ZIMBABWE SCHOOL EXAMINATIONS COUNCIL
General Certificate of Education Ordinary Level
**BIOLOGY**
**PAPER 1 Multiple Choice** **NOVEMBER 2022 SESSION** **1 hour**
Additional materials: Multiple Choice answer sheet Soft clean eraser Soft pencil (type B or HB is recommended)
TIME 1 hour
INSTRUCTIONS TO CANDIDATES
Do not open this booklet until you are told to do so. Write your name, centre number and candidate number on the answer sheet in the spaces provided unless this has already been done for you.
There are forty questions in this paper. Answer all questions. For each question, there are four possible answers, A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate answer sheet.
Read very carefully the instructions on the answer sheet.
INFORMATION FOR CANDIDATES
Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet.
Question 1
Which branch of Biology involves the study of hereditary traits?
A anatomy
B physiology
C genetics
D zoology
Question 2
Which statement is not a laboratory safety rule?
A Use equipment for its intended use.
B Tie back long hair and loose clothing.
C Wear safety googles when pouring liquids.
D Place the measuring cylinder on a flat surface.
Question 3
The diagram shows the formation of a lipid.
Q fatty acids
What is Q?
A glucagon
B glucose
C glycogen
D glycerol
Question 4
The diagrams show an experiment to determine nutrients in a food sample. Which test tube, A, B, C or D, had the highest amount of reducing sugar?
Question 5
Which one is a result of water being polar?
A reagent in photosynthesis
B product of respiration
C high thermal capacity
D most dense at \(4^{\circ} \mathrm{C}\)
Question 6
The diagram shows four specialised cells. Which cell, A, B, C or D, is specialised for contraction?
A
B
C
D
Question 7
Which one is a characteristic of a sperm?
A lobed nucleus
B numerous mitochondria
C granulated cytoplasm
D large size
Question 8
The diagram shows an animal cell.
In which part, A, B, C or D, does anaerobic respiration take place?
Question 9
What stops salivary amylase activity in the stomach?
A low enzyme concentration
B low substrate concentration
C low temperature
D low pH
Question 10
Which enzyme should be included in a detergent to remove a cream stain?
A catalase
B lipase
C amylase
D protease
Question 11
A student carried out an experiment using pieces liver, water and hydrogen peroxide, to investigate enzyme activity. Two of the pieces of liver were fresh and two were boiled.
In which test tube did the combination produce bubbles?
A fresh liver and hydrogen peroxide
B boiled liver and hydrogen peroxide
C fresh liver and water
D boiled liver and water
Question 12
Which one is a method of artificial vegetative reproduction in plants?
A suckers
B cuttings
C runners
D bulbs
Question 13
A reddish powdery substance was observed on the surfaces of tomato leaves and stems. This is a sign of
A tissue eating pest.
B sap sucking pest.
C bacterial wilt disease.
D fungal rust disease.
Question 14
The diagram shows the cross section through a dicotyledonous leaf. Which part, A, B, C or D, contains the vascular bundles?
Question 15
The diagram shows an experiment to investigate water loss from leaves. Which leaf, A, B, C or D, lost the least water?
Question 16
The diagram shows a section of a dicotyledonous stem. Which part, A, B, C or D, is responsible for translocation?
Question 17
Which one is not a function of the liver?
A production of bile
B breakdown of glycogen
C excretion of urea
D storage of vitamins
Question 18
Which disease is not caused by smoking tobacco?
A bronchitis
B pneumonia
C lung cancer
D emphysema
Question 19
The diagram shows a section of the human eye.
Which numbered part is light sensitive?
A 1
B 2
C 3
D 4
Question 20
The diagram shows the human kidney. Which part, A, B, C or D, is the cortex?
Question 21
The diagram shows the structure of the human skin. Which part, A, B, C or D, acts as an insulator?
Question 22
The diagram shows the relative positions of the liver, gut and associated blood vessels. Which blood vessel, A, B, C or D, has the highest concentration of glucose?
Question 23
The diagram shows the structure of the ear. Which part, A, B, C or D, vibrates due to sound?
Question 24
The diagram shows a section through the heart. In which chamber, \(\mathbf{A}, \mathbf{B}, \mathbf{C}\) or \(\mathbf{D}\), is the highest pressure developed during a heart beat?
Question 25
The diagram shows the male reproductive system. Which part, A, B, C or D, is removed during circumcision?
Question 26
Active immunity is a result of
A breastfeeding.
B infection by pathogens.
C injection with antibodies.
D transfer of antibodics.
Question 27
Items (i) to (v) are stages in recombinant DNA technology in random order. (i) cut out the allele using enzymes (ii) check that the new allele is acquired (iii) identify allele for the desired characteristic (iv) allow the bacterium to reproduce (v) insert the allele into a bacterium
Which one is the correct sequence of the stages?
A (i), (ii), (iii), (iv), (v)
B (iii), (i), (v), (ii), (iv)
C (ii), (v), (iv), (iii), (i)
D (v), (iv), (iii), (ii), (i)
Question 28
Which statement refers to viruses only?
A They contain nucleic acids.
B They reproduce only inside living cells.
C They can only be seen using a microscope.
D They are parasitic and pathogenic.
Question 29
Which cancer is caused mainly by exposure to radiation?
A lung cancer
B skin cancer
C prostate cancer
D breast cancer
Question 30
Albinism is a result of
A dietary deficiencies.
B genetic disorder.
C environmental factors.
D chromosomal abnormality.
Question 31
In cattle, the allele for horns is dominant to that for hornless. A horned bull was mated with a hornless cow. Which ratio of offspring is expected if the bull was heterozygous?
A 1 horned : 1 hornless
B 3 horned : 1 hornless
C all hornless
D all horned
Question 32
Which characteristic is an example of continuous variation?
A blood groups