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Question-1
Malaria is caused by a:
(A)
Protozoan
(B)
Fungi
(C)
Virus
(D)
Bacteria
Question-2
Milk that can remain on supermarket shelves, free of microbial growth, for may years has been processed by which of the following methods?
(A)
Use of humectants
(B)
Using antibiotics in animal feed
(C)
Sequestrants
(D)
Aseptic processing
Question-3
What does vector mean in mode transmission?
(A)
Insect
(B)
First line of defence
(C)
30 seconds to 1 minute
(D)
Infectious agents
Question-4
Pasteurization involves the:
(A)
Exposure of food to high temperatures for short periods to destroy harmful microorganisms
(B)
Exposure of food to heat to inactivate enzymes that cause undesirable effects in foods during storage
(C)
Fortification of foods with vitamins A and D
(D)
Use of irradiation to destroy certain pathogens in foods
Question-5
The organisms used in the process of fermentation:
(A)
Metabolize all the oxygen in food
(B)
Produce water in the food
(C)
Utilize all the nutrients in a food
(D)
Produce products, such as acids, that inhibit the growth of other organisms
Question-6
A good second line of defence is:
(A)
Hospital acquired infections
(B)
Washing of hands
(C)
Immunization
(D)
Infectious agents
Question-7
A biological method of food preservation is:
(A)
Freezing
(B)
Drying
(C)
Fermentation
(D)
Adding salt
Question-8
The following viruses are associated with congenital infection EXCEPT :
(A)
Rubella virus
(B)
CMV
(C)
Parvovirus B – 19
(D)
RSV
Question-9
AIDS is due to:
(A)
Reduction in number of helper T - cells
(B)
Reduction in number of killer T - cells
(C)
Auto - immunity
(D)
Non - production of interferon's
Question-10
With regard to the stages of syphilis:
(A)
The characteristic chancre of primary - stage syphilis will go away by itself even if left untreated .
(B)
Secondary - stage syphilis is characterized by a painful rash and severe itching.
(C)
Neurosyphilis may develop during latent syphilis.
(D)
Primary - stage syphilis often involves mental changes categorized as insanity.
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Cambridge Secondary Grade 9
IGCSE
Practice in Related Chapters
The Interdependence of Living Organisms
Feeding
Keeping Healthy
Transport in Plants
Classification
Cells and Tissues
Movement in and out of Cells
Personal Health
Animal Nutrition
Reproduction
Sensitivity
Cells the Building Blocks
Genetics
The Skeleton, Muscles and Movement
A Sexual Reproduction and Cloning Plants
The Senses
Survival
Co-ordination
Energy for Respiration
The Chemicals of Living Cells
How Substances Get In and Out of Cells
Plants for Food
Photosynthesis and Nutrition in Plants
Plant Structure and Function
Food and Diet
The Human Impact on the Environment
Digestion, Absorption and Use of Food
The Blood Circulatory System
Breathing
Excretion and the Kidneys
Human Reproduction
Classification
Conservation
Micro Organisms
Reproduction in Flowering Plants
Movement and Locomotion
Growth and Development
Disease: causes, transmission and control
Ecosystems
Population
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