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Biology Unit 2 > 2.1 > Flashcards

2.1 Flashcards

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1
Q

Name the parts of an animal cell.

A 
Cell membrane
Cytoplasm 
Nucleus 
Mitochondria 
Ribosomes
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2
Q

What is the function of cell membrane?

A

Controls the molecules that can enter and leave the cell

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3
Q

What is the function of a nucleus?

A

Contains DNA which controls the activities of the cell

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4
Q

What is the function of cytoplasm?

A

Contains enzymes to carry out reactions in the cell

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5
Q

What do mitochondria do?

A

Release energy by respiration

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6
Q

What do ribosomes do?

A

Carry out protein synthesis to make proteins

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7
Q

What are the parts of a plant cell?

A 
Cell membrane 
Cytoplasm 
Nucleus
Ribosomes 
Mitochondria

Cell wall
Vacuole
Chloroplasts

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8
Q

What do plant cells do to aid photosynthesis?

A

Trap light

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9
Q

What do chloroplasts do?

A

Absorb light energy to make food (photosynthesis)

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10
Q

What is the cell wall made of? What does it do?

A

Cellulose

Strengthens the cell

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11
Q

Why does a plant need a cell wall and an animal cell doesn’t?

A

A plant doesn’t have a skeleton

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12
Q

What in is the permanent vacuole?

A

Cell sap

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13
Q

What cell structure is an algae structure the same as?

A

Plant cell

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14
Q

What are flagella for?

A

Aids movement.

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15
Q

How does flagella help algae cells?

A

Helps it swim towards the light

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16
Q

What are all living thins made up of?

A

Cells

17
Q

What is special about yeast and bacterial cells?

A

Single-celled organisms

18
Q

What are the parts of a yeast cell?

A

Nucleus
Cell membrane
Cell wall
Cytoplasm

19
Q

What are the parts of a bacteria cell?

A

Cell membrane
Cell wall
Cytoplasm
Strand of DNA

20
Q

What doesn’t a bacteria cell not have?

A

Nucleus

21
Q

What is meant by a specialised cell?

A

They have special features so they can carry out their job

22
Q

What is the function of a sperm cell?

A

Swim to egg

23
Q

What special features does a sperm cell have? What do they do?

A

Tail- swimming
Streamlined - helps movement
Mitochondria- respire and release energy
Enzymes- digest egg wall

24
Q

What is the function of a red blood cell?

A

Carry oxygen from lungs to cells

25
Q

What special features does a red blood cell have? What do they do?

A

Haemoglobin- sticks to oxygen
Large S.A- increase oxygen diffusion
No Nucleus-extra room for haemoglobin

26
Q

What is the function of a nerve cell?

A

Send electrical impulses around body

27
Q

What is the function of a palisade cell?

A

Absorb light for photosynthesis

28
Q

What is the main feature of a palisade cell? What’s it for?

A

Chloroplasts- absorb light

29
Q

What is the function of a root-hair cell?

A

Absorb water and minerals from the soil .

30
Q

What features does a root-hair cell have?

A

Long hair-increase S.A

No chloroplasts

31
Q

What does diffusion mean?

A

Movements of molecules from a high concentration to a low concentration.

32
Q

What do cells need to be able to release energy in respiration?

A

Oxygen

33
Q

How does oxygen enter cells

A

By diffusion

34
Q

When is diffusion fastest?

A

When there’s a bigger concentration difference

35
Q

What must dissolved substances pass through to enter cells?

A

Cell membrane

36
Q

What does net movement mean?

A

The total movement of a substance

Biology Unit 2 (8 decks)

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