Top answers

how is a proton gradient set up and maintained across the inner mitochondrial membrane?

H+ ions and electrons released from NADH and FADH2,on to the inner mitochondrial membrane. electrons enter electron transport chain, and energy released from transfer of electrons is used to pump H+ ions int...
RP
Answered by Rohan P. • Biology tutor
23671 Views

How does the sliding filament theory work?

A nerve impulse in the sarcoplasmic reticulum causes calcium ions to move out of it into the muscle cells where it binds to tropmyosin/troponin causing it to move and reveal the actin filament. The myosin ca...
CK
Answered by Charlotte K. • Biology tutor
8499 Views

What is meant by the "fluid-mosaic" model of cell membrane structure?

The cell membrane consists of a double layer of phospholipids, with proteins floating in it. Phospholipids are a type of molecule with a phosphate head, and fatty tails, which form a double layer around the ...
HH
Answered by Harriet H. • Biology tutor
30192 Views

Discuss the products of glycolysis?

NET 2 ATP and 2 molecules of 3 carbon Pyruvate
IB
Answered by Imogene B. • Biology tutor
4414 Views

Describe and explain the mechanism behind the specificity of enzyme reactions.

An enzyme is a protein that catalyses a reaction. That means they perform the reaction without being used up. Enzymes are very specific. Typically only one enzyme with catalyse one kind of reaction. This is ...
SB
Answered by Sam B. • Biology tutor
6128 Views