IGS Ph KS3 Bi Specialised Cells 1

Which shows a red blood cell?

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Which shows a root hair cell?

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Which shows a leaf palisade cell?

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Which shows a ciliated cell?

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Choose two ways in which root hair cells are specialised.

• they have a large surface area

• they don't contain chloroplasts

• they don't have a cell nucleus

• they only have half the DNA that most cells carry

Root hair cells have a large surface area.

How does that help them function well?

Choose two.

• They can absorb a lot of water quickly.

• They can absorb a lot of nutrients quickly.

• They have more space to hold oxygen molecules.

• They can push mucus and dirt out of the lungs.

Choose two ways in which red blood cells are specialised.

• they have a large surface area

• they don't contain chloroplasts

• they don't have a cell nucleus

• they only have half the DNA that most cells carry

Red blood cells have a large surface area.

How does that help them function well?

• A lot of oxygen can diffuse into them.

• They can absorb a lot of nutrients quickly.

• They have more space to hold oxygen molecules.

• They can push mucus and dirt out of the lungs.

Most cells contain a cell nucleus.

Red blood cell do not contain a nucleus.

How does that help them function well?

• A lot of oxygen can diffuse into them.

• They can absorb a lot of nutrients quickly.

• They have more space to hold oxygen molecules.

• They can push mucus and dirt out of the lungs.

Leaf palisade cells have even more chloroplasts than other plant cells.

How does that help them function well?

• A lot of oxygen can diffuse into them.

• They can absorb a lot of nutrients quickly.

• They can absorb a lot of sunlight and produce a lot of food (carry out photosynthesis at a high rate).

• They can push mucus and dirt out of the lungs.