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Mitosis and the cell cycle | AQA GCSE Biology 1.2.2 Flashcards | StudBud
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Mitosis and the cell cycle | AQA GCSE Biology 1.2.2
Mitosis and the cell cycle | AQA GCSE Biology 1.2.2
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1
During mitosis (cell division), one cell becomes...
2 genetically different cells
3 genetically identical cells
3 genetically different cells
2 genetically identical cells
2
Mitosis is important because it...
helps cells repair themselves
helps organisms grow by increasing the number of cells
helps cells grow in size
3
What are chromosomes made of?
Carbohydrates
DNA
Proteins
Fibres
4
During which stage of mitosis does the nucleus divide?
Stage 1; when genetic material doubles
Stages 2; mitosis
Stage 3; where the cell splits into 2 new cells
5
How many
pairs
of chromosomes are in a human body cell?
23
38
46
15
6
What is the result of mitosis?
Creates 4 identical sex cells (eg. sperm / egg)
Creates 2 different body cells
Creates 2 identical body cells
Creates 4 different sex cells (eg. sperm / egg)
7
How many chromosomes are in a human body cell in
total
?
46
15
38
23
8
During which stage of the cell cycle does the cytoplasm and cell membrane divide?
Stage 3
Stage 1
Stage 2
9
Before a human cell starts the cell cycle, it has 46 chromosomes. How many chromosomes are there at the end of stage 1?
23
46
Still 46, but each has a copy
4
10
During stage 1 of the cell cycle, the cell grows and the number of sub-cellular structures increases eg. ribosomes
False
True
11
Which stage of the cell cycle is longest?
Stages 2; mitosis, where the nucleus divides.
Stage 1; where the genetic material doubles.
Stage 3; where the cell splits into 2 new cells.
12
What happens to DNA (genetic material) during stage 1 of the cell cycle, when the cell is preparing for mitosis?
It is divided
It is doubled / replicated
