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Grade 9 > Life Science mock examination > Flashcards

Life Science mock examination Flashcards

1
Q

Nutrition

A

Is a process of obtaining a inorganic or organic substance from which organisms obtain energy and raw materials for growth and develpement

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2
Q

Organic nutrients

A

Are nutrients that consist of carbon and they are made by plants during photosynthesis

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3
Q

enorganic nutrients

A

Are simple nutrients that do not contain carbon and they do not have any energy levels

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4
Q

examples of organic nutrients

A

protein and fat

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5
Q

examples of enorganic nutrients

A

water and mineral salts

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6
Q

deficiency disease of carbohydrates

A

marasmus

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7
Q

symptoms of marasmus

A

thin weak body

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8
Q

food sources of fat

A

butter , cheese

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9
Q

effects of obesity

A

can cause heart attacks
can cause high blood preasure

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10
Q

how to prevent / reduce obesity

A

exercise regularly , avoid a diet with alot of food containing fat

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11
Q

deficiency disease of fibre

A

constipation

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12
Q

symptoms of constipation

A

feaces become dry and hard

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13
Q

food sources of fibre

A

fruits , maize , cereal

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14
Q

deficiency disease of water

A

dehydration

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15
Q

deficiency disease of vitamin c

A

scurvy

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16
Q

symptoms of scurvy

A

gums swell and bleed
poor healing of wounds

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17
Q

deficiency disease of vitamin d

A

rickets

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18
Q

macronutrients

A

are nutrients that are need in large quantities if there is a lack of these nutrients in a body it will resuly in the developement of malnuration disorder

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18
Q

macronutrients

A

are nutrients that are need in large quantities if there is a lack of these nutrients in a body it will resuly in the developement of malnuration disorder

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19
Q

direct proportional

A

when the independent variable increase and the dependent variable increases at the same time

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20
Q

indirectly proportional

A

when the independent variable decreases and the dependent variable increases at the same time

21
Q

which one of these is a plany cell ( cillated cell or xylem vessels)

A

xylem vessels

22
Q

permeable membrane

A

lets al molecules pass through

23
Q

partialy permeable membrane

A

lets only some molecules come through

24
Q

Name the kindoms

A

Kingdon
Phylum
Class
Order
Family
Genus
Species

25
Q

immune system

A

a system that defends the body against infection and other invaders

26
Q

name body fluids that can be infected with hiv

A

semen
blood
breast milk

27
Q

what is the funtion of white blood cells

A

attract and destroy bacteria, viruses and foreign substances

28
Q

the funtion of the spleen in the immune system

A

it filters the blood and removes damaged blood cells it destroys bacteria viruses and other foreign substances

29
Q

funtion of the stomach in the immune system

A

secret hydrochloric acid that kills germs that come into the stomach

30
Q

how does hiv destroy the immune system

A

it attracts and destroys lymphnodes (whiteblood cells) which produce antibodies

31
Q

funtion of lymphnodes

A

produce and store cells that fight infections and diseases

32
Q

common blood test for hiv

A

ELISA
WESTERN BLOT TEST
RAPID TEST

33
Q

What does ELISA stand for

A

Enzyme
Linked
Immunosorbent
Assay

34
Q

what are the effects of Zidovudine

A

causes bone marrow suspension by affecting blood cell production

35
Q

What is malaria

A

malaria is a insect borne disease caused by a parasite called plasmodium which is spread by female mosquitos

36
Q

signs and symptoms of malaria

A

high fever
high body temperature
severe sweating
nausea
diahrrea
vomiting
anaemia

36
Q

Treatment for malaria

A

can be treated with antimalarial drugs that contain the compounds artemisinin
the medicine is used to prevent further transmission

36
Q

Prevention of malaria

A

Killing mosquitos – by draining stagnant waters
Avoiding being bitten by a mosquito by – sleeping under a mosquito net

36
Q

taxonomy

A

science of naming and clasifying organisms

37
Q

Binomial

A

A system used to name species

38
Q

Three major tenents of the cell theory

A

cells are the basic structure unit in living organisms

all living organisms are made up of atleast 1 cell

all cells develope from pre existing cells

39
Q

Eukaryote cell details

A

large
nucleus present
many organelles

40
Q

Prokryote cell info

A

extrenly small
nucleus absent
few organells

41
Q

Multi cellular

A

these are living things that are made up of many cells

they reproduce asexually or sexualy

42
Q

unicellular

A

these are living things made of up only one singular cell

they reproduce by binary fusion and protozoa

43
Q

Name the 5 kindoms

A

Prokaryote
Protoctista
Plantae
Animalea
Fungi

44
Q

Other common infectous diseases in namibia

A

Malaria
TB
Cholera
Polio

45
Q

protein deficiency disease

A

Kwashiorkor

45
Q

protein deficiency disease

A

Kwashiorkor

46
Q

kawshiorkor symptoms

A

bloating
hairloss
diarrhorea

Grade 9 (3 decks)

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