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GCSE Biology > B2 - Transport In Cells > Flashcards

B2 - Transport In Cells Flashcards

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1
Q

Diffusion is the movement from an area of ____ to ______ concentration.

A

High to low

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2
Q

Will diffusion happen faster or slower at a LOWER temperature?

A

Slower

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3
Q

Which state can diffusion NOT happen in?

A

Solid

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4
Q

What process allows oxygen to be transferred into the blood from the lungs?

A

Diffusion

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5
Q

Will diffusion happen faster or slower if the diffusion distance is DECREASED?

A

Faster

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6
Q

What is meant by a partially permeable membrane?

A

A membrane which will only allow certain substances through that a small enough to fit through the gaps

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7
Q

Which substance moves during osmosis?

A

Water

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8
Q

What has the highest concentration of water in osmosis?

A

0M sugar solution

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9
Q

What is the independent variable in the osmosis practical?

A

Concentrations of salt or sugar solution

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10
Q

What do we say when particles have been evenly spread out?

A

They have reached an equilibrium

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11
Q

What is the dependent variable in the osmosis practical? There are two possible answers.

A

Change in mass of the potato

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12
Q

Why did we calculate the percentage change in mass?

A

So that we can compare the results

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13
Q

Active transport needs energy. Which part of the cell releases most of this energy?

A

Mitochondria

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14
Q

Give one substance that plants absorb by active transport.

A

Minerals

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15
Q

Active transport involves movement of a substance …

A

from an area of low concentration to an area of high concentration

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16
Q

Suggest why epithelial cells have many mitochondria.

A

To provide energy

17
Q

What is needed for active transport to occur?

A

Energy

18
Q

Active transport happens in plants in the what?

A

Root hair cells

19
Q

What will happen to a palisade (leaf cell) when water enters?

A

The volume of the cytoplasm and vacuole will increase, the cell will become turgid from filling with water

20
Q

Which structure prevents plant cells from bursting?

A

Cell wall

GCSE Biology (14 decks)

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