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Year 7 Science End of Year Exams > Unicellular and MultiCellular > Flashcards

Unicellular and MultiCellular Flashcards

1
Q

What does Unicellular Mean

A

Organisms that are made up of one cell

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2
Q

What does MultiCellular mean

A

Organisms made up of many cells

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3
Q

Are plants multi or uni

A

Multi

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4
Q

Are animals multi or uni

A

Multi

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5
Q

Is fungi multi or uni

A

Multi

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6
Q

are protists multi or uni

A

Multi can sometimes be uni

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7
Q

are prokrayates multi or uni

A

Multi

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8
Q

What is the biggest living organism

A

Human

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9
Q

What is the smallest living organism

A

cold virus

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10
Q

Do animal cells have a nucleus

A

Yes

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11
Q

Do plant cells have a nucleus

A

Yes

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12
Q

What is an example or a protists

A

Amoeba and Paramecium

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13
Q

What is an example of a prokaryotes

A

Bacteria and blue-green algae

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14
Q

Do prokaryotes have a nucleus

A

No

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15
Q

Do prokaryotes have a cell membrane

A

Yes

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16
Q

Do prokaryotes have mitochondira

A

No

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17
Q

Do prokaryotes have a cell wall

A

Yes

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18
Q

How many cells do we have in our body

A

37 million million

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19
Q

Examples of multicellular

A

cat, daffodil, mouse and dirt

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20
Q

Examples of unicellular

A

polen grain, yeast, dust, bacteria.

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21
Q

What cell doesnt have a nucleus

A

prokaryotes

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22
Q

which cell has multicellular with chloroplast

A

plants

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23
Q

what cell is unicellular and csn sometimes have chloroplasts

A

Protistis

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24
Q

What cells never have cell walls

A

animals

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25
Q

What cell has cell walls but no chloroplasts

A

Fungi

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26
Q

What does Glucose + oxygen equal

A

water + carbpon dioxide + energy

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27
Q

What is the anaroebic respiration equation in general

A

glucose=carbon dioxide + lactic acid + energy

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28
Q

What is areobic respiriation

A

Aerobic respiration occurs with oxygen and releases more energy but more slowly.

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29
Q

What is anaroebic respration

A

Anaerobic respiration occurs without oxygen and releases less energy but more quickly.

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30
Q

What is Respiration

A

Respiration is a chemical reaction which occurs in every one of the cells in the human body. It releases energy stored in glucose and without it, these cells would die.

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31
Q

What is the equation for arobeic respiration

A

glucose + oxygen → carbon dioxide + water

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32
Q

What is the equation for anarobic respiration in human and animal muscles

A

glucose → lactic acid

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33
Q

In which cell component does respiration occur?

A

Mitochondria within the cytoplasm. Genetic information is held within the nucleus. The cell membrane controls what enters and exits the cell.

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34
Q

What are the reactants in aerobic respiration?

A

The reactants in aerobic respiration are glucose and oxygen.

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35
Q

What is produced in anaerobic respiration in humans?

A

Lactic acid is produced in anaerobic respiration in humans. Carbon dioxide and water are produced in aerobic respiration. Glucose is the reactant. Alcohol is produced in fermentation by yeast and bacteria.

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36
Q

What is true of anaerobic respiration compared with aerobic?

A

Anaerobic respiration releases less energy faster.

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37
Q

What is missing for anaerobic respiration to occur?

A

Anaerobic respiration occurs without oxygen.

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38
Q

Which type of respiration releases more energy, more slowly?

A

Aerobic respiration releases more energy but more slowly than anarobic

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39
Q

True or false? Respiration is the same as breathing.

A

False

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40
Q

What can the build-up of lactic acid lead to in muscles?

A

Cramp

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41
Q

True or false? Aerobic means in the presence of air.

