Which one of the following is active transport ?

Asked in UPSC CDS 2 2019 · Topic: Cell (Plasma Membrane: Fluid Mosaic Model, Structure, and Functions)

1. It is the movement of a substance against a diffusion gradient with the use of energy from respiration.
2. It is the movement of a substance against a diffusion gradient without the use of energy.
3. It is the movement of a substance against a diffusion gradient with the use of energy from photosynthesis.
4. It is the movement of a substance along a diffusion gradient with the use of energy from respiration.

More Biology questions

• Which one of the following is a feature of Membrane ?
• In the following simplified diagram of a plant cell, five parts/organelles are marked from 1 to 5 : [Image of a plant cell diagram with labels 1-5] Which one of the following correctly represents the above parts/organelles ?
• Which of the following features are found in cells of meristematic tissues in plants?
• Which one of the following processes describes the movement of particles or molecules from a region of higher concentration to a region of lower concentration ?
• The movement of a substance against a diffusion gradient with the use of energy is known as
• Which one of the following structures or components is not always present in living cells ?
• Which of the following statements regarding animal cell membrane is correct ?
• Net movement of water from a dilute to a concentrated solution through a selectively permeable membrane is called

All 2,759 Biology questions →