10th Class Biology Important Objective MCQs Notes
Choose the correct answer from the following choices:
- The process of gaseous exchange involves;
Breakdown of C-H bonds to yield energy
Physical movements that take air in and out of body
Getting oxygen from the air and removing carbon dioxide
Transport of oxygen by the blood to different parts of the body
- Most of the gaseous exchange in a leaf occurs through;
- How many bronchi are there in the air passageway?
- Where does the gaseous exchange occur in humans?
- Which structure actively helps in taking the air out of lungs?
- The primary chemical stimulus for breathing is the concentration of;
Carbon dioxide in blood
Oxygen in blood
Carbon dioxide in muscles
Oxygen in muscles
- Point out the FALSE statement about respiration;
Gases can easily pass through the walls of the alveoli
Gas exchange in lungs is very efficient because lungs provide
large surface area
In emphysema the walls of alveoli break and there is more surface area
Dust particles can damage the lung by irritating the inner alveoli surface
- A disease involving the breakdown of air sacs of the lungs is;
- Which process does NOT occur in the nasal cavity?
Trapping of large dust particles
Humidification of the inhaled air
Warming of the inhaled air
Exchange of gases
- What type of blood vessels surrounds the alveoli?
11.Antibiotics are used for the;
Treatment of viral infections
Treatment of bacterial infections
Immunization against infections\
Both ’a and ’b’
- The substances used for the treatment, cure, prevention or diagnosis of disease are called;
- Aspirin is categorized as;
A drug from animals
A synthetic drug
A drug from plants
A drug from minerals
- The drugs used to reduce pain are known as;
- Which of the following drugs is obtained from plants?
- Which of these addictive drugs are also used as painkillers?
All can be used
- Sulfonamides affect bacteria in the following way;
Break the cell wall
Inhibit protein synthesis
Stop the synthesis of new cell wall
Stop the synthesis of folic acid
- What is true about vaccines?
Protect against the future viral and bacterial infections
Treat the existing bacterial infections only
Treat existing infections and also protect against future infections
Protect against viral infections only