BRAINCAKEBulk Transport
Bulk transport is a form of active transport and requires energy.
Molecules too large to pass through channel or carrier proteins such as such as enzymes and peptide hormones can be transported into and out of the cell in vesicles.
Endocytosis involves transport into the cells from the external environment.
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Key terms in this lesson
- lysosome
- A vesicle containing hydrolytic enzymes that breaks down waste material, old organelles and pathogens.
- phagocytosis
- The process by which a cell, such as a white blood cell, engulfs and digests a pathogen or debris.
- vesicle
- A small, fluid-filled sac bound by a single membrane, used for storage and transport within the cell.
- ATP
- Adenosine triphosphate, a nucleotide that acts as the immediate energy source of a cell, releasing energy when hydrolysed to ADP and inorganic phosphate.
- active transport
- The movement of molecules or ions across a membrane, often against their concentration gradient, using ATP and carrier proteins.
More in Plasma Membrane
- Solvents
- Diffusion
- Diffusion Across Membranes
- Facilitated Diffusion
- Active Transport
- Osmosis
- Osmosis in Animal Cells
- Osmosis in Plant Cells
All 18 lessons in Plasma Membrane · All OCR AS-level Biology topics