Cell Membrane Flashcards
1
Q
Explain why facilitated diffusion by GLUT proteins require no metabolic energy?
A
Particles have their own kinetic energy and move down the concentration gradient
2
Q
Explain why glucose cannot pass through a cell membrane through simple diffusion ?
A
Phospholipids act as a bilayer and glucose molecules are too large .
3
Q
Outline the roles of membranes within cells
A
Site of chemical reactions
Provides attachment sites for enzymes
4
Q
What’s passive transport ?
A
Requires no metabolic energy (e.g. simple diffusion )
