Breathing rate in humans at rest is:
Correct answer: D. 15 to 20 times per minute
- A. 10 to 15 times per minute
- B. 10 to 20 times per minute
- C. 80 to 120 times per minute
- D. 15 to 20 times per minute
Explanation
Correct option is D. Normal respiration rates for an adult person at rest is 15 to 20 breaths per minute. During exercise, the breathing rate becomes 21-24 times to supply more oxygen.
Last updated
About Human Respiratory System
The human respiratory system conducts air to the alveoli, where oxygen and carbon dioxide exchange occurs across thin respiratory surfaces. Questions cover the nasal passage, trachea, bronchi, lungs, diaphragm and intercostal muscles, ventilation mechanics and gas transport, while distinguishing breathing and gaseous exchange from cellular respiration.
Practise Respiration
446 free Respiration MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Biology questions like this
Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A complex cartilaginous structure surrounding the upper end of the trachea is called:
A condition in which there is a decrease of oxygen to the tissue despite adequate blood flow to the tissue is_________?
A series of C shaped cartilage rings are found in the wall of:
A surfactant is a secretory product that is composed of:
All of the following contain cartilage except:___________?