Match the columns: A B (i) Glycolysis (a) Fermentation (ii) Human muscles (b) 3-carbon compound (iii) Mitochondria (c) Gills (iv) Yeast (d) Epiglottis (v) Pyruvate (e) Cytoplasm (vi) Fish (f) Lactic acid (vii) Larynx (g) Lungs (viii) Trachea (h) Balloon-like structures (ix) Mammals (i) Cartilage rings (x) Alveoli (j) ATP synthesis

(i)-(e) Glycolysis is the first phase of cellular respiration which involves the breakdown of glucose into two molecules of pyruvate. This pathway occurs in the cytoplasm of the cell. (ii)-(f) Lactic acid gets accumulated in human muscle cells during intense exercise or physical activity. This condition takes place when the oxygen levels drop and the cells undergo anaerobic respiration. (iii)-(j) The mitochondria are called the powerhouse of the cell since most of the energy production occurs here. The inner mitochondrial membrane is the site for ATP (adenosine triphosphate) synthesis in the cell. (iv)-(a) Yeasts are unicellular fungi that are involved in the process of fermentation. In this process, sugar is converted into ethanol and carbon dioxide in the absence of oxygen. (v)-(b) Pyruvate is a 3-carbon compound. It is the end product of glycolysis. In this process, 6-carbon glucose molecule is converted into two 3-carbon pyruvate molecules. (vi)-(c) Gills are the respiratory organs in fishes. Gills are branched, feather-like structures present on either side of the head. These are richly supplied with capillaries and facilitate the exchange of gases between the body and the surrounding water. (vii) -(d) Larynx is a hollow tubular structure, also called the voice box. It is a part of the respiratory tract that leads to the trachea. Epiglottis is a flap-like structure present over the opening of the larynx that prevents the entry of food and allows air to pass through the larynx. (viii) -(i) Trachea is a cartilaginous tubular structure, also called the windpipe. The walls of the trachea are supported by 16-20 cartilage rings that prevent it from collapsing. The trachea divides into two air tubes called the bronchi. (ix)-(g) Lungs are the major respiratory organs in mammals. These are a pair of air-filled, spongy structures located in the chest cavity. The actual gaseous exchange occurs in the tiny air sacs called alveoli that are present inside the lungs. (x)-(h) Alveoli are tiny, balloon-like structures that are filled with air. Each alveolus is wrapped with a web of blood capillaries. There are millions of alveoli inside the lungs, and these are the site of gaseous exchange. A B (i) Glycolysis (e) Cytoplasm (ii) Human muscles (f) Lactic acid (iii) Mitochondria (j) ATP synthesis (iv) Yeast (a) Fermentation (v) Pyruvate (b) 3-carbon compound (vi) Fish (c) Gills (vii) Larynx (d) Epiglottis (viii) Trachea (i) Cartilage rings (ix) Mammals (g) Lungs (x) Alveoli (h) Balloon-like structures

Match the entries of Column 1 with those of Column 2. Column 1 Column 2 a. Small intestine i. Gall bladder b. Large intestine ii. Amylase c. Pancreas iii. Colon d. Liver iv. Duodenum

(a- iv), (b- iii), (c- ii), (d- i)

(a- iii), (b- ii), (c- i), (d- iv)

(a- i), (b- ii), (c- iii), (d- iv)

(a- iv), (b- iii), (c- i), (d- ii)

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The sports teacher of the class punished Rohan with $300$ sit-ups. Next day, Rohan felt extreme muscle pain in his legs. This pain is due to the

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Important Questions on Life Processes

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10th CBSE

IMPORTANT

Science Textbook of Competency Based Questions for Class X>Chapter 6 - Life Processes>Exercise>Q 44

How will you prove that carbon dioxide is produced during fermentation?

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10th CBSE

IMPORTANT

Science Textbook of Competency Based Questions for Class X>Chapter 6 - Life Processes>Exercise>Q 45

Match the columns:

A	B
(i) Glycolysis	(a) Fermentation
(ii) Human muscles	(b) 3-carbon compound
(iii) Mitochondria	(c) Gills
(iv) Yeast	(d) Epiglottis
(v) Pyruvate	(e) Cytoplasm
(vi) Fish	(f) Lactic acid
(vii) Larynx	(g) Lungs
(viii) Trachea	(h) Balloon-like structures
(ix) Mammals	(i) Cartilage rings
(x) Alveoli	(j) ATP synthesis

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10th CBSE

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Science Textbook of Competency Based Questions for Class X>Chapter 6 - Life Processes>Exercise>Q 46

Select the odd one out.

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10th CBSE

IMPORTANT

Science Textbook of Competency Based Questions for Class X>Chapter 6 - Life Processes>Exercise>Q 47

During the respiration of an organism A, 1 molecule of glucose produces 2 ATP molecules whereas, in the respiration of another organism B, 1 molecule of glucose produces 38 ATP molecules.
Name one unicellular fungus which behaves like A.(Yeast/Spirogyra)

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10th CBSE

IMPORTANT

Science Textbook of Competency Based Questions for Class X>Chapter 6 - Life Processes>Exercise>Q 48

During the respiration of organism A, 1 molecule of glucose produces 2 ATP molecules whereas, in the respiration of another organism B, 1 molecule of glucose produces 38 ATP molecules.
Which type of organism, A or B, can convert glucose into alcohol? (Write the alphabet)

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10th CBSE

IMPORTANT

Science Textbook of Competency Based Questions for Class X>Chapter 6 - Life Processes>Exercise>Q 49

Take

3

test tubes. Fill

3 / 4

th of each with water. Label them X, Y, and Z. Keep a snail in test tube X, a water plant in test tube Y, and in Z, keep snail and plant both. Which test-tube would have the highest concentration of

C O_{2}

? Give reason in support of your answer.

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10th CBSE

IMPORTANT

Science Textbook of Competency Based Questions for Class X>Chapter 6 - Life Processes>Exercise>Q 52

Match the entries of Column 1 with those of Column 2.

Column 1	Column 2
a. Small intestine	i. Gall bladder
b. Large intestine	ii. Amylase
c. Pancreas	iii. Colon
d. Liver	iv. Duodenum

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10th CBSE

IMPORTANT

Science Textbook of Competency Based Questions for Class X>Chapter 6 - Life Processes>Exercise>Q 54

Differentiate between the following:

Autotrophs and Heterotrophs

The sports teacher of the class punished Rohan with 300 sit-ups. Next day, Rohan felt extreme muscle pain in his legs. This pain is due to the

Important Questions on Life Processes

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The sports teacher of the class punished Rohan with $300$ sit-ups. Next day, Rohan felt extreme muscle pain in his legs. This pain is due to the