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What is Respiration MCQs Quiz Online PDF Download eBook

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"Air pressure in thorax increases in" Multiple Choice Questions (MCQ) on what is respiration with choices anaerobic respiration, inspiration, expiration, and digestion to learn online certificate courses. Practice what is respiration quiz questions for merit scholarship test and certificate programs for college entrance exams.

MCQs on What is Respiration PDF Download eBook

MCQ: Air pressure in thorax increases in

  1. anaerobic respiration
  2. inspiration
  3. expiration
  4. digestion


MCQ: Blood entering the lungs contain very

  1. little oxygen (O2) only
  2. high carbon dioxide (CO2) only
  3. low carbon dioxide (CO2)
  4. little oxygen (O2) and high carbon dioxide (CO2)


MCQ: In expiration in process of respiration

  1. the diaphragm relaxes and arches upwards
  2. air enters the lungs
  3. ribs move upwards
  4. sternum moves up and away from backbone


MCQ: Stimulus for breathing is

  1. lack of oxygen in blood
  2. excess of carbon dioxide in blood
  3. contraction of alveoli
  4. diaphragm movements


MCQ: In anaerobic respiration (without O2) in mammals, the wastes are

  1. water
  2. ethanol
  3. lactic acid
  4. carbon dioxide