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Year 8 Science > Biology > Flashcards

Biology Flashcards

1
Q

Microscope

A

An instrument for viewing small objects

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2
Q

Cells

A

Building blocks of living things come in different sizes

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3
Q

Light microscope

A

Instrument for viewing very small objects

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4
Q

Electron microscope

A

Much more powerful instrument for viewing very small objects

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5
Q

Monocular

A

Describes a microscope through which the specimen is seen using one eye only

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6
Q

Binocular

A

A microscope with two eyepieces

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7
Q

Stereo

A

Describes an microscope through which specimen is viewing with both eyes

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8
Q

Magnification

A

A number of times the image of an object has been enlarged using lens or lens system

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9
Q

Unicellular

A

I cell singled celled organism

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10
Q

Multicellular

A

2 or more cells

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11
Q

Micrometer

A

One millionth of a meter

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12
Q

Nano meter

A

Billionth of a meter

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13
Q

Nanotechnology

A

Studying and investigating cells and other objects the smallest dimensions

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14
Q

Prokaryotes

A

No men brain bound organelles no nucleus

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15
Q

Eukaryotes

A

Men brain bound organelles has nucleus

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16
Q

Cell membrane

A

Every cell has it like a bag holds every thing in

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17
Q

Cytosol

A

Water

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18
Q

Cytoplasm

A

Cytosol and organelles

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19
Q

Ribosomes

A

Make protein

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20
Q

Metabolism

A

A chemical reaction happening in a organism

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21
Q

Binary vision

A

Reproduction by division of an organism

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22
Q

Animalia

A

Kingdom of organism have cells with a membrane around nucleus but no cell wall

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23
Q

Plants

A

Kingdom of organisms have cells have membrane around nucleus have cell wall

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24
Q

Fungi

A

Kingdom of organism that have mushrooms and mould good for decompose dead and decaying matter

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25
Q

Protoctista

A

The kingdom of organism including algae and protozoan

26
Q

Prokaryotes

A

Kingdom of organism that have a single cell with a nucleus no membrane or cell wall

27
Q

Mitochondria

A

Organelles they supply energy to other parts

28
Q

Cellular respiration

A

The chemical reaction involving oxygen that moves energy in glucose

29
Q

Photosynthesis

A

The food making process in plants that takes place n chloroplasts within cells

30
Q

Chlorophyll

A

The green coloured chemical in plants that absorbs the light energy used in photosynthesis

31
Q

Light microscopes

A

Instrument for viewing very small objects

32
Q

Electron microscopes

A

Instrument for viewing very small objects. Much more powerful than light microscope

33
Q

Monocular

A

Describes and microscope through which the specimen is seen using the one eye only

34
Q

Binocular

A

A microscope with two eye pieces

35
Q

Stereo

A

Describes a microscope through which the specimen is viewed using both eyes

36
Q

Magnification

A

The number of times the image of an objects has been enlarged

37
Q

Nucleus

A

Centeral part of an atom made up of proton s and neutrinos

38
Q

Chromosomes

A

Tiny thread like structure inside he nucleus of a cell

39
Q

DNA

A

Deoxyribonucleic acid the chemical substance found in all living things that encodes the genetic information of an organism

40
Q

Mitosis

A

cell division process that results in new cells with the same number of chromosomes as the original cell

41
Q

Clone

A

Identical copy

42
Q

Cythokinesis

A

The process where the cytoplasm of a cell divides to form two daughter cells

43
Q

Non infectious

A

Disease that cannot be transforming from one organism to another

44
Q

Dus infectious

A

Chemical used to kill bacteria on surfaces and non livings things

45
Q

Antiseptics

A

Mild disinfectant used on body tissue to kill microbes

46
Q

Bactericidal

A

Describes an antiseptic that kills bacteria

47
Q

Bacteriostatic

A

Describes an antiseptic that stops bacteria from Gervinho or dividing but doesn’t kill them

48
Q

phloem

A

type of tissue that transports sugars made in the leaves to other parts of a plant

49
Q

translocation

A

transport of materials, such as water and glucose, in plants

50
Q

Xylem vessels

A

pipelines for the flow of water up plants.

51
Q

Lignin

A

Lignin: a hard substance in the walls of dead xylem cells that make up the tubes carrying water up plant stems. Lignin forms up to 30 per cent of the wood of trees.

52
Q

Stomata

A

small openings mainly on the lower surface of leaves. These pores are opened and closed by guard cells. Singular = stoma.

53
Q

Transpiration system

A

movement of water through a plant as a result of loss of water from the leaves

54
Q

Vascular bundles

A

groups of xylem and phloem vessels within plant stemsbybgugbubyubyubyu

55
Q

Transpiration

A

loss of water from plant leaves through their stomata

56
Q

Guard cells

A

cells on either side of a stoma that work together to control the opening and closing of the stoma

57
Q

Wilt

A

Plant stems and leaves wilt when there is insufficient water in their cells.

58
Q

Vacuoles

A

sacs within a cell used to store food and wastes. Plant cells usually have one large vacuole. Animal cells have several small vacuoles or none at all.

59
Q

Flaccid

A

describes cells that are not firm due to loss of water

60
Q

Turgid

A

describes something that is firm

Year 8 Science (9 decks)

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