Cellular Physiology

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  • Created by: Dynamo123
  • Created on: 07-05-14 14:43

1. Regarding Endocytosis

  • It is an excretory process
  • Only certain cells have ability to perform phagocytosis
  • Phagocytosis involves ingestion of small molecules
  • Phagosomes contain live bacteria
  • Pinocytosis does not require energy
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2. Mitochondria

  • Are produced by ER
  • Contain DNA
  • Are involved in cellular defense mechanism
  • Contain hydrolytic enzymes
  • Are found in each and every cell of body

3. Regarding Nucleus

  • Initiates Ribosome synthesis
  • Shows well defined chromosomes during interphase
  • Nucleolus is surrounded by membrane
  • Replenishes lost cell membrane
  • Size of nuclear pore can be as large as 50 nm

4. Peroxisomes

  • Are involved in breakdown of food particles
  • Synthesize H2O2
  • Are involved in oxidative phosphorylation
  • Are membrane bound organelles
  • Are synthesized by golgi apparatus

5. Regarding Composition of Cell membrane, which is true?

  • Peripheral proteins act as ion channnels
  • Integral proteins act mainly as enzymes
  • Cholesterol has high proportion among cell membrane lipids
  • Cholesterol controls much of fluidity
  • It is rich in carbohydrates

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