biology cells

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What 3 parts do plant cells have that an animal cells don't, and what are their functions?
1. A Cell Wall - Made of cellulose - Strengthens the cell 2. Chloroplasts - (in most but not all plant cells) - Using chlorophyll they absorb sunlight, which is made into food 3. A Permanent Vacuole - (in most but not all plant cells) - Filled with
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What features do ALL living cells include, and what are their functions?
1. A nucleus - Controls what the cell does and contains genetic information. 2. Cell Membrane - Controls movement in and out of the cell 3. Cytoplasm - Where most chemical reactions take place. May have mitochondria in. 4. Ribosomes - Where protei
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What is a specialised cell?
A cell that has a structure adapted to suit the particular job it does.
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Give 3 examples of specialised cells and explain how they are adapted to their job
1. Root hair cells have tiny hair like structure = large surface area for water to move into the cell. Also have a large permanent vacuole - movement of water from soil to root cell. Thirdly, always positioned close to xylem tissue - carries water to
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What do speciallised cells that have been grouped together turn into?
Tissue, which can then turn into organs, which then can become organ systems and eventually make up your whole body
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What factors speed up diffusion?
If there is a big difference in concentration between the two areas, then diffusion happens more quickly. If the temperature is higher, the particles have more energy and move faster, therefore the rate of diffusion is increased.
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What is diffusion?
The net movement of particles from an area of high concentration to an area of low concentration.
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What is 'net movement?'
The overall movement. You work it out by subtracting the number of particles moving out from the number of particles moving in.
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Where does diffusion happen in the body?
Diffusion happens in the cells. Many important substances can move across the membrane of the cell by diffusion, including water, amino acids and glucose.
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Why do some cells have in-folding cell membranes?
To make diffusion easier and more rapid, as it makes a bigger surface area.
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What is osmosis?
The movement of water from a dilute solution to a concentrated solution.
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Card 2

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What features do ALL living cells include, and what are their functions?

Back

1. A nucleus - Controls what the cell does and contains genetic information. 2. Cell Membrane - Controls movement in and out of the cell 3. Cytoplasm - Where most chemical reactions take place. May have mitochondria in. 4. Ribosomes - Where protei

Card 3

Front

What is a specialised cell?

Back

Preview of the front of card 3

Card 4

Front

Give 3 examples of specialised cells and explain how they are adapted to their job

Back

Preview of the front of card 4

Card 5

Front

What do speciallised cells that have been grouped together turn into?

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