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| Question | Answer |
| The units in which cells are measured | Micrometres |
| Cytoplasm | Liquid surrounding the nucleus including organelles |
| Cytosol | The liquid surrounding the nucleus, not including organelles |
| Protoplasm | All living parts of the cell including the nucleus |
| Stain for animal cells | Methylene blue |
| Stain for plant cells | Iodine |
| Component of plant cell wall | Celulose |
| What does the vacuole contain? | Cell sap - salts, pigments, sugars |
| Function of the cell wall | Support |
| Cell membranes are composed of | Proteins, and phospholipids |
| Permeability of cell membranes | Semi or selectively permeable |
| Transport using energy | Active transport |
| Functions of cell membranes | The surface of the cell membrane contains receptors that receive chemical messages from other parts of the body and bring them to the cell Membranes retain the cell contents Membranes control what enters and leaves the cell Membranes provide support Membranes are semi-permeable in that they allow some substances to enter the cell freely, and prevent others from entering at all |
| DNA | Deoxyribonucleic Acid |
| Number of chromosomes in humans | 46 |
| Live plant cells without a nucleus | Phloem sieve tube cells |
| Live animal cells without a nucleus | Red blood cells |
| Where are ribosomes made? | Nucleolus |
| Mitochondria | Energy supplier, aerobic astage of respiration, reproduction by means of binary fission |
| Chloroplasts | Where photosynthesis takes place, contain chlorophyll (green pigment) |
| Light stage of photosynthesis | Granum |
| Dark stage of photosynthesis | Stroma |
| Permeability of cell walls | Fully permeable |
| Function of ribosomes | Protein synthesis |
| Prokaryotes | No true nucleus or membrane-enclosed organelles |
| Eukaryotes | True nucleus and membrane-enclosed organelles |
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