Biology Flashcards

1
Q

Which process makes two identical new body cells for growth and repair

A

Mitosis

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2
Q

What happens during stage 1 of the cell cycle

A

The cell grows and the chromosomes replicate

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3
Q

What happens during stage 2 of the cell cycle

A

One set of chromosomes are pulled to each end of the cell

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4
Q

What happens during stage 3 of the cell cycle

A

The cytoplasm and cell membrane split into two new , identical daughter cells

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5
Q

If a cell takes 24 hours to divide, how long will it take to make 8 cells

A

3 days

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6
Q

Name the chemical which genetic material is made from

A

DNA

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7
Q

What is one section of genetic material called

A

A gene

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8
Q

Stem cells are cells that have NOT yet been specialised yet, name one type of specialised cell

A

Sperm cell

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9
Q

Name one specialised design of a sperm cell

A

Streamlined head

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10
Q

Give a difference between a prokaryotic and a eukaryotic cell

A

A eukaryotic cell has a nucleus

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11
Q

How do bacteria cells replicate

A

Binary fission

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12
Q

Name 3 types of eukaryotic cells

A

Plant, animal and fungus

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13
Q

Name a type of prokaryotic cell

A

Bacteria

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14
Q

Chromosomes are copied during the cell cycle, were are chromosomes found

A

In the nucleus

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15
Q

What cell provides extra energy for during mitosis

A

Mitochondria

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16
Q

Why is mitosis important in living organisms

A

To repair tissue cells

17
Q

What is the definition of diffusion

A

For particles to go from a high concentration to a low concentration

18
Q

What is active transport

A

For particles to go from a low concentration to a high concentration

19
Q

How many pairs of chromosomes is there in a human cell

A

23 pairs

20
Q

Where are adult stem cells found

A

Bone marrow

21
Q

Why is the surface area of a leaf flattened

A

To increase surface area and absorb more sunlight

22
Q

Where are plant stem cells found

A

The meristem

23
Q

Where does gas exchange happen

A

Alveoli

24
Q

What is the equation to find the actual size of a image

A

Actual size=Image size
Magnification

25
Q

What is the function of muscles

A

To contract quickly