EASY
AS and A Level
IMPORTANT
Earn 100
Why can plasmolysis not take place in animal cells?
Important Questions on Cell Membranes and Transport
HARD
AS and A Level
IMPORTANT
There are more mitochondria than average in pancreatic acinar cells. Suggest a reason for this.
EASY
AS and A Level
IMPORTANT
What are the most abundant molecules in the cell surface membranes of plant cells?
EASY
AS and A Level
IMPORTANT
Where are the carbohydrate portions of glycolipid and glycoproteins located in the cell surface membrane?
EASY
AS and A Level
IMPORTANT
In a signalling pathway, which of the following types of protein acts as a switch to release a second messenger?
EASY
AS and A Level
IMPORTANT
One role of cholesterol in membranes is
HARD
AS and A Level
IMPORTANT
Describe fully what will occur if a plant cell is placed in a solution that has a higher water potential than the cell.
Use the following terms in your answer:
(cell wall, freely permeable, partially permeable, cell surface membrane, vacuole, tonoplast, cytoplasm, water potential, turgid, osmosis, protoplast, equilibrium)
HARD
AS and A Level
IMPORTANT
Describe fully what will occur if a plant cell is placed in a solution that has a lower water potential than the cell.
Use the following terms in your answer: (cell wall, freely permeable, partially permeable, cell surface membrane, vacuole, tonoplast, cytoplasm, water potential, incipient plasmolysis, plasmolysed, osmosis, protoplast, equilibrium)
MEDIUM
AS and A Level
IMPORTANT
Copy the table below and place a tick or cross in each box as appropriate.
