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6. Why do we stain onion cells before observing them?
- To make it easier to see because the layers of the onion are see-through
- So that they don't die
- To contrast the onion layers with the chloroplasts
7. Which microscope can be used to see sub-cellular structures?
- Light
- Electron
- Optical
- Resolving
8. What is magnification?
- The ability to produce an image that shows fine detail clearly
- The number of times greater an image of an object is than the actual object
- How detailed an enlarged image is
9. Is mitochondria a sub-cellular structure?
10. What does the cytoplasm do?
- It is where energy release happens
- It is where most chemical reactions happen
- It controls the passage of substances into and out of the cell
- It is where protein synthesis happens
11. What does the nucleus do?
- It contains DNA and enzymes
- It controls the activity of the cell
- It controls the protein synthesis of the cell
- It controls the energy release of the cell
12. Why do onion calls not have chloroplasts?
- Because onions are grown underground, so there would be no point because without light it can't photosynthesize
- Because they are toxic for us to eat
- Because they can't get light through the onion skin
13. What are eukaryotic cells?
- Cells with genetic material enclosed in a nucleus
- Animal and plant cells
- Cells without genetic material enclosed in a nucleus
- Bacteria
14. Which microscope has a higher magnification and a higher resolving power?
- Resolving
- Optical
- Electron
- Light
15. What are the two types of microscope?
- Light and Resolving
- Optical and Resolving
- Optical and Electron
- Light and Electron
16. Is it better to have a higher magnification or a lower magnification to study cells in finer detail?
17. What are the 8 things in a plant cell?
- nucleus, mitochondria, cell membrane, cytoplasm, ribosomes, a cell wall, chloroplasts, a permanent vacuole
- nucleus, mitochondria, cell membrane, cytoplasm, chlorophyll, a cell wall, chloroplasts, a permanent vacuole
- nucleus, mitochondria, cell membrane, cytoplasm, ribosomes, a cell wall, chloroplasts, genetic material
- nucleus, enzymes, cell membrane, cytoplasm, ribosomes, a cell wall, chloroplasts, a permanent vacuole
18. When observing an onion, what is the name of the piece of glass we put on top of the onion?
- A microscope slide
- A cover slip
- A lens
19. What do chloroplasts do?
- It is where protein synthesis happens
- It contains DNA and enzymes
- They absorb light energy to make food
- They produce enzymes
20. What do the mitochondria do?
- It is the site of aerobic respiration - the release of energy
- It is the site of protein synthesis
- It is the site of breathing
- It is the site of anaerobic respiration - the release of energy