Marcus is excited to be working in the laboratory of Dr.Flores,an expert on electrical signaling in neurons.However,he is surprised to learn that the research is done on squid axons placed in sea water.He asks Dr.Flores the reasons for this.Which of the following is NOT one of the reasons that Dr.Flores provides?
A)A recording electrode can be inserted into a squid axon without disrupting its function.
B)The readings from inside the axon can be compared to the readings from the surrounding seawater.
C)Squid axons are myelinated,increasing the speed of propagation of an action potential.
D)Squid axons can be as great as 1 millimeter in diameter and are visible to the naked eye.

Question

Marcus is excited to be working in the laboratory of Dr.Flores,an expert on electrical signaling in neurons.However,he is surprised to learn that the research is done on squid axons placed in sea water.He asks Dr.Flores the reasons for this.Which of the following is NOT one of the reasons that Dr.Flores provides?
A)A recording electrode can be inserted into a squid axon without disrupting its function.
B)The readings from inside the axon can be compared to the readings from the surrounding seawater.
C)Squid axons are myelinated,increasing the speed of propagation of an action potential.
D)Squid axons can be as great as 1 millimeter in diameter and are visible to the naked eye.

Quizplus · Accepted Answer

Squid axons are actually unmyelinated, meaning they do not have the protective covering that increases the speed of action potential propagation seen in vertebrate axons. Therefore, this would not be a reason for using squid axons in Dr. Flores' research. The other options are all valid reasons for using squid axons in this type of research.

Marcus Is Excited to Be Working in the Laboratory of Dr.Flores,an