Questions
Question 1 Multiple Choice (Single Answer)
In which of the following is the maximum amount of oxygen lost from blood?
- Arteries of body
- Capillaries surrounding the alveoli
- Left auricle of heart
- Capillaries surrounding the tissues
Question 2 Multiple Choice (Single Answer)
What happens to glucose during strenuous exercise?
- It is converted to glycogen.
- It is converted to pyruvic acid.
- It is converted to starch.
- It is converted to lactic acid.
Question 3 Multiple Choice (Single Answer)
Glycolysis is a part of
- anaerobic respiration
- aerobic respiration
- both aerobic and anaerobic respiration
- Krebs cycle
Question 4 Multiple Choice (Single Answer)
Hiccups are due to the activity of
- intercostal muscles
- food in air tract
- diaphragm
- inadequate oxygen in atmosphere
Question 5 Multiple Choice (Single Answer)
Krebs' cycle occurs in
- cytoplasm
- mitochondria
- chloroplast
- endoplasmic reticulum
Question 6 Multiple Choice (Single Answer)
Why do gases diffuse over the respiratory surface?
- Because pO2 is more in alveoli than in blood.
- Because pO2 is more in blood than in tissues.
- Because pCO2 is less in alveoli than in blood.
- Because pCO2 is less in blood than in tissues.
Question 7 Multiple Choice (Single Answer)
Which of the following respires through gills?
- Crocodile
- Whale
- Prawn
- Frog
Question 8 Multiple Choice (Single Answer)
Which of the following prevents the entry of food in wind pipe?
- Glottis
- Epiglottis
- Larynx
- Pharynx
Question 9 Multiple Choice (Single Answer)
At high altitudes, the RBCs in human blood
- increase in number
- decrease in number
- decrease in size
- increase in size
Question 10 Multiple Choice (Single Answer)
Which of the following types of respiration is performed by a frog during hibernation?
- Pulmonary respiration
- Cutaneous respiration
- Bucco–pharyngeal respiration
- Both cutaneous and pulmonary respiration