wiz-icon
MyQuestionIcon
MyQuestionIcon
2
You visited us 2 times! Enjoying our articles? Unlock Full Access!
Question

A plant cell was put into a solution of substance A at a concentration of 200 mmol/L. The rate of uptake into the cell was measured as 5 mmol/minute. When the cell was placed in a solution of substance A at a concentration of 400 mmol/L, the rate of uptake was 10 mmol per minute. When the experiment was repeated with substance B, the rate of uptake was 10 mmol per minute at both concentrations of the substance. Which of the following provides the best explanation of the results?

A
Substance A appears to move into the cell by active transport, and B by diffusion
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
Substance A and B appear to move into the cell by passive transport
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Substance A and B appear to move into the cell by active transport
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Substance A appears to move into the cell by diffusion and substance B by active transport
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A Substance A appears to move into the cell by active transport, and B by diffusion
In the active transport, as the concentration of the solution increases, so does the amount of uptake in a cell. And in diffusion, the amount of the uptake of a substance in a cell is usually not affected by the concentration of the solution.

So, the correct answer is 'Substance A appears to move into the cell by active transport and B by diffusion'.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Process of Recombinant DNA Technology
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon