Topic 1-cells, specialised cells Flashcards

1
Q

What is a Eukaryotic cell

A

Complex cell
Includes animal and plants
Made of eukaryotic cells
Single celled organisms

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2
Q

What is a prokaryotic cell

A

Small and simple cells e.g bacteria

Made of prokaryotic cells

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3
Q

What is the job of a nucleus

A

Stores DNA

Controls activity of the cell

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4
Q

What happens in the cytoplasm

A

Chemical reactions controlled by enzymes

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5
Q

What is the job of a cell membrane

A

Holds the cell together

Controls what goes in and out

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6
Q

What happens in the mitochondria

A

Aerobic respiration reactions happen where energy is transferred

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7
Q

What is the job of a ribosome

A

Translates genetic materials in the synthesis of proteins

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8
Q

What is the job of a cell wall

A

Strengthens the cell

Made from cellulose

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9
Q

What is the job of a large vacuole

A

Contains cell sap that Keeps the internal pressure to support the cell

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10
Q

What is the job of a chloroplast

A

Has green chlorophyll

Photosynthesis occurs to make food for the plant

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11
Q

What is flagellum

A

Long hair like

Moves bacteria to beneficial things e.g oxygen or nutrients

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12
Q

What is the job of chromosomal DNA

A

Controls replication

Floats free in cytoplasm

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13
Q

What is plasmid DNA

A

Small loops of extra DNA

Contain genes

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14
Q

What is the process of sexual reproduction

A

Egg fuses with sperm
Forms a fertilised egg (zygote)
Turns into embryo through mitosis

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15
Q

What is the job of an egg cell

A

Carries female DNA

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16
Q

Why is the job of a sperm cell

A

Transports male DNA to egg

17
Q

How is an egg cell adapted

A

Nutrients in cytoplasm to feed embryo

After fertilisation structure changes so no more sperm cells can get in

18
Q

How is a sperm cell adapted

A

Long tail to swim
Lots of mitochondria for energy
Acrosome stores enzymes needed to digest through membrane

19
Q

What is unique about a bacteria cell

A

It has no nucleus

20
Q

What is the role of cilliated epithelial cells

A

They line the surface of organisms

They move substances

21
Q

What is the role of cillia

A

Moves substances in one direction along the surface of a tissue