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GCSE Revition > Bio > Flashcards

Bio Flashcards

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1
Q

Deffntion of osmosis

A

The movement of water from a high concentration to a low concentration through a semi permeable membrane

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2
Q

State the definition of diffusion

A

The movement of partials from a high concentration to a lower concentration

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3
Q

What is an animal cell eukaryotic or prokaryotic

A

Eukaryotic

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4
Q

Cytoplasm definition

A

A jelly like material and is where most chemical reactions take place

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5
Q

Nucles

A

Contains dna holds genetic material

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6
Q

Cell membrane definition

A

Controls what goes in and out of the cell

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7
Q

Mitochondria definition

A

Where energy is released for photosynthesis

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8
Q

Ribosomes definition

A

Where proteins are made

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9
Q

Things found in an plant cell which are not found in an animal cell

A

Permanent vacuole
Cell wall

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10
Q

Permanent vacuole definition

A

Filed with cell sap

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11
Q

Cell wall definition

A

Made from cellulose / strengths the cell and supports the plant

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12
Q

What is the difference between eukaryotic and prokaryotic cells

A

Eukaryotic cells DNA is linear
Whereas prokaryotic cells DNA is
Circular

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13
Q

What is a stem cell

A

A stem cell is an unidentified cell which can differentiate into any function needed in the body

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14
Q

Where are stem cells found

A

In the bone marrow

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15
Q

What is a stent

A

A stent is a metal mesh placed into the blocked conary artery which hold the blocked artery open so blood flow can be restored

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16
Q

What are statins

A

Stains are small tablets you can take if you have high blood cholesterol they are used to reduce your cholesterol levels

17
Q

Advantage of stents

A

No responsibility of taking anything
Quicker results

18
Q

Disadvantages of stents

A

Can get blood clots
Bleeding
Stroke
Tear inside your artery

19
Q

Advantages of statins

A

No risks of blood clotting
Reduces risk of a stroke

20
Q

Disadvantages of statins

A

Have to take everyday and cannot forget
Headaches
Digestive problems

21
Q

How can a stent prevent a heart attack

A

Because your arteries are not built up with fatty material restricting the blood flow of oxygen through to your heart

22
Q

The equation for calculating the size of an object

A

Magnification = Size of image |size of real object

23
Q

Structures you would expect to find in a human cell

A

Ribosomes
Nucles
Cell membrane

24
Q

Structures you would expect to find in a plant cell

A

Mitrocondriea
Permanent vacuole
Chloroplast

25
Q

What functions are found in plant cells but not animal cells

A

Permanent vacuole
Chloroplast
Cell wall

26
Q

Why is the Nucles so important in the cell

A

Because it holds all the genetic material and controls the activity of the cell

27
Q

Why is the mitochondria so important in the cell

A

It creates energy to drive cellular functions

28
Q

What kind of cell is a prokaryotic cell

A

It is a bacterial single-felled living organism it has a single DNA loop found free in the cytoplasm

29
Q

Define what is meant by the flagella

A

Microscopic hair - like structure

30
Q

What do eukaryotic cells have

A

Cell membrane
Cytoplasm
Genetic material included into the Nucles

31
Q

What do prokaryotes cells consist of

A

Cytoplasm
Cell membrane
Cell wall
Single stand of DNA

32
Q

What is a nerve cell

A

Nerve cells are speciled to carry electrical impulses around the body they provide rapid communication systems between the different parts of the body

GCSE Revition (12 decks)

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