Practice Respiratory System RRB PYQ questions from Railway examinations, including RRB NTPC PYQ, RRB Group D PYQ, RRB JE PYQ, RRB ALP PYQ and RRB Technician PYQ. This topic-wise Biology question set covers important concepts related to the human respiratory system, respiratory organs, breathing and the exchange of gases.
The questions cover important areas such as the nose, nasal cavity, pharynx, larynx, trachea, bronchi, lungs, alveoli, diaphragm, breathing mechanism, inhalation and exhalation, exchange of oxygen and carbon dioxide, and cellular respiration. These concepts are important for General Science and Biology preparation for Railway examinations.
Start practicing Respiratory System RRB PYQs with answers and explanations and strengthen your Railway Biology preparation.
31
In humans, the respiratory pigment is:
RRB ALP & Technician
30/08/2018 (Shift-I)
2018
✓ Answer:DHaemoglobin
Haemoglobin is the iron-containing respiratory pigment in red blood cells that carries oxygen from the lungs to tissues.
32
Which life process converts chemical energy into heat energy?
RRB Group-D
01/10/2018 (Shift-I)
2018
✓ Answer:CRespiration
Cellular respiration releases the chemical energy stored in nutrients. Some is captured in ATP and some is released as heat.
33
The breakdown of glucose to pyruvate takes place in the _____ during energy production.
RRB ALP & Technician
30/08/2018 (Shift-III)
2018
✓ Answer:CCytoplasm
Glycolysis occurs in the cytoplasm and converts one glucose molecule into two pyruvate molecules.
34
What is aerobic respiration?
RRB JE
23/05/2019 (Shift-I)
2019
✓ Answer:BRespiration in the presence of oxygen
Aerobic respiration uses oxygen to release energy from food molecules.
35
The trachea is part of which of the following human systems?
RRB NTPC (Stage-I)
31/07/2021 (Shift-I)
2021
✓ Answer:DRespiratory system
The trachea is the windpipe. It conducts air from the larynx toward the bronchi and lungs as part of the respiratory system.
36
Where does the breakdown of pyruvic acid occur, using energy?
RRB Group-D
24/09/2018 (Shift-II)
2018
✓ Answer:CMitochondria
Aerobic oxidation of pyruvate occurs in mitochondria. The wording 'using energy' is imprecise: the overall pathway releases energy that can be captured in ATP.
37
The trachea is a part of the _____ system of the human body.
RRB NTPC (Stage-I)
05/03/2021 (Shift-II)
2021
✓ Answer:BRespiratory
The trachea is a respiratory passage that connects the larynx to the bronchi.
38
The incomplete breakdown of a substance in the absence of oxygen is called _____.
RRB Group-D
05/10/2018 (Shift-II)
2018
✓ Answer:BAnaerobic respiration
In school-level terminology, anaerobic respiration describes energy release without oxygen, often through incomplete breakdown of glucose by fermentation.
39
Exchange of respiratory gases occurs through _____ in the lungs.
RRB JE
28/05/2019 (Shift-III)
2019
✓ Answer:CAlveoli
Oxygen and carbon dioxide diffuse across the thin walls of the alveoli and their surrounding capillaries.
40
When our muscle cells lack oxygen during energy production, the six-carbon molecule is converted into a _____-carbon molecule.
RRB Group-D
18/09/2018 (Shift-III)
2018
✓ Answer:C3
Six-carbon glucose is broken down into three-carbon pyruvate; in oxygen-limited muscle cells, pyruvate is converted into three-carbon lactate.
Each question includes the correct answer and a clear explanation, helping you understand the concept behind the answer and revise important Biology topics effectively. Practising Respiratory System Previous Year Questions can also help you become familiar with the types of Biology questions asked in RRB examinations.
Whether you are preparing for RRB NTPC Respiratory System PYQ, RRB Group D Respiratory System PYQ, RRB JE Respiratory System PYQ, RRB ALP Respiratory System PYQ, or RRB Technician Respiratory System PYQ, practice these previous year questions regularly to strengthen your Biology preparation.
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