Human Body, Health & Hygiene Quiz

A scientist observes that whenever garbage is left uncovered in a neighbourhood, there’s an increase in certain diseases. Based on this, which diseases might increase due to the presence of uncovered garbage?

1. Cholera and Dysentery
2. Typhoid and Malaria
3. Worm infections and Measles
4. Chickenpox and Rabies

Answer: (a) Cholera and Dysentery

A village experiences an outbreak of waterborne illnesses. The health department advises villagers to use chlorine tablets in their drinking water. Why would chlorine tablets be helpful in this situation? A. They kill pathogens present in the water that cause illness. B. They remove large particles, making the water clear and safe to drink. C. They increase the nutrient content of water, making it healthier.

1. A only
2. A and B only
3. B and C only
4. A, B and C

Answer: (a) A only

Which of the following structures are classified as organs in the human body? 1. Muscle 2. Skin 3. Liver 4. Ligament

1. 1 and 2
2. 2 and 3
3. Only 3
4. 3 and 4

Answer: (b) 2 and 3

When Tina’s body gets too hot from playing outside, she starts to sweat to cool down. Which two systems work together in this situation?

1. Circulatory and excretory systems
2. Nervous and respiratory systems
3. Endocrine and skeletal systems
4. Digestive and muscular systems

Answer: (a) Circulatory and excretory systems

Infectious diseases can be transmitted through various means, including direct contact, contaminated surfaces, and vectors like mosquitoes. Which of the following modes of transmission are accurately associated with infectious diseases? A. Inhalation of respiratory droplets B. Transmission through insect bites C. Indirect contact with infected surfaces

1. A only
2. A and B only
3. B and C only
4. A, B and C

Answer: (d) A, B and C

Sara finds that her friend regularly has skin infections after swimming in a public pool. Which reason best explains why?

1. Skin infections are caused by dry skin from pool water.
2. People who swim are more likely to catch airborne viruses.
3. Public pools can contain germs, especially if not properly sanitised.
4. The chlorine in pools causes bacteria to spread on the skin.

Answer: (c) Public pools can contain germs, especially if not properly sanitised.

During a science experiment, students were asked to investigate the function of different organ systems in the body. They placed their hand close to a hot object and quickly moved it away upon feeling the heat. What does this experiment demonstrate? 1. The nervous system only works with the muscular system in emergencies. 2. The muscular system senses danger and responds quickly to protect the body. 3. Nerves in the hand detect heat and send a message to the brain. 4. The nervous system helps control involuntary actions to prevent injury.

1. 1 and 2
2. 2 and 3
3. 2, 3 and 4
4. 2 and 4

Answer: (d) 2 and 4

In an experiment, a student places three petri dishes containing agar gel in different environments to observe bacterial growth: - Petri dish A is left open to the air indoors. - Petri dish B is placed outside in a garden. - Petri dish C is covered and kept inside. After a week, bacterial colonies grow in Petri dishes A and B, but not in C. What conclusion can be drawn from this experiment?

1. Bacteria only grow in outdoor environments.
2. Bacterial growth is dependent on exposure to the environment.
3. Agar gel prevents bacterial growth when covered.
4. Bacteria require sunlight to grow.

Answer: (b) Bacterial growth is dependent on exposure to the environment.

The following diagram shows a flowchart tracing the infection path of a specific disease within a population. The disease spreads through airborne particles and typically causes symptoms like a high fever and respiratory distress. Which of the following diseases does this diagram most likely represent?

1. Typhoid
2. Malaria
3. Amoebic dysentery
4. Tuberculosis

Answer: (d) Tuberculosis

Consider the passage given below and answer the following question. Understanding How Diseases Spread Diseases can spread from one person to another through various modes of transmission, each involving different factors. One common method is direct contact, which includes physical interactions such as touching or hugging someone who is infected. Diseases like chickenpox and the flu spread easily this way. Another method is airborne transmission, where diseases spread through droplets when an infected person coughs, sneezes, or even talks. Measles and tuberculosis are examples of diseases that can spread through the air. Diseases can also spread through indirect contact, which involves touching contaminated surfaces or objects. For example, if someone with a cold sneezes on a doorknob, the virus can remain on that surface, infecting others who touch it and then touch their face. Another important mode is vector-borne transmission, where insects like mosquitoes carry diseases from one person to another. Malaria and dengue fever spread this way, as mosquitoes become infected when they bite an infected person and then carry the disease to others. Understanding these transmission modes helps us take specific precautions, like washing hands, covering coughs, and avoiding mosquito bites, to reduce the spread of diseases. Why might airborne transmission be more likely to infect multiple people in a crowded indoor setting compared to an outdoor setting?

1. Indoors, droplets can spread more widely, covering larger areas
2. Outdoors, droplets remain in the air longer and infect fewer people
3. In an indoor setting, droplets from an infected person remain suspended in the air for longer, increasing the chance of exposure
4. Droplets are absorbed by outdoor air, making them harmless

Answer: (c) In an indoor setting, droplets from an infected person remain suspended in the air for longer, increasing the chance of exposure