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science > yr8 and yr7 topics revision > Flashcards

yr8 and yr7 topics revision Flashcards

1
Q

where are protein enzymes found?

A

stomach

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2
Q

what is another name for lipids?

A

fats

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3
Q

Sulphuric acid + copper oxide → _______ + _______

A

Sulphuric acid + copper oxide → copper sulphate + water

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4
Q

if B = brown eyes and b= blue eyes, what is the possibility of this baby having brown eyes?
dad = Bb mum= bb

A

50%

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5
Q

what is the symbol equation for reduction of methane?

A

CH4​+2O2​→CO2​+2H2​O

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6
Q

what is an allele?

A

a type of gene

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7
Q

where do the lines of a magnetic field point to?
A: north
B: south

A

B: south

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8
Q

what is respiration?

A

a chemical reaction that releases energy in an organism

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9
Q

true or false: rodents are pollinators

A

true

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10
Q

what are 3 uses of a permanent magnet?

A

fridge magnets, phone cases, motors, headphones, sensors

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11
Q

if B = brown eyes and b= blue eyes, what is the possibility of this baby having brown eyes?
dad = Bb mum= Bb

A

75%

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12
Q

what is ‘Y’ in sex cells

A

male

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13
Q

when you inhale, you breathe in 21% oxygen and when you exhale, you breathe out 18% oxygen. What is that 3% oxygen used for?

A

respiration

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14
Q

where are lipase enzymes found?

A

small and large intestines

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15
Q

what is a compound?

A

a group of more than one different particles

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16
Q

if there are 3 amps in a parallel circuit, amp 2 being on the parallel line with 2 bulbs in front with a resistance of 0.40, what are the other 2 amps’ resistance?

A

Amp 1 = 0.40
Amp 3 = 0.40

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17
Q

what part of the cell are chromosomes stored?

A

the nucleus

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18
Q

Copper + water → _______ + _______

A

Copper hydroxide + hydrogen

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19
Q

what is an element?

A

a group or single particle that are all the same particles

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20
Q

give examples of protein that are not meat

A

beans, peas, eggs, lentils

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21
Q

what is a base

A

a substance that neutralises acids

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22
Q

what is a vertebrate?

A

an animal that has a spine/back bone

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23
Q

what are platelets used for?

A

forming blood clots to prevent bleeding

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24
Q

what is aerobic respiration?

A

the process when glucose reacts with oxygen

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25
Q

what’s a gamete?

A

a sperm or egg cell

26
Q

what is an atom?

A

a single particle

27
Q

what is the symbol equation for reduction of ammonia?

A

4NH3

28
Q

how do you test for fat?

A

grab the substance and place it on filter paper and leave it to dry. If there is a stain around the substance then it is fat otherwise it is not

29
Q

how do you test for glucose?

A

using Benedict’s solution, if the substance turns orange then it is glucose otherwise it’s not

30
Q

what is a molecule?

A

more than one particle

31
Q

what are the 4 main components of blood?

A

plasma, red blood cells, white blood cells and platelets

32
Q

what lipids broken down into?

A

fatty acids and glycerol

33
Q

copper + oxygen → ________ + _______

A

copper + oxygen → copper oxide

34
Q

what is protein used for when it is broken down by protease?

A

muscle growth and tissue repair

35
Q

what are lipids used for when they are broken down by enzymes?

A

insulation

36
Q

what does carbohydrates break down into?

A

sugar

37
Q

what is an example of an invertebrate?

A

snail, prance mantis, sea urchin, star fish, snake, worm

38
Q

what is a base called if it dissolves in water

A

alkali

39
Q

Hydrochloric acid + magnesium carbonate → _______ + _______ + _______

A

Hydrochloric Acid + Magnesium Carbonate → Magnesium Hydrate + Carbon Dioxide + Water

40
Q

what enzymes are lipids broken by?

A

lipase enzymes

41
Q

how do you test for starch?

A

using iodine, if the substance turns transparent blue then it’s starch otherwise it is not

42
Q

what is ‘X’ in sex cells

A

female

43
Q

which enzyme is amylase described as?

A

carbohydrase

44
Q

where are protease enzymes found in?

A

the stomach

45
Q

Magnesium + hydrochloric acid → _______ + _______

A

Magnesium + hydrochloric acid → magnesium chloride + hydrogen

46
Q

what is a gene?

A

part of the DNA that defines how you look

47
Q

how many chromosomes are in one sperm cell?

A

23

48
Q

where are carbohydrase enzymes found?

A

mouth

49
Q

give some examples of acids

A

Vinegar, lemon, fizzy drinks

50
Q

what is plasma in blood?

A

the liquidy part of blood, contains various substances

51
Q

what is a fertilised egg called?

A

a zygote

52
Q

stomach acids are in the process of breaking down protein in the stomach but what are they used for?

A

getting rid of harmful micro organisms on the food

53
Q

what if a gene is heterozygous?

A

2 of a different gene e.g. Bb

54
Q

what is a pollinator?

A

an animal or insects that do seed dispersal

55
Q

what does protein break down into?

A

amino acids

56
Q

how do you test for protein?

A

using the Buiret test, if the substance turns purple then it is protein otherwise it is not

57
Q

what is in between the ribs to help it move?

A

intercostal muscles

58
Q

what is an amphibian?

A

a vertebrate that can live in and out of water e.g. frogs

59
Q

what is the order of what an organism (human) is made of?

A

specialised cell, tissue, organ, system, organism

60
Q

what is the symbol equation for combustion

A

CH4 + 2O2 → CO2 + 2H2O

61
Q

what if a gene is homozygous?

A

2 of the same gene e.g. BB or bb

science (11 decks)

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