.

Recognize the features and objectives of the second green revolution.

Identify agroecology and differentiate it from organic farming.

Explain fish ranching and assess its economic viability.

Evaluate different forms of agriculture for sustainability, including challenges associated with certain organic farming practices.

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