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Learn What is Respiration Multiple Choice Questions (MCQ), What is Respiration quiz answers PDF to study o level biology online course for o level biology classes. Respiration in Biology Multiple Choice Questions and Answers (MCQs), What is Respiration quiz questions to learn online certificate courses. "What is Respiration MCQ" PDF Book: school level biology, human respiration, what is respiration, aerobic respiration and its waste test prep for free online college courses.

"Air pressure in thorax increases in" MCQ PDF: what is respiration with choices anaerobic respiration, inspiration, expiration, and digestion to learn online certificate courses. Study what is respiration quiz questions for merit scholarship test and certificate programs for college entrance exams.

MCQs on What is Respiration Quiz

MCQ: Air pressure in thorax increases in

anaerobic respiration

inspiration

expiration

digestion

MCQ: Blood entering the lungs contain very

little oxygen (O₂) only

high carbon dioxide (CO₂) only

low carbon dioxide (CO₂)

little oxygen (O₂) and high carbon dioxide (CO₂)

MCQ: In expiration in process of respiration

the diaphragm relaxes and arches upwards

air enters the lungs

ribs move upwards

sternum moves up and away from backbone

MCQ: Stimulus for breathing is

lack of oxygen in blood

excess of carbon dioxide in blood

contraction of alveoli

diaphragm movements

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

water

ethanol

lactic acid

carbon dioxide

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