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Cells
Junior Cert Science
| Question | Answer |
|---|---|
| All living things are made up of tiny units called what? | Cells |
| Cells can only be seen by using what instrument | Microsocope |
| What are the two main types of cells | Plant and animal |
| What fo you call the structure that surrounds an animal cell | Cell membrane |
| What is the funstion of the cell membrane | It controls what eneters and leaves the cell |
| What do you call the waterty fluid that fills the cell | Cytoplasm |
| What do you call the part that is known as the brain of the cell | Nucleus |
| What do you call the part that temporarily stores food and wastes | Small vacoules |
| In a plant cell what do you call the part that allows a plants to make their own food | Chloroplasts |
| What do you call the green pigment present in the chloroplast | Chlorophyll |
| In a plant cell what do you call the tough structure that surrounds the cell membrane | Cell wall |
| In a plant cell what do you call the large structure that stores water, sugar and wastes | Large vacoule |
| What are the three differences bewteen plant and animal cells | Cell wall, chloroplasts and large vacoule |
| What do you call the part of the microscope that you look through | Eyepiece |
| What do you call the part of the microscope that magnifies an object | Objective lens |
| In the lab how many objectives lenses are present on a microscope | 3 |
| What are the magnification power of the three lenses in the lab | X4, X10, X40 |
| What is the magnification of the eyepiece | X10 |
| What do you call the part od the microscope where you place the slide | Stage |
| What do you call the part of the microscope that moves the objective lens up and down | Focus knob |
| When making a slide to view under a microscope what do you call the small square piece that you place on top of the sample | Cover slip |
| At what angle should you hold the coverslip over that drop of water | 45 degrees |
| Why should you carefully lower the coverslip on top of the sample | To stop air bubbles forming |
| When using onion cells, what stain should you use | Iodine |
| When using animal cheek cells, what stain should you use | Methylene blue |
Created by:
gcu science
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