In Figure 25

question 1

Multiple Choice

In Figure 25.21 the researchers measured a clam's ability to burrow as an indicator of paralysis due to inhibition of a Na⁺ transporter by saxitoxin.Which of the following would occur in sensitive clam cells that have been exposed to saxitoxin?

• A)Na⁺ ions would no longer be able to leave a neuron by facilitated diffusion
• B)Na⁺ ions would no longer be able to leave a neuron by active transport
• C)Na⁺ ions would no longer be able to enter a neuron by active transport
• D)Na⁺ ions would no longer be able to enter a neuron by facilitated diffusion

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