cells ˚୨୧⋆ Flashcards

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1
Q

cell

A

basic unit of life

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2
Q

unicellular

A

organisms made of 1 cell

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3
Q

multicellular

A

organisms made of multiple cells

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4
Q

eukaryotic cell

A

has a nucleus

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5
Q

prokaryotic cell

A

no nucleus

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6
Q

basic unit of life

A

cell

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7
Q

organisms made of 1 cell

A

unicellular

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8
Q

organisms made of multiple cells

A

multicellular

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9
Q

has a nucleus

A

eukaryotic cell

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10
Q

no nucleus

A

prokaryotic cell

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11
Q

nucleus

A

controls cell activities

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12
Q

cytoplasm

A

most chemical processes happen here

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13
Q

cell membrane

A

controls movement of substances in and out of cell

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14
Q

mitochondria

A

releases energy

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15
Q

ribosomes

A

protein synthesis happen here

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16
Q

cell wall

A

strengthens cell + gives it structure

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17
Q

chloroplasts

A

absorbs light energy for photosynthesis

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18
Q

permanent vacuole

A

filled with cell sap to keep cell turgid

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19
Q

bacterial dna

A

loop of dna found in nucleus

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20
Q

plasmid (dna)

A

small ring of dna used as a vector in genetic modification

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21
Q

controls cell activites

A

nucleus

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22
Q

most chemical processes happen here

A

cytoplasm

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23
Q

controls movement of substances in and out of cell

A

cell membrane

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24
Q

releases energy

A

mitochondria

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25
Q

protein synthesis happens here

A

ribosomes

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26
Q

strengthens cell + gives it structure (made of cellulose)

A

cell wall

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27
Q

absorbs light energy for photosynthesis

A

chloroplasts

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28
Q

filled with cell sap to keep cell turgid

A

permanent vacuole

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29
Q

loop of dna not found in the nucleus

A

bacterial dna

30
Q

small ring of dna used as a vector in genetic modification

A

plasmid (dna)

31
Q

how to calculate length of cell in micro-metres (μm)

A

1000μm / number of cells countred in sample

32
Q

light microscope : what particle / beam is used

A

light

33
Q

electron microscope : what particle / beam is used

A

electrons

34
Q

light microscope : max maginifcation

A

2,000

35
Q

electron microscope : max magnification

A

around 1,000,000

36
Q

light microscope : max resolution

A

around 0.2 micrometres

37
Q

electron microscope : max resolution

A

less than 1 nanometre

38
Q

light microscope : 2d / 3d

A

2d

39
Q

electron microscope : 2d / 3d

A

3d

40
Q

what is used to study living cells + is used for regular use

A

light microscope

41
Q

what needs organisms to be dead and stained to be able to see them

A

electron microscope

42
Q

parts of I.A.M triangle

A
  1. image size
  2. actual size
  3. magnification
43
Q

chromosomes

A

long molecule of dna found in the nucleus of a cell

44
Q

diploid

A

cells with pairs of chromosomes

45
Q

haploid

A

cells with a singular set of chromosomes

46
Q

stem cells

A

unspecialised cells

47
Q

cytokinesis

A

cell division

48
Q

interphase

A

cell functions normally

49
Q

what happens when cells divide for growth

A

cell must get bigger
cell must split into 2
new cell parts must be made
chromosomes must be copied

50
Q

long molecule of dna found in the nucleus of a cell

A

chromosomes

51
Q

cells with pairs of chromosomes

A

diploid

52
Q

cells with a singular set of chromosomes

A

haploid

53
Q

unspecialised cells

A

stem cells

54
Q

cell division

A

cytokinesis

55
Q

cell functions normally - nothing happens

A

interphase

56
Q

what is a chromatid an exact copy of?

A

a chromatid is an exacty copy of a chromosomes

57
Q

what happens when chromatids separate from each other

A

they become chromosomes

58
Q

when new daughter cells are made, what must be the exact same as the original cell

A

the number of chromosomes as eachother and the orignal cell

59
Q

before a cell divides, what waws it grow and make copies of?

A

other organelles and the nucleus

60
Q

as cells divide, grow and develop, what else do they do

A

they differentiate

61
Q

what does it mean for a cell to become specialised

A

their structure is related to their function

62
Q

what are unspecialieed cells of plant and animals embryos called

A

stem cells

63
Q

stem cell

A

unspecialised cell that can divide to make more stem cells or different types of specialised cell

64
Q

differentiate

A

become specialised

65
Q

embryonic stem cells

A

can differentiate into almost any cell type in found in middle of embryo

66
Q

adult stem cell

A

can differentiate into few cell types and found in bone marrow

67
Q

specialised cell

A

cell with particular function

68
Q

unspecialised cell that can divide to make more stem cells or differrent types of specialised cell

A

stem cells

69
Q

become specialised

A

differentiate

70
Q

can differentiate into almost any type of cell

A

embryonic stem cell

71
Q

can differentiate in few cell types and found in bone marrow

A

adult stem cell

72
Q

cell with particular function

A

specialised cell