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Ms summer exam > summer exam > Flashcards

summer exam Flashcards

1
Q

gamete

A

sex cell

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2
Q

fertilisation

A

sex cells fuse together

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3
Q

zygote

A

a fertilised cell - cell straight after fertilisation

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4
Q

Name 3 organelles in a plant cell that you don’t find in an animal cell.

A

cell wall
chloroplast
permanent vacuole

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5
Q

Protein is needed for

A

growth and repair

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6
Q

Carbohydrates are needed for

A

energy

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7
Q

Name a kingdom

A

you can choose from animals, plants, fungi, prokaryotes (bacteria) and protoctists (amoeba, euglena)

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8
Q

Diffusion is

A

the movement of a substance from an area of high concentration to an area of low concentration.

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9
Q

Diffusion happens in

A

liquids and gases because their particles move randomly from place to place.

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10
Q

The lungs are adapted to diffusion by

A

having a large surface area
moist, thin walls
lots of blood vessels close by

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11
Q

What is the word equation for aerobic respiration

A

glucose + oxygen -> carbon dioxide + water

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12
Q

What is the equation for anaerobic respiration (fermentation)

A

glucose -> ethanol + carbon dioxide

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13
Q

What is the word equation for photosynthesis

A

carbon dioxide + water - > glucose + oxygen

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14
Q

How do you test for sugar

A

Benedict’s test - Blue to red

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15
Q

element

A

A substance made up of one kind of atom only

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16
Q

compound

A

A substance made up of two or more different elements chemically combined

17
Q

mixture

A

A substance made up of two or more different substances that can be separated by physical methods

18
Q

Word equation for combustion - burning

A

Fuel (methane) + oxygen - > carbon dioxide + water

19
Q

Methane is made of carbon and hydrogen, so is known as a

A

hydrocarbon

20
Q

sodium hydroxide + hydrochloric acid

A

sodium chloride + water

21
Q

Melting

A

solid to liquid - particles stay close together but start moving around each other

22
Q

Boiling (evaporating)

A

liquid to gas - particles become much further apart and move quickly in all directions

23
Q

What happens to water when it freezes

A

water is unusual and expands when it freezes

24
Q

What is displacement?

A

A more reactive metal will displace a less reactive metal from its compounds
magnesium + copper sulfate - > magnesium sulfate + copper

25
Q

To make an investigation reliable

A

repeat the experiment

26
Q

You can make your results more accurate by

A

improving your method

27
Q

Independent variable

A

The variable that you change

Ms summer exam (1 decks)

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