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WorksheetsInfectious Diseases
Total questions: 19
Worksheet time: 10mins
Which statement best describes a communicable disease?
A disorder that never involves germs or pathogens
A disease that can spread from people, animals, or objects
A health condition that only affects one person
A condition that cannot pass between living things
A student touches a doorknob with flu virus and later gets sick. Which term explains how harm began in the body?
Disease, the general unhealthy condition
Infection, pathogens entered and multiplied
Germs, tiny organisms seen without tools
Bacteria, simple cells making their own food
Which pair correctly matches term and meaning?
Germ: a large organism visible without a microscope
Infection: body working at normal healthy levels
Communicable disease: cannot be passed between people
Disease: any condition harming normal function
A pathogen is different from other germs because it does what?
Helps the immune system
Causes disease in a host
Cleans the environment
Turns into healthy cells
Which environment would most likely increase fungal infections on skin?
Warm locker room with damp floors
Cold classroom with circulating air
Freezer storage with icy surfaces
Sunny dry field with low humidity
Which pairing correctly matches a pathogen group with a disease commonly caused by it?
Viruses — strep throat
Bacteria — cholera
Fungi — malaria
Protozoa — influenza
Which statement best defines a communicable disease for seventh-grade health science students?
An injury that happens during physical activity
A condition that never involves microorganisms
A disease that spreads from person to person
An illness caused by nonliving toxins only
What is a pathogen in the context of human health?
A vitamin that strengthens the immune system
A microorganism that can cause disease
A harmless cell found in healthy tissue
A protective protein produced by white blood cells
Which example best shows a sentence using both terms correctly: communicable disease and pathogen?
Communicable pathogens treat diseases with antibiotics
Communicable injuries are caused by exercise pathogens
Pathogens are vitamins that prevent communicable colds
A pathogen can cause a communicable disease like flu
What is an infection?
The healing process after a cut or scrape occurs
The spread of nutrients through the bloodstream
The vaccination that protects against a disease
The invasion and growth of pathogens in the body
Which disease would most likely be caused by a virus rather than bacteria?
Strep throat after sharing drinks
Influenza spread during winter months
Food poisoning from undercooked meat
Tuberculosis in crowded living spaces
A student gets a cut on their knee and later sees redness and swelling. Which explanation fits best?
Nutrient deficiency reducing skin thickness
Genetic disorder causing slow tissue growth
Infection from pathogens entering the wound
Noninfectious allergy causing local irritation
Which action is most effective to prevent mosquito-borne infections at home?
Ignore bites because they are not harmful
Open windows without screens every evening
Leave standing water in flowerpots outside
Wear long sleeves and use insect repellent
How do vaccines help reduce communicable diseases?
They kill all pathogens directly in the body
They train the immune system to recognize pathogens
They neutralize chemical toxins in the environment
They replace white blood cells lost during illness
Which description best differentiates bacteria from viruses relevant to infections?
Viruses are living cells that reproduce alone
Viruses are larger and have cell walls
Bacteria are cells; viruses need host cells
Bacteria require hosts; viruses make antibiotics
Which sign suggests your body is fighting an infection?
Normal body temperature and dry skin
Fever, inflammation, and white blood cell action
Decreased heart rate and slow breathing only
High energy levels and increased appetite
Which statement explains why handwashing reduces communicable disease spread?
Soap increases antibodies in the bloodstream
Soap removes pathogens from skin surfaces
Water destroys all viruses instantly
Rinsing hands warms them to kill bacteria
A kitchen shows two cutting boards: one used for raw chicken and one for fresh salad. What is the best practice to prevent cross-contamination before preparing the salad?
Use the same board for all foods
Wipe boards with a dry paper towel
Rinse boards quickly under cold water
Wash both boards with hot, soapy water
You are planning a picnic. Meat will be grilled, fruit will be sliced, and a cooler will carry drinks. Which plan best reduces foodborne illness risk?
Marinate meat on the picnic table surface
Leave cooler open for easy access
Slice fruit on the same raw meat board
Use separate utensils and chill foods promptly
