Tag: cellular respiration

Questions Related to cellular respiration

Which of the following options contains the end products formed during anaerobic respiration in yeast?

zoology respiratory system experiments on photosynthesis cellular respiration introduction to respiration

  1. $H _2O, CO _2$ and energy

  2. $H _2S, C _6H _{12}O _6$ and energy

  3. $CO _2, C _2H _5OH$ and energy

  4. $H _2O$ and $CO _2$

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Correct Option: C
Explanation:

Anaerobic respiration in yeast results in the production of ethyl alcohol, carbon dioxide and energy. $C _6H _{12}O _6 \xrightarrow[Complex]{Zymase} \underset{Ethyl \, alcohol}{2C _2H _5OH} + 2CO _2 + $

Inspiration and expiration contain

zoology respiratory system experiments on photosynthesis cellular respiration introduction to respiration

  1. Oxygen

  2. Oxygen and carbon dioxide

  3. Carbon dioxide

  4. None of these

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Correct Option: B
Explanation:

  • Inhaled air contains more oxygen used to create energy and less carbon dioxide.
  •  Exhaled air contains more carbon dioxide produced as a waste product of energy production and less oxygen as it has been used in respiration. Gas exchange takes place by diffusion in the alveoli within the lungs.
  •  As a result, the composition of inhaled and exhaled air is different.

Therefore, the correct answer is option B.

Useful energy is provided to living beings by the process of 

zoology respiratory system experiments on photosynthesis cellular respiration introduction to respiration

  1. Digestion

  2. Respiration

  3. Regulation

  4. Reproduction

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Correct Option: B
Explanation:

Respiration is the process in which nutrients are converted into useful energy in a cell. It is responsible in transporting oxygen and carbon dioxide between cells and the external environment.

Respiration oxidizes

zoology respiratory system experiments on photosynthesis cellular respiration introduction to respiration

  1. Glucose

  2. Carbon

  3. Nitrogen

  4. None of the above

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Correct Option: A
Explanation:

Respiration is a catabolic process that takes place in living organisms. In this glucose is broken down in presence of oxygen to generate ATP along with the production of water and evolution of carbon dioxide. It is an exergonic process. Thus the correct answer is option A.

Calorie is the unit of

zoology respiratory system experiments on photosynthesis cellular respiration introduction to respiration

  1. Sound

  2. Temperature

  3. Light

  4. Heat

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Correct Option: D
Explanation:

The calorie was first defined to measure energy in the form of heat. These units are often used for the total amount of food energy. Nutritional requirements or intakes are expressed in calories per day. 

In respiration the energy is produced during the process of

zoology respiratory system experiments on photosynthesis cellular respiration introduction to respiration

  1. Glycolysis

  2. Krebs cycle

  3. Glycolysis and Krebs cycle

  4. Ornithine cycle

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Correct Option: C
Explanation:

Glycolysis is the first step of respiration which converts the glucose molecules into two molecules of pyruvate along with the production of 8 ATP. The two pyruvate molecules produced by the glycolysis enters the Krebs cycle. Each molecule of pyruvate produces 15 ATP. So total 30 ATP is formed during the Krebs cycle. Total 38 ATP is formed during the aerobic respiration.

So, the correct answer is option C.

The common immediate source of energy in cellular activity is

zoology respiratory system experiments on photosynthesis cellular respiration introduction to respiration

  1. ADP

  2. ATP

  3. FAD

  4. NAD

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Correct Option: B
Explanation:

ATP is an Adenosine triphosphate (ribose sugar, adenine base, and three phosphate groups), where a high energy bond attaches the third phosphate group to the molecule. The highly unstable bonds break to release the inorganic phosphate to fulfill the energy required for the metabolism.

Hence, the correct answer is option B.

The term respiration was given by

respiration-the energy producing system experiments on photosynthesis cellular respiration introduction to respiration

  1. Lavosier

  2. Dutrochet

  3. Sachs

  4. Krebs

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Correct Option: B
Explanation:

Henri Dutrochet, a French physiologist who is known for his valuable works in animal and plant physiology coined the term 'respiration'. He also discovered and named the process of osmosis (passage of solvent through a semipermeable membrane) that occurs at cellular level in both plants and animals. 

So the correct answer is 'Dutrochet'.

Which of the following is not a reason that breathing air is easier than breathing water'?

respiration-the energy producing system experiments on photosynthesis cellular respiration introduction to respiration

  1. A given volume of air is easier to move across the respiratory organs than the same volume of water.

  2. Air holds more oxygen per unit volume than water.

  3. Water breathers have a difficult time ridding themselves of CO, because $CO _2$ does not dissolve well in water.

  4. Temperature increases affect the $O _2$ content of water more than they do that of air.

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Correct Option: A

Name the scientist who demonstrated that breath is caused by the formation of carbon dioxide in blood. 

respiration-the energy producing system experiments on photosynthesis cellular respiration introduction to respiration

  1. Thomas Adams

  2. J Haldane

  3. J Priestley

  4. None of the above

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Correct Option: B
Explanation:

In 1906, Haldane and Priestley discovered that respiratory reflex i.e. breath is caused by an excess of carbon dioxide in the blood and not by a lack of oxygen. They described the regulation of respiratory drive by carbon dioxide and its effects on blood hydrogen ion concentration The high ability of deoxygenated haemoglobin to bind with carbon dioxide was named as Haldane effect. Thus the correct answer is option B.