Lesson Worksheet: Active Transport Biology
In this worksheet, we will practice describing different examples of active transport processes that occur across the cell membrane.
Q1:
Which membrane component is required to transport both sodium and potassium ions across the cell membrane against their concentration gradients?
- APhospholipid
- BExtrinsic protein
- CGlycolipid
- DChannel protein
- ECarrier protein
Q2:
Different mechanisms exist for transporting materials across membranes.
Which of the following processes are the reverse of each other?
- AEndocytosis and pinocytosis
- BEndocytosis and phagocytosis
- CPhagocytosis and pinocytosis
- DExocytosis and endocytosis
Which of the given processes require energy?
- Exocytosis
- Phagocytosis
- Pinocytosis
- APhagocytosis only
- BNone of them
- CPhagocytosis and pinocytosis
- DExocytosis only
- EAll of them
Q3:
The figure shows the events that occur during active transport.
Substance X remains bound to the protein, causing a conformational change.
What is X?
- AADP
- BPhosphate
- CGlucose
- DATP
What chemical reaction transfers the energy for active transport?
- AATP ADP + Pi
- BADP ATP + Pi
- CATP + Pi ADP
- DADP + Pi ATP
Q4:
The figure below shows a sodium–potassium pump.
What is the correct sequence of events that happen next?
- AY W V Z X
- BV X Y Z W
- CX Z W V Y
- DY Z W V X
- EW V X Y Z
Q5:
The figure shows three different transport systems.
Which transport system is responsible for active glucose uptake in the brush border of the ileum?
- ASymport
- BUniport
- CAntiport
Q6:
Complete the following: In active transport, substances move their concentration gradient across a membrane, from a region of concentration to a region of concentration.
- Aagainst, high, low
- Bdown, low, high
- Cagainst, low, high
- Ddown, high, low
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