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Junior Cert Science

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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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  


   


 
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Created by: Teacher Amrein