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GCSE Biology Paper 1- Topic 1 > Cells > Flashcards

Cells Flashcards

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1
Q

What is a cell?

A

Basic unit of life, from which larger structures such as tissues and organs are made

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2
Q

What is uni-cellular and give an example?

A

Single cell

Example: bacteria, amiba

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3
Q

What is an anti body?

A

A substance that fights viruses

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4
Q

What is the function of the nucleus?

A

Contains the cell’s DNA

Controls the cell’s activities

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5
Q

What is the function of the cell membrane?

A

Controls the movement of substances in and out of the cell.

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6
Q

What is the function of the cytoplasm?

A

Holds everything inside the cell.

Contains dissolved nutrients

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7
Q

What is the function of the cell wall?

A

Made of tough cellulose

Supports plant cells to keep shape

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8
Q

What is the function of chloroplasts?

A

Contains chlorophyll, which absorbs sunlight for photosynthesis

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9
Q

What is the function of mitochondrion?

A

Respiration occurs here, energy is released into the cell

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10
Q

What is the function of the permanent vacuole?

A

A space filled with cell sap.

Supports the cell

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11
Q

What is the function of ribosomes?

A

The sites of protein synthesis

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12
Q

What are specialised cells?

A

Specialised cells are also known as gametes, such as egg and sperm cells

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13
Q

Where can ribosomes, mitochondria and microvilli be found?

A

Small intestine

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14
Q

What is epithelial tissue?

A

Thin tissue that covers the body’s outer surface. For example, in the digestive system

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15
Q

What parts of bacteria are there?

A 
Flagellum: to be able to move
Chromosomal DNA: large loop
Plasmid: small loops of DNA
Cytoplasm
Cell wall and slime coat for protection
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16
Q

What is a prokaryote + example?

A

Single-celled organism

eg: Bacteria

17
Q

What is a eukaryote + example?

A

Complex cells compared to prokaryotes

eg: Plant and animal cells

18
Q

What is the function of chromosomal DNA in bacteria?

A

Controls the cell’s activities and replication

19
Q

What is the function of Plasmid DNA in bacteria?

A

Contains genes for things like drug resistance and can be passed between bacteria

20
Q

What is the function of the flagellum in bacteria?

A

Rotates to make the bacteria move

Used to move the bacteria away from harmful substances (eg: Toxins) and towards beneficial US Aston es (eg: Nutrients)

21
Q

What is an adaptation of a ciliates epithelial cell?

A

Lots of mitochondria to provide them with energy to ‘waft’ substances in the body

GCSE Biology Paper 1- Topic 1 (12 decks)

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