Specialised cells

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Leaf cell
Absorbs light energy for photosynthesis; packed with chloroplasts; closely packed cells form continuous layer for absorption of sunlight
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Root hair cell
Absorbs water and mineral ions from the soil; long 'finger-like' process with very thin wall, which gives a large surface area.
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Sperm cell
Fertilises an egg cell; the head contains genetic information and an enzyme to help penetrate the egg cell membrane. The middle section is packed with mitochondria for energy. The tail moves the sperm to the egg.
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Red blood cells
Contains haemoglobin to carry oxygen to the cells; thin outer membrane to let oxygen diffuse through easily. Shape increases the surface area to allow more oxygen to be absorbed efficiently. No nucleus, so the whole cell is full of haemoglobin.
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Diffusion
The movement of particles from an area of high concentration to an area of low concentration through a semi-permeable membrane.
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Other cards in this set

Card 2

Front

Absorbs water and mineral ions from the soil; long 'finger-like' process with very thin wall, which gives a large surface area.

Back

Root hair cell

Card 3

Front

Fertilises an egg cell; the head contains genetic information and an enzyme to help penetrate the egg cell membrane. The middle section is packed with mitochondria for energy. The tail moves the sperm to the egg.

Back

Preview of the back of card 3

Card 4

Front

Contains haemoglobin to carry oxygen to the cells; thin outer membrane to let oxygen diffuse through easily. Shape increases the surface area to allow more oxygen to be absorbed efficiently. No nucleus, so the whole cell is full of haemoglobin.

Back

Preview of the back of card 4

Card 5

Front

The movement of particles from an area of high concentration to an area of low concentration through a semi-permeable membrane.

Back

Preview of the back of card 5

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