× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
r
4
L
4
3
d
3
M
3
l
3
V
3
s
3
d
3
a
3
g
3
j
3
New Topic  
redheadprincess redheadprincess
wrote...
Posts: 706
Rep: 0 0
6 years ago
Which of the following statements concerning active transport is true?
 a. It takes place in the same direction as a concentration gradient.
  b. It requires no expenditure of energy by the cell.
  c. It can be compared to water running downhill.
  d. A membrane-associate protein must be involved.
Read 189 times
2 Replies
Replies
Answer verified by a subject expert
cstanish2cstanish2
wrote...
Posts: 330
Rep: 0 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

wrote...
2 years ago
Thank you
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1687 People Browsing
Related Images
  
 227
  
 4983
  
 1301
Your Opinion
Which is the best fuel for late night cramming?
Votes: 231

Previous poll results: Where do you get your textbooks?