Active transport occurs
A. Agairist concentration gradient and requires ATP
B. Against concentration gradient but does not require ATP
C. Along concentration gradient but requires ATP
D. Along concentration gradient but does not require ATP
Answer: Option A
Solution(By Examveda Team)
Active transport occurs against a concentration gradient and requires ATP.It occurs when molecules such as glucose or amino acids move from high concentration to low concentration facilitated by carrier proteins or pores in the membrane.
Primary active transport moves ions across a membrane and creates a difference in charge across that membrane. The primary active transport system uses ATP to move a substance, such as an ion, into the cell, and often at the same time, a second substance is moved out of the cell.
Related Questions on Plant Pathology
Which photosynthetic bacteria possess both PS I and PS II?
A. Purple sulphur bacteria
B. Cyanobacteria
C. Purple nonsulphur bacteria
D. Green sulphur bacteria
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