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Year 8 Science > Biology > Flashcards

Biology Flashcards

(60 cards)

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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
Protoctista
The kingdom of organism including algae and protozoan
26
Prokaryotes
Kingdom of organism that have a single cell with a nucleus no membrane or cell wall
27
Mitochondria
Organelles they supply energy to other parts
28
Cellular respiration
The chemical reaction involving oxygen that moves energy in glucose
29
Photosynthesis
The food making process in plants that takes place n chloroplasts within cells
30
Chlorophyll
The green coloured chemical in plants that absorbs the light energy used in photosynthesis
31
Light microscopes
Instrument for viewing very small objects
32
Electron microscopes
Instrument for viewing very small objects. Much more powerful than light microscope
33
Monocular
Describes and microscope through which the specimen is seen using the one eye only
34
Binocular
A microscope with two eye pieces
35
Stereo
Describes a microscope through which the specimen is viewed using both eyes
36
Magnification
The number of times the image of an objects has been enlarged
37
Nucleus
Centeral part of an atom made up of proton s and neutrinos
38
Chromosomes
Tiny thread like structure inside he nucleus of a cell
39
DNA
Deoxyribonucleic acid the chemical substance found in all living things that encodes the genetic information of an organism
40
Mitosis
cell division process that results in new cells with the same number of chromosomes as the original cell
41
Clone
Identical copy
42
Cythokinesis
The process where the cytoplasm of a cell divides to form two daughter cells
43
Non infectious
Disease that cannot be transforming from one organism to another
44
Dus infectious
Chemical used to kill bacteria on surfaces and non livings things
45
Antiseptics
Mild disinfectant used on body tissue to kill microbes
46
Bactericidal
Describes an antiseptic that kills bacteria
47
Bacteriostatic
Describes an antiseptic that stops bacteria from Gervinho or dividing but doesn't kill them
48
phloem
type of tissue that transports sugars made in the leaves to other parts of a plant
49
translocation
transport of materials, such as water and glucose, in plants
50
Xylem vessels
pipelines for the flow of water up plants.
51
Lignin
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
Stomata
small openings mainly on the lower surface of leaves. These pores are opened and closed by guard cells. Singular = stoma.
53
Transpiration system
movement of water through a plant as a result of loss of water from the leaves
54
Vascular bundles
groups of xylem and phloem vessels within plant stemsbybgugbubyubyubyu
55
Transpiration
loss of water from plant leaves through their stomata
56
Guard cells
cells on either side of a stoma that work together to control the opening and closing of the stoma
57
Wilt
Plant stems and leaves wilt when there is insufficient water in their cells.
58
Vacuoles
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
Flaccid
describes cells that are not firm due to loss of water
60
Turgid
describes something that is firm

Year 8 Science (9 decks)

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