Tag: introduction to respiration

Questions Related to introduction to respiration

Read the following four statements carefully.
(i) Ventral respiratory group of neurons of medulla oblongata can cause both inspiration and expiration. 
(ii) The part of the respiratory system starting with the external nostrils up to the terminal bronchioles constitutes the respiratory or exchange part of the respiratory system. 
(iii)  During swallowing epiglottis can be covered by a thin elastic cartilaginous flap called glottis to prevent the entry of food into the larynx.
(iv)  Binding of oxygen with haemoglobin is primarily related to partial pressure of $O _{2}$. 
Which of the above two statements are correct? 

zoology respiratory system experiments on photosynthesis cellular respiration introduction to respiration

  1. (ii) and (iii)

  2. (iii) and (iv)

  3. (i)and(ii)

  4. (i) and (iv)

Show answer
Correct Option: D
Explanation:

The part of the respiratory system starting with the external nostrils up to the terminal bronchioles constitutes the conducting part whereas the alveoli and their ducts form the respiratory or exchange part. During swallowing, glottis can be covered by a thin elastic cartilaginous flap called epiglottis to prevent the entry of food into the larynx.

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 $CO _2$

Show answer
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

Show answer
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

Show answer
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

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  1. Glucose

  2. Carbon

  3. Nitrogen

  4. None of the above

Show answer
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

Show answer
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

Show answer
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

Show answer
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

Show answer
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.

Show answer
Correct Option: A