QuestionSBA
QuestionChoice
This is an example of osmosis as water is moving from an area of high concentration to an area of low concentration through a semi-permeable membrane.
10005019
d
Water moves down its concentration gradient through a semi-permeable membrane with no carrier proteins involved
QuestionChoice
Glucose is transported via the uniporter protein Glut2 within the gut epithelium. Glut2 is a carrier protein transporting glucose from an area of high concentration to an area of low concentration. Therefore this is an example of facilitated diffusion.
10005016
a
Glucose transported via the Glut2 transporter within the gut epithelium
QuestionChoice
Oxygen is an uncharged molecule which can pass through the lipid bilayer without assistance from any membrane proteins. This is an example of simple diffusion.
10005017
b
Oxygen moves down its concentration gradient through the lipid bilayer with no membrane proteins involved
QuestionChoice
This is an example of active transport as the Na+K+ATPase hydrolyses ATP to ADP and uses ENERGY to expel Na+ outside of the cell from an area of low Na+ concentration to an area of high Na+ concentration.
10005018
c
The Na+K+ATPase transporting Na+ outside of the cell
QuestionChoice
Carbon Dioxide is an uncharged molecule which can pass through the lipid bilayer without assistance from any membrane proteins. This is an example of simple diffusion.
10005020
e
Carbon Dioxide moves down its concentration gradient through the lipid bilayer with no membrane proteins involved
Concept
Chapter
2693
4360
Facilitated vs active diffusion
Topic
181
Structure and Function of Cells
13550
Which one of the following describes facilitated diffusion?
a