मराठी

Sometimes when we do heavy exercise, anaerobic respiration takes place in our muscle cells. What is produced during this process? - Science

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प्रश्न

Sometimes when we do heavy exercise, anaerobic respiration takes place in our muscle cells. What is produced during this process?

पर्याय

  • alcohol and lactic acid

  • alcohol and CO2

  • lactic acid and CO2

  • lactic acid only

MCQ

उत्तर

lactic acid only

Explanation:

When we do heavy exercise our body does not get enough oxygen to produce the required energy. To get additional energy, anaerobic respiration occurs within our muscle cells. In this process, there occurs a partial breakdown of glucose to produce lactic acid. The accumulation of lactic acid in the body causes muscular cramps.

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पाठ 9: Soil - MULTIPLE CHOICE QUESTIONS [पृष्ठ ५२]

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एनसीईआरटी एक्झांप्लर Science [English] Class 7
पाठ 9 Soil
MULTIPLE CHOICE QUESTIONS | Q 1. | पृष्ठ ५२
एनसीईआरटी एक्झांप्लर Science [English] Class 7
पाठ 10 Respiration in Organisms
MULTIPLE CHOICE QUESTIONS | Q 1. | पृष्ठ ५२

संबंधित प्रश्‍न

Cellular respiration takes place in
(a) Lysosome
(b) Chlorophyll
(c) Mitochondria
(d) Ribosome


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Trace the movement of oxygenated blood in the body.


Name one substance which is produced in anaerobic respiration by an organism but not in aerobic respiration.


What is the other name of wind-pipe?


Fill in the following blank with suitable word:

The actual exchange of gases takes place in the ___________ of the lungs.


Why do the walls of trachea not collapse when there is less air in it?


Which of the following increases in muscle cells when they are lacking in oxygen?


Which of the following is the correct sequence of air passage during inhalation?

(a) nostrils → larynx → pharynx → trachea → lungs
(b) nasal passage → trachea → pharynx → larynx → alveoli
(c) larynx → nostrils → pharynx → lungs
(d) nostrils → pharynx → larynx → trachea → alevoli


During marathon, we sometimes get painful contractions of leg muscles due to the accumulation of one of the following in leg muscles. This is:


Veins and arteries carry blood. Which of these carry blood away from the heart?


There is a pair of bean-shaped organs P in the human body towards the back, just above the waist. A waste product Q formed by the decomposition of unused proteins in the liver is brought into organ P through blood by an artery R. The numerous tiny filters S present in organ P clean the dirty blood by removing the waste product Q. The clean blood goes into circulation through a vein T. The waste substance Q, other waste salts, and excess water form a yellowish liquid U which goes from organ P into a bag-like structure V through two tubes W. This liquid is then thrown out of the body through a tube X.
(a) What is (i) organ P, and (ii) waste substance Q?
(b) Name (i) artery R, and (ii) vein T.
(c) What are tiny filters S known as?
(d) Name (i) liquid U (ii) structure V (iii) tubes W, and (iv) tube X.


A student has set up "CO2 is released during respiration”. After about 1 hour he observes no change in the water level in the delivery tube. Write two possible resons for the failure of the experiment. 


Choose the odd one out in the following groups of four items each:

Trachea, Bronchus, Alveolus, Diaphragm


Choose the odd one out in the following groups of four items each:

Diffusion, Respiratory gases, Alveoli, Capillary network


Given below is an overall chemical reaction of a certain process:

C6H12O6 →LacticAcid+2ATP+Heat energy

Name the process.


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What is meant by :

  1. Residual air and
  2. Dead air space

How does aerobic respiration differ from anaerobic respiration?


The exchange of gases in the leaves takes place with the help of __________.


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