What is a artificial pacemaker?

Electrical device to correct irregularities in heart rate.

How acid or alkali a substance is

Coronary Heart Disease is caused by?

A build up of fatty material inside the coronary artery.

What is a control variable?

A variable that must be kept constant

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Organisation AQA GCSE

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The basics of the organisation module #Horton #GCSE #Biology #AQA #organisation

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Questions 15

Answers

1
The first chambers of the heart are called?
Atrium's
Ventricle's
Aorta's
Valves's
2
What is a artificial pacemaker?
An electrical device that speeds up digestion.
An electrical device that restarts the heart.
An electrical device that help sports people run faster.
Electrical device to correct irregularities in heart rate.
3
What pH does Amylase work best in?
7
14
8
1
4
The two arteries that carry blood away from the heart are called?
Aorta
Pulmonary Artery
Pulmonary Vein
Vena Cava
5
What is pH
How acid or alkali a substance is
How reactive a substance is
How fast a substance is
How hot or cold a substance is
6
What is the function of Red Blood Cells?
To carry electrical impulses
To fight infection
Too carry oxygen
Too carry carbon dioxide
7
Coronary Heart Disease is caused by?
Eating to much cholesterol.
Having a high resting heart rate
Genetics.
A build up of fatty material inside the coronary artery.
8
What molecules is protein made from?
Amino Acids
Lipids
Sugars
Glycerol
9
What food group does biuret solution test for?
Sugar
Carbohydrates
Fats
Protein
10
What cells are these?
Root Hair Cells
Red Blood Cells
Brain cells
Nerve Cells
11
What is a group of cells with similar structure and function called?
An organ
A tissue
A group
A system
12
What colour does Iodine solution turn in the presence of starch?
Light Brown
Purple
Black
Blue - Black
13
What is a control variable?
A variable that must be kept constant
A variable that you change
A variable that you measure
14
The blood vessels that carry blood away from the heart are all?
Capillaries
Veins
Arteries
15
What colour does biuret solution turn if protein is present in food?
Green --> Yellow --> Red
Blue - Black
Light Brown
Purple

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