MCQ Class 7 Science Chapter 6 Respiration in Organisms Advertisement MCQ’s For All Chapters – Science Class 7th 1. Sometimes when we do heavy exercise, anaerobic respiration takes place in our muscle cells. What is produced during this process?alcohol and lactic acidalcohol and CO2lactic acid and CO2lactic acid onlyYour comments:Question 1 of 102. Yeast is used in wine and beer industries because it respires.aerobically producing oxygenaerobically producing alcoholanaerobically producing alcoholanaerobically producing CO2Your comments:Question 2 of 103. During the process of exhalation, the ribs movedown and inwardsup and inwardsdown and outwardsup and outwardYour comments:Question 3 of 104. Breathing is a process that (i) provides O2 to the body. (ii) breaks down food to release energy. (iii) helps the body to get rid of CO2(iv) produces water in the cells. Which of the following gives the correct combination of functions of breathing?(I) and (II)(II) and (III)(I) and (III)(I) and (IV)Your comments:Question 4 of 105. Which are the gases involved in breathing?O2 and NO2O2 and SO2O2 and O3O2 and CO2Your comments:Question 5 of 106. Name the organ of the body in which the blood is oxygenated.HeartLungsLeverPancreasYour comments:Question 6 of 107. After heavy exercise, due to the accumulation of which substance we get muscle cramps ?Malaic acidFumaric acidLipoic acidLactic acidYour comments:Question 7 of 108. Yeasts are used inUsed to make wine & beerleaveningBoth A & Bnone of theseYour comments:Question 8 of 109. In the following figure of respiratory system organs labelled by 1 and 2 are respectively: Tracheae, LungsLungs, TracheaeNasal cavity, LungsLungs, Nasal cavityYour comments:Question 9 of 1010. Breathing rate in human beings in normal condition is12-16 times in a minute15-18 times in a minute18-22 times in a minute22-25 times in a minuteYour comments:Question 10 of 10 Loading...
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