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9 biology end of years > key concepts > Flashcards

key concepts Flashcards

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1
Q

What 8 features does a plant cell have?

A

Chloroplasts, vacuole, nucleus, cytoplasm, cell membrane, cell wall, mitochondria, ribosomes

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2
Q

What 5 features does an animal cell have?

A

Cell membrane, nucleus, cell wall, ribosomes, mitochondria

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3
Q

What is the function of a nucleus?

A

Control centre of the cell. Contains the genes of the cell.

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4
Q

What is the function of the cytoplasm in a cell?

A

Chemical reactions like respiration take place here.

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5
Q

What is the function of the cell surface membrane?

A

Stores sugar and helps the cell fill the cell wall

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6
Q

What is the function of the cell wall?

A

Makes a rigid box that supports the cell

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7
Q

What is the function of the cell sap vacuole?

A

Let’s some substances in to the cell and keeps others out

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8
Q

What is the function of the chloroplasts?

A

Where photosynthesis takes place

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9
Q

What do plant cells have that animal cells don’t?

A

Chloroplasts, vacuole, cell wall

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10
Q

What does the root hair cell do and where is it found?

A

It is found in the roots of the plant, it absorbs water and the hairs help increase the surface area

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11
Q

What does the cell from breathing system do?

A

It has microvilli and this helps to give the cell a higher surface area. It is found in the windpipe and it absorbs food

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12
Q

What does a red blood cell do and where is it found?

A

Because it carries haemoglobin it needs a high surface area. It is found in the bloodstream and it absorbs and carries oxygen around the body. It doesn’t have a nucleus and his allows more space for oxygen.

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13
Q

What does a plant cell do and where is it found?

A

It has chloroplasts, found in the lead and it performs photosynthesis.

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14
Q

What does a sperm cell do and where is it found?

A

Has a tail to help it swim and carry genes to the egg. It is found in the testes.

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15
Q

What does a ciliates cell do and where is it found?

A

Found in the digestive system where it uses its cilia to push substances and mucus along. Found in the small intestine.

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16
Q

Name two different types of bacteria

A

Salmonella and yaculi

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17
Q

What are pathogens?

A

Harmful bacteria that can cause disease.

18
Q

What does a white blood cell do?

A

Kills harmful bacteria

19
Q

What does a nerve cell do?

A

Sends electrical impulses/messages to the brain

20
Q

What is a eukaryotic cell?

A

Cells which have a true nucleus. Evolved from prokaryotes.

21
Q

What are prokaryotic cells?

A

Cells without a true nucleus. Simplest and oldest cells

22
Q

Nanometer (nm) —> micrometer

A

Divide by 1000

23
Q

Micrometer to millimetre

A

Divide by 1000

24
Q

Millimetre to centimetre

A

Divide by 10

25
Q

Centimetre to millimetre

A

X10

26
Q

Millimetre to micrometer

A

X1000

27
Q

Micrometer to nanometer

A

X1000

28
Q

Actual size of a magnified object

A

Image
———
Magnification

29
Q

Magnification of an image

A

Image size
—————
Actual size

30
Q

What does muscular tissue do?

A

This can contract to bring out movement

31
Q

What does epithelial tissue do?

A

This covers some parts of the body

32
Q

What does glandular tissue do?

A

Produces substances such as enzymes and hormones.

33
Q

What does glandular tissue produce in the stomach?

A

Produces digestive juices

34
Q

Where in the stomach does epithelial tissue cover?

A

The inside and outside

35
Q

What would happen if the muscular tissue in the stomach was not functioning properly?

A

The food would not digest properly

36
Q

What substance does the liver produce?

A

Bile

37
Q

What does the large intestine produce?

A

Faeces

38
Q

What glands produce the digestive juices?

A

The pancreas and salivary glands

39
Q

Where does absorption of soluble foods take place?

A

In the stomach and in the large intestine

40
Q

What are chromosomes and where would you find them?

A

Chromosomes carry genetic info. Found in the nucleus.

41
Q

Why are there lots of mitochondria in ciliated cells?

A

Cilia move and hey need lots of energy

9 biology end of years (4 decks)

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