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Questions and Answers
Which transport mechanism requires the use of energy?
Which transport mechanism requires the use of energy?
- Osmosis
- Simple diffusion
- Facilitated diffusion
- Primary active transport (correct)
What is the collective term for glycolipids and glycoproteins?
What is the collective term for glycolipids and glycoproteins?
- Glycogenolysis
- Glycogen
- Glycocalyx (correct)
- Glycopex
Who proposed the 'fluid mosaic model' of the cell membrane?
Who proposed the 'fluid mosaic model' of the cell membrane?
- Hugh Davson and James Danielli
- Anton van Leeuwenhoek
- Robert Hooke
- S.J. Singer and Garth L. Nicolson (correct)
In which type of transport do substances move from an area of higher concentration to an area of lower concentration?
In which type of transport do substances move from an area of higher concentration to an area of lower concentration?
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What is a concentration gradient?
What is a concentration gradient?
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Study Notes
Transport Mechanisms
- Active transport requires the use of energy.
- Passive transport does not require energy.
Cell Membrane Components
- Glycoconjugates is the collective term for glycolipids and glycoproteins.
Cell Membrane Structure
- The 'fluid mosaic model' of the cell membrane was proposed by Singer and Nicolson.
Transport Types
- Passive transport involves substances moving from an area of higher concentration to an area of lower concentration.
Concentration Gradient
- A concentration gradient is the difference in concentration of a substance from one area to another.
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