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The cell
The Cell A&P for massage
| Question | Answer |
|---|---|
| Define a cell | It is the smallest unit of living matter capable of independent existance |
| Name 2 functions of the Nucleus of a cell | 1. Synthesizes,protects & replicates DNA2. Controls cell division |
| What is the function of the Nucleolus & Plasma membrane | Nucleoulus-Synthesizes the rRNA Plasma Membrane - Protects the cell |
| What is the function of Endoplasmic reticulum and a Ribosome? | Endoplasmic Reticulum- rER- Synthesis of export proteins sER- Synthesis of steroid hormonesRibosomes - site of protein synthesis for internal external use |
| What is the function of the Mitochondrion? | Major energy source |
| What is the function of the Golgi complex and a lysosome? | Golgi complex - to package secretory products and transport to cell surface and also forms lysosomesLysosomes - Destroy foreign substances eg bacteria |
| What is the functional difference between Microtubules & Microfilaments? | Microtubules-Cytoskeleton maintenance,acts as a guidance system in the intracellular transportMicrofilament-(Contraction), Is contraction of the Actin filaments which aid cell absortion |
| What is the functional difference between a lipid & a mucous droplet? | Lipid-Storage of Triglycerides, energy reserve Mucous Droplet- Precursor of mucin when hydrated forms mucus, a lubricant to aid the passage of food and faeces along the gut |
| What are Microvilli and what is their function? | are cylindrical, membrane-bound projections of the cytoplasm - Function- Increases surface area of the cell |
| What are Cilia what is their function? | Hair like projections- specialised in propelling mucus & other structures over the surface area of the cell via rythmic wavelike oscillations |