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N5 biology revision > Cell Transport > Flashcards

Cell Transport Flashcards

UNIT 1

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1
Q

What does a animal cell contain?

A

Cytoplasm, nucleus, cell membrane, mitochondria, ribosomes

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2
Q

What does a plant cell contain?

A

Cytoplasm, mitochondria, ribosomes, cell membrane, cell wall, chloroplasts, vacuole, nucleus

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3
Q

What is the function of the cell membrane?

A

Allows exit/entry of substances in/out of the cell

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3
Q

What is the function of the nucleus?

A

Controls all cell activity

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4
Q

What is the function of the cytoplasm?

A

Site of chemical reactions

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5
Q

What is the function of the cell wall?

A

Gives the cell support and prevents it from bursting

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6
Q

What is the function of the vacuole?

A

Holds cell sap

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7
Q

What is the function of the chloroplasts?

A

Site of photosynthesis

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8
Q

What is the function of the mitoconria?

A

Site of aerobic respiration

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9
Q

What is the function of ribosomes?

A

Site of protein synthesis

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10
Q

What are plant cells made from?

A

Cellulose

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11
Q

What is the cell membrane made from?

A

Phospholipids and proteins

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12
Q

What functions do the proteins in the membrane carry out?

A

pores, receptors, channels, pumps

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13
Q

Is the cell membrane selectively permeable?

A

Yes

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14
Q

What can transport of ions or molecules into the cell either be?

A

Passive or active transport

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15
Q

What is passive transport?

A

The movement of molecules down a concentration gradient and does not require energy

16
Q

What are example of passive transport?

A

Diffusion and Osmosis

17
Q

What is diffusion?

A

The movement of molecules down a concentration gradient from a higher concentration to a lower concentration

18
Q

What is a concentration gradient?

A

The difference in concentration between regions

19
Q

What are 2 examples of molecules that enter a cell by diffusion?

A

Oxygen and glucose

20
Q

What are 2 examples of molecules that leave a cell by diffusion?

A

Carbon dioxide and wastes

21
Q

What is osmosis?

A

The movement of water molecules from a region of high water concentration to a region of lower water concentration, down a concentration gradient), through a selectively permeable membrane

22
Q

What does it mean if a plant cell has become plasmolysed?

A

A plant cell that has lost so much water from its vacuole that the cell membrane has pulled away from the cell wall

23
Q

What does it mean if a plant cell has become turgid?

A

The plant cell has gained so much water that the cell has swolen

N5 biology revision (11 decks)

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