A

False

42
Q

How do you know when a bread is made by using yeast

A

Because its risen due to carbon dioxide gases

43
Q

Whats another food or drink made using yeast

A

Beer

44
Q

What conitions is best for yeast reproduction

A

sugar with water at warm temp

45
Q

By what method does fermentation occur in yeast

A

budding

46
Q

What conditions do fungi need to grow and reproduce

A

sugar, warmth and moisture

47
Q

what equation summarises respiration in bacetria

A

glucose- lactic acid

48
Q

what is anaroebic

A

doesnt need oxygen

49
Q

why do bacteria reproduce faster in warmer condiitons

A

enzymes work faster when its warm

50
Q

What effect do yogurt-making bacteria have on milk

A

they make it sour

51
Q

What does a flagellum do

A

moves the cell

52
Q

what does chromosome do

A

contains the information to control the cell

53
Q

where are protocists found

A

in all habitats

54
Q

What do protocists feed on

A

bacteria

55
Q

Where do protocists mov eon

A

tiny little hairs

56
Q

Can protocists sometimes be green

A

yes because of chloroplasts

57
Q

pseudopods help amoebas move

A

because some dont move

58
Q

How do protocists eat cytoplasm

A

it surrounds it then englufs it

59
Q

how do pseupods move

A

they stretch out from the cell and used to pull the rest of th cell towards them

60
Q

What are pseupods for

A

they help amoebas move and they stretch out their cytoplasm

61
Q

why does algae have an eyespot to detect light

A

so they can produce photosynthesis

62
Q

where does algae get its energy from

A

from the light when they photsyntheies

63
Q

what resources do protocists need to grow well

A

moisture and warmth

64
Q

examples of fungi

A

mushrooms yeast and mould

65
Q

do fungi cells have a nucelus

A

Yes

66
Q

do fungi cells have chloroplasts

A

No

67
Q

What is a ringworm

A

A common skin diease thought to be caused by worms

68
Q

How could of David Gruby discover a fungus in the rings.

A

by a microscope

69
Q

how do yeast reproduce

A

use budding

70
Q

what is budding

A

asexual reproduction

71
Q

what is the product with glucose

A

from the digestive system

72
Q

what is the product of carbon dioxide in anaroebic respiration

A

waste product exhaled (poisonnous)

73
Q

what does aroebic respiration release

A

energy for yeast cells and produces more carbon dioxide

74
Q

why do we add yeast when making bread

A

make it rise

75
Q

what is fermentation

A

when yeast respires anaoerobically and is used to make wine and beer

76
Q

why is air kept out of juice mixture

A

make sure it ferments

77
Q

is yeast part of the fungi kingdom

A

yes

78
Q

is glucose a limiting factor for yeast to grow

A

yes

79
Q

what is chromosomal DNA

A

giant loop of DNA containing most of the genetic material

80
Q

what si the Flagella

A

long whip like sctructure that allow the bacteria to move themselves

81
Q

what is teh slime coat

A

layer surroudning the bacteria cell to protect it from enviromental dangers

82
Q

why does a bacteria cell need a flagellum

A

help it move themselves

83
Q

why does a bacteria cell need a slime coat

A

to protect itself from enviromental dangers

84
Q

does a bacteria cell have nucleus

A

no

85
Q

what is the difference between budding and binary fission

A

Cytoplasmic division

86
Q

what is binary fission

A

a type of asexual reproduction

87
Q

does temperature and glucose effect the growth rate of bacteria

A

Yes

88
Q

what is bacteria

A

a member of a large group of unicellular microorganisms which have cell walls but lack organelles and an organized nucleus, including some that can cause disease.

89
Q

is bacteria unicellular

A

yes

90
Q

What do bacteria divide by when they multiply

A

binary fission

91
Q

why does yeast population stop growing

A

limiting factors

92
Q

what is the equation for photosynthesis

A

Carbon dioxide + Water =( SUNLIGHT) Glucose + Oxygen

93
Q

is photosynthesis the same as areobic respiration

A

No because areobic respiration uses oxygen and produces carbon dioxide and photosynthesis uses carbon dioxide and produces oxygen

94
Q

Why do anmials rely on photosyntheis

A

Photosynthesis is really important for animals, including humans because

without photosynthesis we wouldn’t have food because it converts energy from the sun into chemical energy for the food chains.
photosynthesis keeps the levels of oxygen and carbon dioxide in the atmosphere in balance – without it we would very quickly run out of oxygen.

95
Q

what do plants need for photosynthesis

A

carbon dioxide
water
light

96
Q

what do plants make by photosynthesus

A

glucose (sugar)
oxygen

97
Q

what do chloroplasts contain to make them green

A

chlorophyll

98
Q

What is chlorophyll

A

green pigment, present in all green plants and in cyanobacteria, which is responsible for the absorption of light to provide energy for photosynthesis.

99
Q

Where do plants get carbon dioxide from

A

Plants get carbon dioxide from the air through their leaves, and water from the ground through their roots. Light energy comes from the Sun.

100
Q
A

Year 7 Science End of Year Exams (22 decks)

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