| What are the 5 Animal cell Sub-cellular structures? | 1) Nucleus - contains genetic material that controls cells activities
2) Mitochondria - where most reactions for aerobic respiration happens
3) Cytoplasm - gel-like substance where most chemical reactions happen contains enzymes (that control chemical reactions)
4) Cell membrane - Holds cell together, controls what goes in and out
5) Ribosomes - where proteins are made |
| What are the 3 (Additional) Plant Cell sub-cellular structures? | 1) Rigid Cell wall - Made of cellulose, supports & strengthens the cell
2) Chloroplasts - Where photosynthesis happens, contain (green) chlorophyll which absorb light
3) Permanent Vacuole - Contains cell sap, weak solution of sugar & salts |
| What are the 5 Bacteria Cell sub-cellular structures? | 1)Cell membrane
2)Cell wall
3) Cytoplasm
4)Circular DNA strand
5)Plasmid |
| PRACTICAL: (Microscopy) Plant / Animal Cell | PRACTICAL: (Microscopy) Plant / Animal Cell |
| PRACTICAL: How to use a microscope | 1) Clip slide onto stage
2) Select lowest power objective lens
3) Use coarse adjustment knob (to move stage just below objective lens)
4) Look down eye piece, use coarse adjustment knob to lower stage until image's in rough focus
5)Adjust focus w/ fine adjustment knob to get a clear image of whats on slide
6) If you need a greater magnification, swap to a higher objective lens and refocus |
| 1- Function and Features: Sperm Cells | FUNCTION: get male DNA to Female DNA
- long tail and streamlined head to help it swim
- Lots of mitochondria to provide energy
- Enzymes in its head, help it digest into egg cell membrane |
| 2- Function and Features: Nerve Cells | FUNCTION: carry electrical signals from one part of the body to another
- Are long, to carry more distance
-Have branched connections at their ends to connect to other nerve cells |
| 3- Function and Features: Muscle Cells | FUNCTION: contract quickly
- Are long, so have space to contract
- contain lots of mitochondria, to provide energy needed to contract |
| 4- Function and Features: Root Hair Cells | FUNCTION: absorb water and mineral ions
- Are long, giving plant big surface area to absorb water and mineral ions from soil |
| 5- Function and Features: Phloem & Xylem Cells | FUNCTION: transport substances like food and water around the plant
- Are long and joined end to end to form tubes
- Xylem are hollow in centre, so water can flow through
- Phloem have few sub-cellular structures, so food can flow through |
