Science Practice Quiz 183

Q1.During heavy exercise, cramps in the legs are caused by the accumulation of which substance?

A. carbon dioxide B. lactic acid C. alcohol D. water

Q2.What is the normal range of breathing rate per minute for an average adult person at rest?

A. 9–12 B. 15–18 C. 21–24 D. 30–33

Q3.What movement do the ribs perform during exhalation?

A. move outwards B. move downwards C. move upwards D. do not move at all

Q4.Which of the following is associated with Yeast?

A. Earthworm B. Gills C. Alcohol D. Chest cavity

Q5.The Diaphragm is primarily associated with which body part or cavity?

A. Gills B. Alcohol C. Chest cavity D. Stomata

Q6.Which organism primarily uses its skin for respiration?

A. Earthworm B. Fish C. Frog D. Yeast

Q7.Which structures on leaves are involved in gas exchange?

A. Gills B. Stomata C. Tracheae D. Lungs

Q8.Which respiratory organs are found in fish?

A. Lungs B. Gills C. Skin D. Spiracles

Q9.Which respiratory organs are used by frogs?

A. Gills only B. Lungs only C. Skin only D. Lungs and skin

Q10.What happens to the breathing rate of a person during heavy exercise?

A. It slows down significantly. B. It remains unchanged. C. It increases. D. It becomes irregular.