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Biology P1 > 62 - 92 > Flashcards

62 - 92 Flashcards

1
Q

red blood cell purpose

A

carry oxygen

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2
Q

white blood cell purpose

A

destroy pathogens

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3
Q

platelets purpose

A

clot the blood

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4
Q

plasma def

A

liquid part of the blood

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5
Q

what happens in coronary heart disease

A

layers of fatty material build up blocking the coronary arteries, narrowing them

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6
Q

effects of coronary heart disease (2)

A

lack of oxygen and less respiration

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7
Q

stents purpose

A

keep coronary arteries open

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8
Q

statins purpose

A

reduces chloresterol levels, slowing down deposite of fatty materials

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9
Q

what replaces faulty heart valves (2)

A

biological and mechanical valves

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10
Q

treatment for heart failure (2)

A

artifical heart and heart transplants

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11
Q

non comunicable desease def

A

diseases not transmittable and not caused by pathogens

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12
Q

3 examples of non communicable disease

A

heart cancer, diabetes, cancer

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13
Q

risk factors linked with increasing chance of getting disease (4)

A

Obesity - type 2 diabetes
Smoking - lung cancer?disease
Diet, excersise - cardiovascular
Carcinogens - cancer

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14
Q

cancer is caused by…

A

changes in the cells causing uncontrolled growth and division

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15
Q

benign tumours

A

surrounded by membrane
do not invade other parts of the body

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16
Q

malignant tumour cells

A

cancers and spread to other parts of body forming secondary tumours

17
Q

plant tissues inside the leaf (7)

A

epidermal tissues, palisade mesophyll, spongy mesophyll, xylem, phloem and stomata surrounded by guard cells

18
Q

how are roots adapted (3)

A

root hair cells to increase surface area
uptake of water by osmosis
uptake of mineral ions by active transport

19
Q

what does the stomata and the guard cell control in the leaf

A

gas exchange and water loss

20
Q

describe the phloem transport

A

translocation - transports dissolved sugar up and down plant

21
Q

describe xylem transport

A

transportation of water and mineral ions from the roots to the leaves

22
Q

transpiration def

A

loss of water at leaves by evaporation

23
Q

what are communicable diseases spread by

A

pathogens

24
Q

what are pathogens

A

microorganisms that cause disease

25
Q

e.g. of pathogens (4)

A

bacteria, viruses, fungi, protists

26
Q

how does bacteria make us ill

A

reproduce inside body and produce toxins

27
Q

how do viruses make us ill

A

reproduce inside cells and cause damage

28
Q

viral disease examples in animals (2)

A

hiv and measles

29
Q

viral disease example in plants

A

tobacco mosaic virus

30
Q

bacterial diseases examples (2)

A

salmonella and gonorrhoea

31
Q

what is rose black spot disease

A

fungal disease in plants

32
Q

what is malaria caused by

A

mosquito acting as protist

Biology P1 (4 decks)

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