Assume a cell with the following conditions. K+ Equilibrium Potential = -81 mV Na+ Equilibrium Potential =...

90.2K

Verified Solution

Question

Biology

Assume a cell with the following conditions.
K⁺ Equilibrium Potential = -81 mV
Na⁺ Equilibrium Potential = +58 mV
The plasma membrane of the cell is permeable only toK⁺
The membrane potential is constant over time
Which of the following statements is/are correct?
a.
The cell must expend energy to maintain a K+ concentrationgradient.
b.
The membrane potential is -70mV.
c.
The rate of K+ exiting the cell is equal to the rate of K+entering the cell.
d.
both a) and b) are correct, and c) is incorrect
e.
a), b) and c) are all correct
Which of the following statements is/are correct for anendotherm when ambient temperature decreases below thethermoneutral zone?
a.
The driving force for heat loss to the environment increases
b.
Unit metabolic rate increases
c.
Body temperature decreases in proportional with ambienttemperature
d.
both a) and b) are correct, and c) is incorrect
e.
a), b) and c) are all correct

Answer & Explanation Solved by verified expert

4.1 Ratings (716 Votes)

e a b and c are all correct At the steady state membrane potential the total flux of charge across the membrane taking into account all the potential ions must be zero If the total charge flux were not zero the membrane potential See Answer

Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:

Unlimited Question Access with detailed Answers
Zin AI - 3 Million Words
10 Dall-E 3 Images
20 Plot Generations
Conversation with Dialogue Memory
No Ads, Ever!
Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!

Become a Member

	a.	The cell must expend energy to maintain a K+ concentrationgradient.
	b.	The membrane potential is -70mV.
	c.	The rate of K+ exiting the cell is equal to the rate of K+entering the cell.
	d.	both a) and b) are correct, and c) is incorrect
	e.	a), b) and c) are all correct

	a.	The driving force for heat loss to the environment increases
	b.	Unit metabolic rate increases
	c.	Body temperature decreases in proportional with ambienttemperature
	d.	both a) and b) are correct, and c) is incorrect
	e.	a), b) and c) are all correct