× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
w
3
w
3
e
3
3
r
3
g
2
2
b
2
M
2
V
2
f
2
c
2
Home Q & A Board Biology-Related Homework Help General Biology
New Topic  
dlwldk17 dlwldk17
wrote...
Posts: 8
Rep: 0 0
7 years ago
the question is : Phosphofructokinase is considered to be the enzyme responsible for controlling the rate-limiting step of the glycolytic pathway.  Why would this step be considered rate-limiting step?  Explain with reference to the feedback mechanisms that are occurring in cell respiration.
Read 134 times
2 Replies

Related Topics

Replies
wrote...
#1
Staff Member
7 years ago
Phosphofructokinase (PFK) is the enzyme that controls the third step of glycolysis, the conversion of fructose-6-phosphate (F6P) into fructose-1,6-biphosphate (F1,6BP). It works by transferring a phosphate group from ATP to F6P. This is the slowest reaction in glycolysis and therefore is the rate-limiting step.
Ask another question, I may be able to help!
wrote...
#2
Educator
7 years ago
I've never heard of it as the "slowest".

It's the rate limiting step because it is controlled via negative feedback
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  2950 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 789
  
 2566
  
 3775
Your Opinion
Which is the best fuel for late night cramming?
Votes: 234
Previous poll results: Which country would you like to visit for its food?