NAMIBIA SENIOR SECONDARY CERTIFICATE
BIOLOGY ORDINARY LEVEL 4322/1
PAPER 1 Multiple Choice 1 hour
Marks 40 2017
Additional Materials: Multiple choice answer sheet
Soft clean eraser
Soft pencil (type B or HB is recommended)
INSTRUCTIONS AND INFORMATION TO CANDIDATES
V E L
E
• Write in soft pencil.
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• Answer all questions.
• Make sure that you receive the multiple choice answer sheet with your Candidate Number
Y
on it.
R
• There are forty questions on this paper.
• For each question, there are four possible answers A, B, C and D. Choose the one you
A
consider correct and record your choice in soft pencil on the separate answer sheet.
• If you want to change an answer, thoroughly erase the one you wish to delete.
I N
Read the instructions on the answer sheet carefully.
D
• Each correct answer will score one mark.
R
• All questions in this paper carry equal marks.
O
• Any rough working should be done in this booklet.
• You may use a non-programmable calculator.
This document consists of 10 printed pages and 2 blank pages.
Republic of Namibia
MINISTRY OF EDUCATION, ARTS AND CULTURE
© MoEAC/DNEA 4322/1/17 [Turn over
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1 What do a bacteria and a virus have in common?
A both are capable of excretion
B both are capable of nutrition
C both can reproduce
D both can respire
2 The diagram shows a virus.
Which basic units make up X?
A amino acids
B fatty acids
C glucose
D glycerol
3 Which structures are found in both prokaryotic and eukaryotic cells?
A capsules
B endoplasmic reticulum
C mitochondria
D ribosomes
4 Which of the following is made up of a group of different tissues working together
to perform a particular function?
A epidermis
B mesophyll
C retina
D skin
5 Which substance is absorbed from the soil by plants to make chlorophyll?
A calcium ions
B magnesium ions
C nitrate ions
D phosphate ions
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6 A shortage of which nutrient will result in the deficiency disease goitre?
A iodine
B iron
C vitamin A
D vitamin C
7 A list of the types of micro-organisms is given below.
1 bacteria
2 fungi
3 protoctists
4 viruses
Which two types are essential in the production of single-cell protein?
A 1 and 2
B 1 and 4
C 2 and 3
D 3 and 4
8 Famine is a cause for increasing concern worldwide.
Which factor may contribute to famine?
A flooding
B food being distributed equally
C plenty of cultivated land being available
D the population decreasing
9 The diagram shows part of the human alimentary canal.
D A
In which part does emulsification take place?
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10 The diagram shows the liver and some related organs.
A B
D
C
Which tube transports a substance which plays a role in fat digestion?
11 The diagram shows the relationship between capillaries, cells and lymph vessels.
D C
direction of flow
Where will tissue fluid be found?
12 Which is an example of artificial immunity?
A antibodies produced by exposure to a disease
B antibodies produced by vaccination
C antibodies transferred through breast milk
D antibodies transferred through the placenta
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13 What does the following equation represent?
C6H12O6 + 6O2 6CO2 + 6H2O + energy
A aerobic respiration
B anaerobic respiration
C fermentation
D photosynthesis
14 During strenuous exercise, stiffness in the muscles is often caused by
A amino acids.
B fatty acids.
C hydrochloric acid.
D lactic acid.
15 Which change happens during exhalation?
A the diaphragm contracts
B the internal intercostal muscles contract
C the pressure decreases
D the thoracic volume decreases
16 The graph shows the volume of air exchanged during each breath at rest.
6
volume 4
of air in
lungs / dm3 3
0
15 30
time/sec
The volume of air inhaled during each breath is
A 0.5 dm3.
B 3.0 dm3.
C 3.5 dm3.
D 5.0 dm3.
17 Which term refers to the removal of metabolic waste from the body?
A assimilation
B egestion
C excretion
D ingestion
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18 Which of these substances is not a waste product of metabolism?
A carbon dioxide
B gastric juice
C urea
D water
19 The diagram shows the tip of a plant stem at the beginning of an experiment
and, after a few days, at the end of an experiment.
light proof
cover
light
beginning of end of
experiment experiment
What is the name given to the response shown?
A negative geotropism
B negative phototropism
C positive geotropism
D positive phototropism
20 Which hormones are involved in blood sugar regulation?
A adrenaline and oestrogen
B progesterone and insulin
C glucagon and testosterone
D insulin and glucagon
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21 Which part of the human eye prevents light being reflected in the eye?
A choroid
B iris
C retina
D sclera
22 On a hot day, mammals regulate their body temperature through
A increasing respiration.
B sweating less.
C vasoconstriction.
D vasodilation.
23 Which process is not a function of mitosis?
A binary fission
B cell repair
C gamete formation
D growth
24 How many daughter cells are formed when a cell undergoes mitosis?
A 1
B 2
C 3
D 4
25 Which term is an example of sexual reproduction?
A binary fission in bacteria
B seed formation in apples
C spore formation in fungi
D tuber formation in potatoes
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26 Which row correctly describes asexual reproduction?
number the offspring gametes
of parents produced are identical are produced
A 1 no yes
B 1 yes no
C 2 no yes
D 2 yes no
27 In a non-endospermic seed, the radicle will develop into the
A leaves.
B root.
C shoot.
D stem.
28 The burdock and sycamore seeds use different methods of dispersal.
Identify the correct methods from the list below.
burdock sycamore
A wind animal
B water self
C self water
D animal wind
29 Cross-pollination is defined as the transfer of pollen from
A an anther to a stigma on a different plant of a different species.
B an anther to a stigma on a different plant of the same species.
C a stigma to the anther on a different plant of a different species.
D a stigma to an anther on a different plant of the same species.
30 Which of the lists below is the correct sequence leading to pregnancy?
A fertilisation, implantation, menstruation
B implantation, ovulation, menstruation
C menstruation, fertilisation, ovulation
D ovulation, fertilisation, implantation
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31 The diagram shows two methods of birth control.
Which methods are shown?
A chemical and natural
B chemical and surgical
C mechanical and natural
D mechanical and surgical
32 Which is a symptom of gonorrhoea in men?
A damage to the liver
B fever in the body
C a rash on parts of the body
D discharge from the tip of the penis
33 What are the ideal environmental conditions for germination?
A cold, dry, no oxygen present
B cold, moist, oxygen present
C warm, dry, no oxygen present
D warm, moist, oxygen present
34 What name is given to the length of DNA which codes for a specific protein?
A allele
B chromosome
C gene
D phenotype
35 Which feature of a human is controlled by genes only?
A blood group
B height
C onset of puberty
D skin cancer
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36 The development of antibiotic resistant bacteria is an example of
A artificial selection.
B natural selection.
C selective breeding.
D vaccination.
37 Which micro-organisms play a major role in the nitrogen cycle?
A bacteria
B fungi
C protoctist
D viruses
38 What is an effect of deforestation?
A more erosion
B more species
C more transpiration
D more variety of habitats
39 In which phase is human population growth currently?
A lag phase
B log phase
C stabilising phase
D stationary phase
40 The environmental principle behind the recycling of paper is that
A it is a good way of earning money.
B littering contributes to ozone depletion.
C paper production is expensive.
D we wish to avoid felling too many trees.
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