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KS3 Science > Cells and Respiration > Flashcards

Cells and Respiration Flashcards

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Biology 101 flashcards
1
Q

What is an organism?

A

An organism is a living thing

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2
Q

What piece of equipment would you use to look at a cell?

A

A microscope

cells are very small

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3
Q

Name the 4 components which occur in animal and plant cells

A
  • Nucleus
  • Cytoplasm
  • Cell Membrane
  • Mitochondria
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4
Q

Name the 3 components which occur in a plant cell but not in an animal cell

A
  • Cell Wall
  • Vacuole
  • Chloroplasts
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5
Q

What is the function of the nucleus?

A

The nucleus controls what the cell does

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6
Q

What is the function of the Cytoplasm?

A

The Cytoplasm is a sort of jelly that fills the cell and it is where most of the chemical reactions in the cell happen

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7
Q

What is the function of the Cell Membrane?

A

The Cell Membrane is a thin skin around the cell which holds the cell together and controls what goes in and out

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8
Q

What is the function of the Mitochondria?

A

These are where aerobic respiration happens

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9
Q

What is the function of the Cell Wall?

A

This is a stiff outer layer around the cell membrane which supports the cell

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10
Q

What is a Vacuole?

A

A Vacuole is filled with a liquid called cell sap which contains sugar and salts

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11
Q

What is the function of the Chloroplasts?

A

These are where photosynthesis happens

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12
Q

What are Multicellular organisms?

A

Organisms that are made up of lots of cells. Animals and plants are multicellular organisms.

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13
Q

True or False:-

Plants are multicellular organisms.

A

True

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14
Q

What are organisms that only have one cell called?

A

They are called Unicellular organisms.

Examples are Amoeba or Euglena

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15
Q

What do a group of similar cells working together make?

A

A tissue.

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16
Q

What do a group of different tissues working together make?

A

An organ

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17
Q

What do a group of organs working together make?

A

An organ system.

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18
Q

What is Diffusion?

A

Diffusion is where stuff moves from where there is a lot of it to where there is less of it.

An example is where glucose from outside a cell moves through the cell membrane into the cell.

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19
Q

Give an example of diffusion.

A

When glucose from outside a cell moves through the cell membrane into the cell.

20
Q

True or False:-

Chloroplasts are found in animal cells.

A

False

21
Q

True or False:-

Multicellular organisms only have 1 cell.

A

False

22
Q

True or False:-

A group of similar cells working together make a Tissue.

A

True

23
Q

True or False:-

Diffusion is where stuff moves from where there is lots of it to somewhere where there is less of it

A

True

24
Q

What happens in a chemical reaction?

A

In a chemical reaction, one or more ‘old’ substances get changed into new ones,

25
Q

What are the ‘old’ substances in a chemical reaction called?

A

Reactants

26
Q

What are the new substances formed by a chemical reaction called?

A

Products

27
Q

True or False:-

Respiration is a chemical reaction.

A

True

28
Q

True or False:-

Respiration happens in every cell.

A

True

29
Q

What happens during respiration?

A

Respiration changes glucose (a sugar) into other substances. This releases energy.

This energy is then used for just about everything.

30
Q

Give some examples of what the energy released by respiration might be used for.

A
  • building protein
  • using your muscles
  • keeping warm
31
Q

What is Aerobic Respiration?

A

Aerobic Respiration is respiration using oxygen.

32
Q

True or False:-

Aerobic Respiration is respiration using Nitrogen.

A

False

33
Q

True or False:-

Aerobic Respiration is respiration using oxygen.

A

True

34
Q

Where does Aerobic Respiration happen?

A

Aerobic Respiration happens in the Mitochondria of animal and plant cells.

35
Q

True or False:-

Aerobic Respiration happens in the cell nucleus.

A

False

36
Q

True or False:-

Aerobic Respiration happens in the mitochondria of animal and plant cells.

A

True

37
Q

What happens during Aerobic Respiration?

A

In Aerobic Respiration, glucose and oxygen react to produce carbon dioxide and water.

This reaction releases lots of energy.

38
Q

What is Anaerobic Respiration?

A

Anaerobic Respiration is respiration without oxygen.

39
Q

True or False:-

Anaerobic Respiration is respiration with oxygen,

A

False

40
Q

True or False:-

Anaerobic Respiration is respiration without oxygen.

A

True

41
Q

True or False:-

Anaerobic Respiration produces more energy than Aerobic Respiration.

A

False

42
Q

True or False:-

Anaerobic Respiration produces less energy than Aerobic Respiration.

A

True

43
Q

In Humans, when does Anaerobic Respiration take place?

A

During hard exercise.

44
Q

What substance does Anaerobic Respiration produce in humans?

A

Lactic acid.

45
Q

What does Anaerobic Respiration produce in Microorganism such as Yeast?

A

Carbon Dioxide and Ethanol (alcohol)

46
Q

What is Fermentation?

A

Fermentation is when Anaerobic Respiration produces ethanol.

47
Q

Name one product which Fermentation is used to produce.

A

Beer

KS3 Science (2 decks)

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