Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Year 8 science > cells > Flashcards

cells Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

an instrument for viewing small objects

A

microscope

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

the smallest unit of life. Cells are the building blocks of living things. There are many different sized and shaped cells in animals and plants, as well as single-celled organisms.

A

cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

instrument for viewing very small objects. A light microscope can magnify things up to 1500 times.

A

light microscopes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

instrument for viewing very small objects. An electron microscope is much more powerful than a light microscope and can magnify things up to a million times.

A

electron microscopes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

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

A

monocular

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

a microscope with two eyepieces, so you use both eyes to look at the object

A

binocular

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

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

A

stereo

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

the number of times the image of an object has been enlarged using a lens or lens system. For example, a magnification of two means the object has been enlarged to twice its actual size.

A

magnification

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

describes an organism having only one cell

A

unicellular

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

having many cells. Most plants and animals are multicellular.

A

multi cellular

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

a length of one millionth of a metre

A

micrometre

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

a unit of measurement equal to one billionth of a metre

A

nanometre

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

a rapidly developing field that includes studying and investigating cells and other objects of the smallest dimensions

A

nanotechnology

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

organism classified as belonging to the Prokaryotae kingdom

A

Prokaryotae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

member of the group of organisms that has a membrane around the nucleus in each of their cells

A

eukaryote

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

structure that encloses the contents of a cell and allows the movement of some materials in and out

A

cell- membrane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

the fluid found inside cells

A

cytosol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

small structures within a cell in which proteins such as enzymes are made

A

ribosomes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

the jelly-like material inside a cell. It contains many organelles such as the nucleus and vacuoles.

A

cytoplasm

20
Q

the chemical reactions occurring within an organism that enable the organism to use energy and grow and repair cells

A

metabolism

21
Q

reproduction by the division of an organism (usually a single cell) into two new organisms

A

binary fission

22
Q

the kingdom of organisms that have cells with a membrane around the nucleus, but no cell wall, large vacuole or chloroplasts

A

Animalia

23
Q

the kingdom of organisms that have cells with a membrane around the nucleus, cell wall, large vacuole and chloroplasts, commonly called plants

A

Plantae

24
Q

the kingdom of organisms, such as mushrooms and moulds, that help to decompose dead or decaying matter

A

fungi

25
Q

the kingdom of organisms, including algae and protozoans, that do not fit into other groups

A

Protoctista

26
Q

the kingdom of organisms that consist of single cells with a nucleus not surrounded by a membrane or a cell wall, commonly called bacteria

A

Prokaryotae

27
Q

small rod-shaped organelles that supply energy to other parts of the cell. They are usually too small to be seen with light microscopes. Singular = mitochondrion

A

mitochondria

28
Q

oval-shaped organelle found only in plant cells. Chloroplasts contain the pigment chlorophyll. They are the ‘factories’ in which carbon dioxide and water are changed by sunlight and water into food by the process of photosynthesis.

A

chloroplasts

29
Q

the chemical reaction involving oxygen that moves the energy in glucose into the compound ATP. The body is able to use the energy contained in ATP

A

cellular respiration

30
Q

the food-making process in plants that takes place in chloroplasts within cells. The process uses carbon dioxide, water and energy from the sun.

A

photosynthesis

31
Q

the green-coloured chemical in plants that absorbs the light energy used in photosynthesis to make food from carbon dioxide and water

A

chlorophyll

32
Q

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

A

phloem

33
Q

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

A

translocation

34
Q

pipelines for the flow of water up plants. They are made up of the remains of dead xylem cells fitted end to end with the joining walls broken down. Lignin in the cell walls gives them strength.

A

xylem vessels

35
Q

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

A

lignin

36
Q

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

A

stomata

37
Q

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

A

transpiration stream

38
Q

groups of xylem and phloem vessels within plant stems

A

vascular bundles

39
Q

loss of water from plant leaves through their stomata

A

transpiration

40
Q

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

A

wilt

41
Q

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.

A

vacuoles

42
Q

describes cells that are not firm due to loss of water

A

flaccid

43
Q

describes something that is firm

A

turgid

44
Q

a disease resulting in the uncontrolled growth of body cells, forming tumours

A

cancer

45
Q

an abnormal growth

A

tumour

46
Q

describes a tumour that does not spread to other parts of the body

A

benign

47
Q

describes a type of tumour that damages cells and can spread to other parts of the body

A

malignant

Year 8 science (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions