Topic 1 Cell Biology

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1
what is the function of the nucleus
contains genetic material and controls activities of the cell
2
what is the function of the mitochondria?
where most aerobic reactions take place
3
what is the function of the cytoplasm
gel-like substance where most chemical reactions happen, contains enzymes
4
what is the function of the cell membrane?
holds the cell together and controls what goes in and out of it
5
what is the function of ribosomes
creates protiens in the cell
6
what is the function of the cell wall?
wade of cellulose, supports and strengthens the cell
7
what is the permanent vacuole
contains cell sap, a weak solution of sugar and salts
8
what is the function of the chloroplast?
where photosynthesis takes place, contains a green substance called chlorophyll, which absorbs the light needed to photosynthesise.
9
What are the subcellular structures in a bacterial cell?
Cell wall, Cell membrane, Circular DNA, Plasmids
10
Which microscope uses light and lenses to form an image?
light microscope
11
what does a light microscope use to form an image?
Light and lenses
12
what is an electron microscope?
uses electrons to form an image and has much higher resolution and magnification than a light microscope
13
which type of microscope has a higher megnification
electron
14
which type of microscope has lower resolution
light
15
what is the equation for magnification
image size ➗real size
16
how would you rearrange the equation for image sie?
image size = magnification x real size
17
what is a prokaryote?
small and simple cell, eg bacteria
18
what is a eukaryote?
complex cell, includes all animal and plant cells.
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