AQA GCSE Biology Unit 3.1

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What is osmosis?

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Which two words describe a situation in which the concentration of water outside the cell is greater than within it?

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Which two words describe a situation in which the concentration of water outside the cell is equal to within it?

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Which two words describe a situation in which the concentration of water outside the cell is less than within it?

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True or false? Active transport does not require an input of energy.

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True or false? Cells which carry out active transport have transport proteins and lots of mitochondria.

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Which of these do plants absorb by active transport?

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True or false? A sports drink can be easily replicated by adding a little salt to dilute orange squash.

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Which part of the lung is responsible for gas exchange?

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Which of these are adaptations of alveoli designed to increase the rate of exchange?

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Which of these processes occur during inhalation?

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Which of these processes occur during exhalation?

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Which type of breathing aid is the iron lung?

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True or false? The surface area of the small intestine is about 200-300 square metres.

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What is a villus?

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What is the name given to cells which close and open the stomata?

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True or false? The surface area of roots is expanded through an absence of root hair cells.

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What is the transpiration stream?

Twenty questions for the first section of Unit 3 in AQA GCSE Biology: Exchange of materials.

AQA GCSE Biology Unit 3.1

What is osmosis?

Which two words describe a situation in which the concentration of water outside the cell is greater than within it?

Which two words describe a situation in which the concentration of water outside the cell is equal to within it?

Which two words describe a situation in which the concentration of water outside the cell is less than within it?

True or false? Active transport does not require an input of energy.

True or false? Cells which carry out active transport have transport proteins and lots of mitochondria.

Which of these do plants absorb by active transport?

True or false? A sports drink can be easily replicated by adding a little salt to dilute orange squash.

Which part of the lung is responsible for gas exchange?

Which of these are adaptations of alveoli designed to increase the rate of exchange?

Which of these processes occur during inhalation?

Which of these processes occur during exhalation?

Which type of breathing aid is the iron lung?

True or false? The surface area of the small intestine is about 200-300 square metres.

What is a villus?

What is the name given to cells which close and open the stomata?

True or false? The surface area of roots is expanded through an absence of root hair cells.

What is the transpiration stream?

True or false? Wilting is a plant mechanism designed to reduce water loss.

What device can be used to measure the rate of transpiration?