Test: Respiration - 2 - Class 10 MCQ

When glucose is completely oxidized in aerobic respiration, the end products are carbon dioxide and water. This process involves the breakdown of glucose through multiple steps, including glycolysis and the Krebs cycle, ultimately leading to the production of carbon dioxide and water as waste products. This efficient process generates a significant amount of ATP for cellular energy.

Lime water is utilized in the fermentation experiment setup to capture the carbon dioxide released during the fermentation process. The milky appearance of the lime water after some time indicates the liberation of CO2 from the sugar solution and yeast mixture. This observation helps demonstrate the production of carbon dioxide as a byproduct of fermentation.

The milky appearance of lime water in the fermentation experiment serves as an indicator of the release of carbon dioxide. This change occurs as a result of the carbon dioxide liberated from the sugar solution and yeast mixture during the fermentation process. The observation of lime water turning milky provides visual evidence of the production of CO2, showcasing one of the outcomes of the fermentation of sugar.

The primary purpose of respiration in living organisms is to break down food sources, such as glucose, to release energy for cellular needs. This process involves the intake of oxygen to facilitate the breakdown of food molecules and the production of ATP, the cellular energy currency. Without respiration, cells would not be able to generate the necessary energy for essential functions.

The primary function of respiratory organs in animals, as outlined is the exchange of respiratory gases. These organs have specialized structures that facilitate the diffusion of gases, such as oxygen and carbon dioxide, to meet the metabolic demands of the organism. This process is essential for cellular respiration and energy production within the body.

Respiration is a biochemical process that takes place in living cells to release energy. Combustion is a chemical process that occurs outside living cells or living systems. Respiration is a controlled biological process. Combustion is an uncontrolled process.

Fermentation is a type of anaerobic respiration carried out primarily by fungi and bacteria. It involves the breakdown of carbohydrates and other organic compounds outside the cell in a liquid medium, leading to the formation of alcohol, organic acids, gases, etc.

Yeast is added to the fruit juice or sugar solution in the fermentation process to release carbon dioxide. This is evident in the experiment described, where the observation of lime water turning milky indicates the liberation of CO2 from the mixture of sugar solution and yeast. The production of ethyl alcohol and CO2 is a result of the fermentation of sugar, showcasing the role of yeast in this process.

The main difference between aerobic and anaerobic respiration is that aerobic respiration produces a significantly larger amount of ATP compared to anaerobic respiration. Aerobic respiration, which occurs in the presence of oxygen, is a more efficient process for generating ATP from glucose molecules. In contrast, anaerobic respiration produces less ATP and does not require oxygen as a final electron acceptor, leading to the production of substances like lactic acid or ethanol as byproducts.

Mitochondria are the organelles involved in the process of aerobic respiration. These membrane-bound organelles are often referred to as the powerhouse of the cell because they are responsible for producing ATP, the energy currency of the cell, through the process of aerobic respiration. Within the mitochondria, various stages of aerobic respiration, including the Krebs cycle and the electron transport system, take place to generate ATP efficiently.