A typical neuron at rest:
Correct answer: A. Is more positive outside than inside
- A. Is more positive outside than inside
- B. Is more negative outside than inside
- C. Has no charge on either side
- D. Has an equal charge on either side
Explanation
Option [A] A typical neuron is more positive outside than inside due to the presence of Na+ K+ pump which countertransports 3Na+ outside and 2K+ inside, removing one extra positive charge outside every time movement occurs.Option[B] At rest neuron is more positive outsideOption [c] Counter-transports of ions occurs in an unequal amount resulting in chargesOption[D] 3 Na+ move outside and 2K+ inside via sodium-potassium pump therefore unequal charge on either side
This question appeared on the UHS MDCAT 2010 paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Neurons and Nerve Impulse
Neurons receive and transmit information through dendrites, the cell body and axons. The topic explains resting potential, depolarization, repolarization, refractory periods and saltatory conduction, followed by synaptic transmission through neurotransmitters. An action potential is distinct from the graded potential produced at a receptor.
Practise Coordination and Control
1,687 free Coordination and Control MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Neurons and Nerve Impulse questions
Which of the following neurotransmitters lies outside the central nervous system?
Which one of the following conditions best describes active membrane potential:
_ conducts nerve impulse in the brain.
The nerve impulse which jumps from node to node in myelinated neurons is called as:
White matter of spinal cord is made up of:
Neuron that carries messages from sense organ to the central nervous system is: