MCQs on Respiratory System Class 10 Biology- Here, we will share important MCQs on Respiratory System Class 10 Biology. if you are searching for one word answers and MCQs on Respiratory System Class 10 Biology, then you are i the right place. queryexpress provides the best and important fill in the blanks, one word answers and MCQs on Respiratory System Class 10 Biology.
MCQs on Respiratory System Class 10 Biology
Also, Read
- 50 mcq on life processes class 10 Biology with answers
- One word answer on Life process Class 10 Biology Chapter 1
- Assertion and Reason Class 10 Chemistry Chapter 1
- Assertion and Reason for Class 10 Science Chapter 1 Chemical Reactions and Equations
- Reason and Assertion Questions for Class 10 Geography Chapter 1
- 50 Fill in the blanks for Class 10 Geography Chapter 1
- MCQs on Nutrition Class 10 Biology Chapter 1Life Process
- MCQs on Respiratory System Class 10 Biology
One word answers and MCQs on Respiratory System Class 10 Biology
What is the conversion of glucose to pyruvate called?
Answer: Glycolysis
Where does aerobic respiration occur in the cell?
Answer: Mitochondria
What is the three-carbon molecule produced from glucose?
Answer: Pyruvate
What type of organism performs anaerobic respiration to produce ethanol?
Answer: Yeast
What is produced along with ethanol in anaerobic respiration?
Answer: Carbon dioxide
What builds up in muscles during anaerobic respiration causing cramps?
Answer: Lactic acid
What is synthesized using the energy released during cellular respiration?
Answer: ATP
In which part of the plant does gas exchange occur?
Answer: Stomata
What is the major gas exchange activity in plants at night?
Answer: CO2 elimination
What structure do fish use to take up dissolved oxygen?
Answer: Gills
Through which body part do terrestrial animals primarily take in air?
Answer: Nostrils
Mcqs on respiration class 10 biology with answers
What ensures the air passage does not collapse in humans?
Answer: Cartilage
What are the balloon-like structures in the lungs called?
Answer: Alveoli
What respiratory pigment is present in human blood?
Answer: Hemoglobin
Which element has a high affinity for hemoglobin?
Answer: Oxygen
What is the conversion of ADP to ATP called?
Answer: Phosphorylation
How much energy is released when ATP is broken down?
Answer: 30.5 kJ/mol
How large is the alveolar surface area in square meters?
Answer: 80
What is used to drive endothermic reactions in cells?
Answer: ATP
What pigment is responsible for carrying oxygen in red blood cells?
Answer: Hemoglobin
Respiration MCQs Class 10 with answers PDF
What is the initial molecule that glucose is broken down into during respiration?
a) Ethanol
b) Lactic acid
c) Pyruvate
d) Carbon dioxide
Answer: c) Pyruvate
Where does glycolysis take place in the cell?
a) Mitochondria
b) Cytoplasm
c) Nucleus
d) Ribosome
Answer: b) Cytoplasm
What is produced during anaerobic respiration in yeast?
a) Lactic acid
b) Ethanol and carbon dioxide
c) Water and oxygen
d) ATP and pyruvate
Answer: b) Ethanol and carbon dioxide
Which molecule is converted to lactic acid during anaerobic respiration in muscle cells?
a) Glucose
b) Pyruvate
c) ATP
d) ADP
Answer: b) Pyruvate
Where does aerobic respiration occur in the cell?
a) Cytoplasm
b) Nucleus
c) Mitochondria
d) Ribosome
Answer: c) Mitochondria
Which process occurs in the absence of oxygen?
a) Aerobic respiration
b) Photosynthesis
c) Fermentation
d) Diffusion
Answer: c) Fermentation
What is the primary gas exchanged by plants at night?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Hydrogen
Answer: c) Carbon dioxide
What is the energy currency of the cell?
a) Glucose
b) ATP
c) NADH
d) Pyruvate
Answer: b) ATP
What helps filter air passing through the nostrils?
a) Blood vessels
b) Alveoli
c) Fine hairs and mucus
d) Cartilage rings
Answer: c) Fine hairs and mucus
Which structures in the lungs provide a large surface area for gas exchange?
a) Bronchi
b) Alveoli
c) Trachea
d) Diaphragm
Answer: b) Alveoli
What is the role of hemoglobin in respiration?
a) To break down glucose
b) To transport oxygen
c) To produce ATP
d) To filter air
Answer: b) To transport oxygen
What is the byproduct of anaerobic respiration in muscle cells?
a) Ethanol
b) Water
c) Lactic acid
d) Carbon dioxide
Answer: c) Lactic acid
Which type of respiration releases more energy?
a) Aerobic respiration
b) Anaerobic respiration
c) Fermentation
d) Diffusion
Answer: a) Aerobic respiration
How is carbon dioxide primarily transported in the blood?
a) As gas bubbles
b) Bound to hemoglobin
c) Dissolved in water
d) As solid particles
Answer: c) Dissolved in water
What ensures the air passage in the throat does not collapse?
a) Mucus
b) Cartilage rings
c) Blood vessels
d) Diaphragm
Answer: b) Cartilage rings
Which organism primarily uses gills for oxygen uptake?
a) Birds
b) Mammals
c) Fish
d) Insects
Answer: c) Fish
What is the major event during the day in plant gas exchange?
a) CO2 release
b) Oxygen release
c) Nitrogen uptake
d) Water absorption
Answer: b) Oxygen release
What is the end product of glycolysis?
a) ATP
b) ADP
c) Pyruvate
d) Oxygen
Answer: c) Pyruvate
How much energy is released from the breakdown of one ATP molecule?
a) 20.5 kJ/mol
b) 30.5 kJ/mol
c) 40.5 kJ/mol
d) 50.5 kJ/mol
Answer: b) 30.5 kJ/mol
What drives the endothermic reactions in the cell?
a) Glucose
b) ATP
c) Oxygen
d) Carbon dioxide
Answer: b) ATP
Respiration class 10 fill in the blanks questions and answers
The process of breaking down glucose into pyruvate is called __.
Answer: glycolysis
Glycolysis occurs in the __ of the cell.
Answer: cytoplasm
Aerobic respiration takes place in the __ of the cell.
Answer: mitochondria
In yeast, anaerobic respiration produces ethanol and __.
Answer: carbon dioxide
In muscle cells, pyruvate is converted into __ during anaerobic respiration.
Answer: lactic acid
The molecule that stores and provides energy for cellular processes is called __.
Answer: ATP
Plants exchange gases through small openings called __.
Answer: stomata
The primary gas exchange activity in plants at night involves the elimination of __.
Answer: carbon dioxide
Fishes use __ to take up dissolved oxygen from water.
Answer: gills
The balloon-like structures in the lungs where gas exchange occurs are called __.
Answer: alveoli
The respiratory pigment in human blood that has a high affinity for oxygen is __.
Answer: hemoglobin
During the breathing cycle, the __ becomes larger when we breathe in.
Answer: chest cavity
The air passage in the throat is kept from collapsing by structures called __.
Answer: cartilage rings
Carbon dioxide is primarily transported in the blood in __ form.
Answer: dissolved
The alveolar surface area in the lungs covers approximately __ square meters.
Answer: 80
The end product of glycolysis is a three-carbon molecule called __.
Answer: pyruvate
The energy released during the breakdown of ATP is equivalent to __ kJ/mol.
Answer: 30.5
Terrestrial animals primarily take in air through their __.
Answer: nostrils
Plants use the oxygen produced during __ for respiration during the day.
Answer: photosynthesis
The energy currency of the cell, ATP, is synthesized from __ and inorganic phosphate.
Answer: ADP