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Biology GCSE > B1 > Flashcards

B1 Flashcards

1
Q

Definition of healthy

A

Being free of any infections or disease

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2
Q

Definition of fit

A

A measure of how well you can perform physical tasks

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3
Q

Factors that increase blood pressure

A

Smoking; Being overweight; Alcohol; Stress

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4
Q

Results of high blood pressure

A

Strokes; Brain damage; Kidney damage

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5
Q

Results of low blood pressure

A

Dizzy & Fainting

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6
Q

What is the effect of nicotine on the body?

A

Increased heart rate, heart contracts more which increases blood pressure

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7
Q

Function of carbohydrates

A

Provides energy

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8
Q

Function of fats

A

Provides energy & acts as insulation

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9
Q

Function of proteins

A

Needed for growth & repair of tissue & provides energy

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10
Q

Function of water

A

To prevent dehydration

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11
Q

Function of vitamins and minerals

A

Various functions eg: iron needed to make haemoglobin for healthy blood,
Vitamin C to prevent scurvy

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12
Q

Where are carbohydrates stored?

A

In the liver as glycogen or converted into fats

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13
Q

What are fats made up of?

A

Fatty acids & glycerol

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14
Q

Where are fats stored?

A

Under the skin and around organs

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15
Q

What are proteins made up of?

A

Amino acids

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16
Q

What can eating too little protein lead to?

A

Kwashiorkor

17
Q

What does BMI stand for?

A

Body mass index

18
Q

What does BMI indicate?

A

If you are under or overweight

19
Q

4 types of pathogens

A

Fungi; Bacteria; Viruses; Protozoa

20
Q

What pathogen causes athletes foot?

A

Fungi

21
Q

What pathogen causes cholera?

A

Bacteria

22
Q

What pathogen causes flu?

A

Viruses

23
Q

What pathogen causes dysentery?

A

Protozoa

24
Q

Examples of class A drugs

A

Heroin; LSD; Ecstasy; Cocaine

25
Q

Examples of class B drugs

A

Cannabis; Amphetamines

26
Q

Examples of class C drugs

A

Anabolic steroids; Tranquillisers

27
Q

The role of the cornea

A

Refracts light into the eye

28
Q

The role of the iris

A

Controls how much light enters the pupil

29
Q

The role of the lens

A

Refracts light, focusing it onto the retina

30
Q

The role of the retina

A

Detects light

31
Q

The role of the optic nerve

A

Carries impulses from the receptors to the brain

32
Q

What does long-sited mean?

A

They are unable to focus on near objects

33
Q

What does short-sited mean?

A

They are unable to focus on distant objects

34
Q

What happens when you are too hot?

A

Hairs lie flat; Lots of sweat; Blood vessels widen

35
Q

What happens when you are too cold?

A

Hairs stand on end; Very little sweat produced; Shiver

Biology GCSE (1 decks)

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