Science Practice Quiz 53

Q1.How do plants primarily exchange gases like carbon dioxide and oxygen?

A. Through roots by active transport. B. Through stomata by diffusion. C. Through lenticels by osmosis. D. Through bark by facilitated diffusion.

Q2.From which molecules is an ATP molecule made, utilizing the energy released during respiration?

A. Glucose and oxygen. B. ADP and inorganic phosphate. C. Carbon dioxide and water. D. Lactic acid and pyruvate.

Q3.What is the carbon structure of a lactic acid molecule?

A. One-carbon molecule. B. Two-carbon molecule. C. Three-carbon molecule. D. Six-carbon molecule.

Q4.What are the balloon-like structures in the lungs where the exchange of gases takes place?

A. Bronchioles B. Trachea C. Alveoli D. Diaphragm

Q5.Which structures in the lungs are characterized by walls containing an extensive network of blood vessels to facilitate gas exchange?

A. Bronchi B. Trachea C. Alveoli D. Larynx

Q6.During inhalation, which of the following actions correctly describes the changes in the human body?

A. Ribs move down, diaphragm contracts B. Ribs lift, diaphragm flattens C. Ribs lift, diaphragm arches D. Ribs move down, diaphragm flattens

Q7.In the alveoli, how is oxygen transported to the body cells and carbon dioxide released?

A. Oxygen is released from blood into alveoli, carbon dioxide is absorbed by blood B. Oxygen is taken up by blood from alveoli, carbon dioxide is released into alveoli C. Both oxygen and carbon dioxide are released into alveoli D. Both oxygen and carbon dioxide are absorbed by blood from alveoli

Q8.Why do the lungs always contain a residual volume of air during the breathing cycle?

A. To prevent the lungs from collapsing B. To maintain lung pressure C. To provide sufficient time for gas exchange D. To increase the capacity of the lungs

Q9.For animals with a large body size, what mechanism supplements diffusion pressure for oxygen delivery to all parts of the body?

A. Increased lung capacity B. Faster heart rate C. Respiratory pigments D. Enhanced muscular contractions

Q10.Which of the following is the respiratory pigment found in human beings?

A. Myoglobin B. Chlorophyll C. Haemoglobin D. Carotenoid

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Science Practice Quiz 53