Cell Div 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
What stage of the cell cycle is represented by X
Interface
26
Defined mitosis
Forming two identical cells
27
Two ways in which meiosis defers from mitosis
Variation Chromosome number Haft
28
Name two stages of the cell cycle
Interphase mitosis
29
One function of meiosis and one location in a plant where meiosis occurs
Sexual reproduction Ovule
30
Name the Phase that occurs before telophase and describe what happens to the chromosomes during That phase
Anaphase Chromosomes are pulled to opposite ends of the cell
31
Explain diploid
Chromosome in pairs
32
What is the main function of mitosis in multicellular organisms
Growth
33
Name the stage of mitosis during which the chromatic begins to condense
Prophase
34
What name is given to the part of the cell cycle during which No cell division is taking place
Interface
35
Towards the end of mitosis in what type of Cell does a cleavage form
Animal
36
What term is used to describe the Long stage of the cell cycle one cell division is not occurring
Interface
37
Name two types of biomolecules that are produced in the cell during Interface
Protein or fat
38
Name one organelle that is replicated at this stage of the cell cycle
Mitochondrion
39
Give I need to order changes which will have occurred in the cell by the end of interphase
Formation of spindle Chromosomes condense
40
Suggest why amateur human red blood cells do not undergo cell divisions
They don’t have a nucleus
41
Explain why the chromosomes are being pulled to opposite ends of the cell
Contraction of spindle fibres
42
In what group of organisms does mitosis normally results in growth
Multicellular
43
Explain under what circumstances mitosis can result in cancer developing
Normal regulation lost
44
Two functions of meiosis
 to reduce chromosomes number To introduce variation
45
What is the role of mitosis in single celled organism
Reproduction
46
Name the stage of mitosis in which the chromosomes are located at the equator of the cell and before they begin to separate
Metaphase
47
Two what are the chromosomes attached in the stage of mitosis referred to in D
Spindle
48
Towards the end of mitosis in What type of cell does a cell plates form
Plant
49
One way in which mitosis differs from Meiosis
Identical cells
50
What is meant by diploid number
Chromosomes in pairs
51
Identify the parts labelled A b and c
A chromosome B Centromere C Spindle
52
Name the stage of mitosis represented by this diagram
Metaphase
53
What is the function of meiosis
To reduce chromosome number
54
Name this stage of mitosis
Anaphase
55
Give a feature from the diagram which allowed you to identify this stage
Chromosome separators
56
Name a and b
A spindle B Chromosome
57
What is the function of mitosis in single celled organisms
Reproduction
58
One function of mitosis in multicellular organisms
Growth
59
Give one location where mitosis occurs in flowering plants
Pollen
60
Give the names of the two processes including DNA which take place during interphase
Uncoiling or replication
61
Mitosis is divided into four stages list these in order
Prophase metaphase anaphase telophase
62
In which of the stages of mitosis would you expect to see the spindle fibres contract in
Anaphase
63
Difference between prokaryotes and eukaryotes
Prokaryotes have no True nucleus but Eukaryotes do Prokaryotes have no membrane-bound organelles But eukaryotes do
64
Difference between mitochondria and chloroplast
Mitochondria Involved in respiration Chloroplast makes food by photosynthesis 
65
Difference between Oregon and tissue
Group of tissues working together Group of cells working together
66
Difference between diploid and haploid
Two sets of chromosomes versus one
67
What stage of mitosis is Show 
Metaphase Chromosomes on equator
68
What is the diploid number
Four
69
Role of chromosomes
For protein