× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
5
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
New Topic  
HELP1234 HELP1234
wrote...
Posts: 1
Rep: 0 0
9 years ago
Which of the following molecular movements is due to diffusion or osmosis?

A. The sodium-potassium pump pumps three sodium ions out of a neuron for every two potassium ions it pumps in.

B. Cells of the pancreas secrete insulin into the bloodstream.

C.When a plant cell is placed in concentrated salt water, water moves out of the cell.
Read 2739 times
1 Reply

Related Topics

Replies
wrote...
9 years ago
A, pumps are active transport of course.
C is a typical osmosis example.
B is passive transport - diffusion.
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1208 People Browsing
Related Images
  
 1429
  
 6381
  
 2461
Your Opinion
Who's your favorite biologist?
Votes: 586

Previous poll results: Where do you get your textbooks?