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Science Revision > Biology-Cells > Flashcards

Biology-Cells Flashcards

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Biology 101 flashcards
1
Q

What is a cell membrane?

A

A barrier around the cell. This controls what comes in and out of a cell.

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2
Q

What is a nucleus?

A

Controls the cells activities

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3
Q

What is a cytoplasm?

A

Where chemical reactions happen.

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4
Q

What is the meaning of Mitochondria?

A

Tiny parts of cells floating in the cytoplasm where energy is released from glucose from food. This mitochondria, found in the cell cytoplasm, are where most respiration happens.

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5
Q

What is a cell wall?

A

Strengthens the cell and provides support.

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6
Q

What is a vacuole?

A

(Normally permanent) contains a watery liquid called a cell sap.

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7
Q

What is fibres?

A

The wall that contains a very thick layer of lignin and they occur in many parts of the plant, wherever strength is needed.

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8
Q

What is parenchyma cells?

A

These cells contain living clyptoplasm.

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9
Q

What is a red and white cell?

A

Red cell- one kind of plasma (a watery liquid).
White cell- another kind of plasma, which too has a watery liquid.

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10
Q

What are root hair cells?

A

They are in front of plants. They are adapted to have a large area to absorb as much water as possible.

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11
Q

What are red blood cells apart of and what are they important for?

A

They are part of you blood. They have no nucleus and can be squashed so they can pass easily through small blood vessels. They are important for respiration.

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12
Q

What’s diffusion?

A

Movement of a substance from and area of high concentration to an area of low concentration.

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13
Q

What does Mrs gren stand for?

A

M- movement- you can run
R- respiration- you can get energy from food
S- sensitivity- you could be sensitive to light.
G- growth- you grow from baby to teenager to adult
R- reproduction- when babies are born
E- excretion- when you drink
N- nutrition- foods can be nutritious

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14
Q

What are amoeba used for and why isn’t it a plant cell? Why is euglena not a plant cell?

A

Amoeba is used for food ingestion, locomotion and buoyancy.
Amoeba is not an animal cell because it is a single cell.
Euglena is not a plant cell because it’s a single cell.

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15
Q

What are tracheid?

A

One kind of xylem cell.

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16
Q

What are bordered pits?

A

Water passes from one tracheid to another through bordered pits.

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17
Q

What is fungi?

A

Fungi are a group of living organisms. They are not animals, plants or bacteria. Fungi have complex eukaryotic cells like animals and plants.

18
Q

What is flagellum used for?

A

They are used to let the tails swim through liquid. Say if you had salmonella but you didn’t have more then one of them inside you, that is called bacterium.

19
Q

What is a skull used for and what is it made of?

A

It is used to protect the brain and some sense organs.
It is made up of cranium (eight bones.)

20
Q

What does vertebrae protect?

A

It protects and supports the spinal cord.

21
Q

What is clavide?

A

Clavide is a function as a strut to support the shoulder.

22
Q

What is humerus?

A

It is an attachment to 13 muscles which helps the movement of the hand, elbow and upper limb.

23
Q

What is a cell?

A

Building blocks of life

24
Q

What is a tissue?

A

Groups of similar cells worthy together.

25
Q

What’s an organ?

A

Groups of tissue working together.

26
Q

What is an organ system?

A

Groups of organs working together.

27
Q

What is an organism?

A

Groups of organ systems working together.

28
Q

What’s a higherarchy?

A

When a Multi-cellular have five layer me of organism.

29
Q

What’s a circulatory system?

A

Transports substances around the body in the blood

30
Q

What’s a respiratory system?

A

Takes in oxygen and removes carbon dioxide for the blood

31
Q

How much is a skeletal made of?

A

It’s made of over 200 bones.

32
Q

Difference between joints and ligaments?

A

Joints let your bones move
Ligaments held bones together

33
Q

What are the four main types of joints?

A

Hinge, ball, socket and pivot

34
Q

What are muscles joined together by?

A

Special fibres called tendons (they do not stretch at all)

35
Q

What’s is called when two muscles are both pulling with the same force?

A

Equilibrium

36
Q

We have a backbone made up of lots of bones, but what is it called?

A

Vertebrae

37
Q

What’s arthritis?

A

Is where bones rub against each other leaving them saw (which can also hurt)

38
Q

What are ligaments made up of?

A

Very strong stringy tissue that does not stretch very much

39
Q

What are chloroplast?

A

When photosynthesis happens

40
Q

What are unicellular organisms?

A

It’s when organisms are made of only one cell.

41
Q

What are multicellular cells?

A

When things are made from millions or billions of cells.

Science Revision (5 decks)

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