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Science year 10 > A > Flashcards

A Flashcards

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Biology 101 flashcards
1
Q

What is the cytoplasm

A

A jelly like substance where most of the chemical rections happen

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2
Q

Where do most of the chemical reactions take place

A

Cytoplasm

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3
Q

What is the nucleus

A

Contains genetic material like DNA which controls the cells activities

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4
Q

What’s the cell membrane

A

Controls what goes in and out of the cell

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5
Q

How can the cell membrane let some things through and not others

A

It’s structure is permeable to some substances but not to others

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6
Q

What contains the enzymes for respiration

A

Mitochondria

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7
Q

What are ribosomes

A

Tiny structures where protein synthesis occurs

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8
Q

What realises the most energy during respiration

A

Mitochondria

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9
Q

Are most sides specialised

A

Yes

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10
Q

Do plant cells have a nucleus

A

Yes

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11
Q

What do plant cells have that animal cells do not

A

Chloroplasts
Vacuole
Cell wall

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12
Q

What do cell walls do

A

Strengthens the cell and supports the plant

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13
Q

What are cell walls made of

A

Cellulose fibres

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14
Q

Are chloroplasts organs

A

No they are organelles

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15
Q

are chloroplasts organelles

A

Yes

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16
Q

What contains the enzymes needed for photosynthesis

A

Chloroplasts

17
Q

What are permanent vacuoles filled with

A

Cell sap

18
Q

What does a permanent vacuole do

A

Filled with cell sap to help keep the cell turgid.

19
Q

How many pairs of chromosomes are there in a human body

A

23

20
Q

How many chromosomes are there in total in a human body

A

46

21
Q

True or false: Females are referred to as XY

A

False females are referred to as XX as they have two X chromosomes

22
Q

What chromosomes are there in a male

A

XY

23
Q

True or false chromosomes in a male are referred to asXY

A

True

24
Q

Is dna in a cell nucleus

A

Yes

25
Q

Why do cells divide

A

An organism

An organism becomes damaged and needs to produce new cells

26
Q

What’s the first stage of the cell cycle

A

Cell growth

Science year 10 (1 decks)

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