O Level

Biology MCQs

O Level Biology MCQs - Subtopic

What is Respiration MCQ with Answers

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What is Respiration Multiple Choice Questions (MCQ) to practice what is respiration quiz answers PDF, O level biology worksheets for online degrees. Solve respiration in biology Multiple Choice Questions and Answers (MCQs), "What is Respiration" quiz questions and answers to learn online certificate courses. Learn 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" Multiple Choice Questions (MCQ) on what is respiration with choices anaerobic respiration, inspiration, expiration, and digestion to learn online certificate courses. Solve what is respiration quiz questions for merit scholarship test and certificate programs for college entrance exams.

MCQs on What is Respiration

1.

Air pressure in thorax increases in

anaerobic respiration
inspiration
expiration
digestion

2.

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)

3.

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

4.

Stimulus for breathing is

lack of oxygen in blood
excess of carbon dioxide in blood
contraction of alveoli
diaphragm movements

5.

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

water
ethanol
lactic acid
carbon dioxide

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