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Biology > Cell Div > Flashcards

Cell Div Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

Chromosomes are double stranded at the start of prophase

A

True

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2
Q

Diagram stage
justify
Part labelled x

A

Anaphase,
Spindle contracting
Spindle

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3
Q

Diploid explain

A

2 sets of chromosomes

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4
Q

One function of mitosis in humans

A

Growth

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5
Q

Example of human cell not produced by mitosis

A

Sperm

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6
Q

Cell continuity meaning

A

All cells develop from pre existing cells

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7
Q

One type of bio molecule and one organelle replicated during interphase

A

Protein
Mitochondrion

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8
Q

Two ways in which the nucleus of a cell during interphase will differ from that of a cell at the end of prophase

A

Chromosomes elongated
Chromosomes have not duplicated

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9
Q

The type of cell division responsible for reproduction in unicellular organisms

A

Mitosis

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10
Q

The type of cell division that occurs in a cancer cells

A

Mitosis

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11
Q

Why are human cells eukaryotic

A

They possess a nucleus
Membrane-bound organelles

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12
Q

What’s the relationship between an organ and organ system

A

Organ system consists of a number of organs working together

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13
Q

Name any one organ system found in animals

A

Digestive

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14
Q

Explain the term tissue culture

A

Growth of cells outside an organism

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15
Q

State 2 conditions necessary for a successful tissue culture

A

Sterile and hormones

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16
Q

Name the type of cell division that takes place during this process

A

Mitosis

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17
Q

Tissue culture results in the production of clones explain clones

A

Genetically identical

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18
Q

Give two events that happened during prophase

A

Spindle forms
Chromosomes become shorter

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19
Q

What happens in animal cells and plant cells after mitosis

A

Cleavage
Cell plate

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20
Q

One function of Mitosis or meiosis in multicellular organismsg

A

Growth and sexual reproduction

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21
Q

Describe the appearance of the nucleus at the end of prophase

A

Chromosomes visible into strands
Spindle fibres appear

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22
Q

In the diagram shown below the chromosomes are lines along the centre of the cell in metaphase but they have started to move to opposite ends of the cell in anaphase explain why they have started to move apart

A

Spindle fibres contract

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23
Q

Name name the final stage of mitosis

A

Telophase

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24
Q

Explain the link between mitosis and cancer

A

Loss of regulation over rated of mitosis causes cancer

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25
Q

What stage of the cell cycle is represented by X

A

Interface

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26
Q

Defined mitosis

A

Forming two identical cells

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27
Q

Two ways in which meiosis defers from mitosis

A

Variation
Chromosome number Haft

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28
Q

Name two stages of the cell cycle

A

Interphase
mitosis

29
Q

One function of meiosis and one location in a plant where meiosis occurs

A

Sexual reproduction
Ovule

30
Q

Name the Phase that occurs before telophase and describe what happens to the chromosomes during That phase

A

Anaphase
Chromosomes are pulled to opposite ends of the cell

31
Q

Explain diploid

A

Chromosome in pairs

32
Q

What is the main function of mitosis in multicellular organisms

A

Growth

33
Q

Name the stage of mitosis during which the chromatic begins to condense

A

Prophase

34
Q

What name is given to the part of the cell cycle during which No cell division is taking place

A

Interface

35
Q

Towards the end of mitosis in what type of Cell does a cleavage form

A

Animal

36
Q

What term is used to describe the Long stage of the cell cycle one cell division is not occurring

A

Interface

37
Q

Name two types of biomolecules that are produced in the cell during Interface

A

Protein or fat

38
Q

Name one organelle that is replicated at this stage of the cell cycle

A

Mitochondrion

39
Q

Give I need to order changes which will have occurred in the cell by the end of interphase

A

Formation of spindle

Chromosomes condense

40
Q

Suggest why amateur human red blood cells do not undergo cell divisions

A

They don’t have a nucleus

41
Q

Explain why the chromosomes are being pulled to opposite ends of the cell

A

Contraction of spindle fibres

42
Q

In what group of organisms does mitosis normally results in growth

A

Multicellular

43
Q

Explain under what circumstances mitosis can result in cancer developing

A

Normal regulation lost

44
Q

Two functions of meiosis

A

 to reduce chromosomes number
To introduce variation

45
Q

What is the role of mitosis in single celled organism

A

Reproduction

46
Q

Name the stage of mitosis in which the chromosomes are located at the equator of the cell and before they begin to separate

A

Metaphase

47
Q

Two what are the chromosomes attached in the stage of mitosis referred to in D

A

Spindle

48
Q

Towards the end of mitosis in What type of cell does a cell plates form

A

Plant

49
Q

One way in which mitosis differs from Meiosis

A

Identical cells

50
Q

What is meant by diploid number

A

Chromosomes in pairs

51
Q

Identify the parts labelled A b and c

A

A chromosome
B Centromere
C Spindle

52
Q

Name the stage of mitosis represented by this diagram

A

Metaphase

53
Q

What is the function of meiosis

A

To reduce chromosome number

54
Q

Name this stage of mitosis

A

Anaphase

55
Q

Give a feature from the diagram which allowed you to identify this stage

A

Chromosome separators

56
Q

Name a and b

A

A spindle
B Chromosome

57
Q

What is the function of mitosis in single celled organisms

A

Reproduction

58
Q

One function of mitosis in multicellular organisms

A

Growth

59
Q

Give one location where mitosis occurs in flowering plants

A

Pollen

60
Q

Give the names of the two processes including DNA which take place during interphase

A

Uncoiling or replication

61
Q

Mitosis is divided into four stages list these in order

A

Prophase metaphase anaphase telophase

62
Q

In which of the stages of mitosis would you expect to see the spindle fibres contract in

A

Anaphase

63
Q

Difference between prokaryotes and eukaryotes

A

Prokaryotes have no True nucleus but Eukaryotes do

Prokaryotes have no membrane-bound organelles But eukaryotes do

64
Q

Difference between mitochondria and chloroplast

A

Mitochondria Involved in respiration

Chloroplast makes food by photosynthesis



65
Q

Difference between Oregon and tissue

A

Group of tissues working together

Group of cells working together

66
Q

Difference between diploid and haploid

A

Two sets of chromosomes versus one

67
Q

What stage of mitosis is Show 

A

Metaphase

Chromosomes on equator

68
Q

What is the diploid number

A

Four

69
Q

Role of chromosomes

A

For protein

Biology (7 decks)

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