Investigating cells

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What does a nucleus do?
Controls all the cell's activities
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What does a cell membrane do?
controls which substances may enter and leave the cell
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What does a cytoplasm do?
Is the site of all chemical reactions
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What is the purpose of staining cells?
So that more structures are seen clearly under the microscope
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What do plant cells also have?
A cell wall,vacuole and chloroplasts
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What does the cell wall do?
It's made of cellulose. It protects the cell contents and gives the plant cell a permanent shape. The cell wall is slightly flexible and will stretch as the plant cell fills the water.
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What does the vacuole do?
It contains water and dissolved minerals.
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What do the chloroplasts do?
They are only found in plant cells that are green. Chloroplasts contain the green pigment chlorophyll. Chlorophyll is used to make food for the plant by a process called photosynthesis.
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What is the definition of diffusion?
Molecules move from where they are in high concentration to where they are in low concentration down a concentration gradient.
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What is the definition of osmosis?
Osmosis is the movement of water from an area of high concentration,to an area of low concentration,down a concentration gradient and through a selectively permeable membrane.
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What is mitosis?
Mitosis is cell division. It's the process whereby one cell divides into two.
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State 3 reasons why living cells need energy
Living cells need energy for cell division,maintenance of body temperature,mechanical work and chemical work.
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What does SAM stand for?
starch-amylace-maltose
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What does G1PPS stand for?
glucose 1 phosphate-phosphorylase-starch
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What does HPCOW stand for?
hydrogen peroxide-catalase-oxygen+water
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What does FLYFAG stand for?
Fat-lipase-fatty acids+glycerol
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Other cards in this set

Card 2

Front

What does a cell membrane do?

Back

controls which substances may enter and leave the cell

Card 3

Front

What does a cytoplasm do?

Back

Preview of the front of card 3

Card 4

Front

What is the purpose of staining cells?

Back

Preview of the front of card 4

Card 5

Front

What do plant cells also have?

Back

Preview of the front of card 5
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