Respiration MCQs for NEET — Botany Questions with Answers

Cytochrome c is a mobile electron carrier

The rate of respiration during seed germination is rapid. This is because the growing seedling needs a large amount of energy to support various metabolic processes, which is provided through respiration.

Quinones are mobile electron carriers. They play a crucial role in the electron transport chain, a series of reactions that occur in the mitochondria during cellular respiration, helping in the transfer of electrons between different complexes.

Metabolism encompasses all chemical reactions that occur within a living organism to maintain life. It includes both anabolic processes, which build complex molecules from simpler ones, and catabolic processes, which break down complex molecules into simpler ones. Hence, metabolism involves both anabolic and catabolic processes.

Organisms obtain energy primarily through the process of respiration. During respiration, organic molecules such as glucose are broken down to release energy, which is then used by the organism to perform various functions necessary for life.

During respiration, food molecules such as glucose are oxidized to produce energy. The process involves the removal of electrons and hydrogen ions, which ultimately combine with oxygen to form water. This oxidation process releases energy stored in the chemical bonds of glucose. Hence, the correct option is that the food is oxidised.

Glucose is the main respiratory substrate in animals. It is the primary source of energy and is metabolized during cellular respiration to produce ATP, which is the energy currency of the cell. While other molecules like fats and proteins can also be used, glucose is the most readily available and commonly used substrate.

Respiration is a universal process found in all living organisms, including bacteria, prokaryotes, and animals. It is essential for the production of ATP, which is necessary for various cellular functions. Therefore, respiration is found in all these categories.

In aerobic respiration, the respiratory substrate (like glucose) is completely oxidised to carbon dioxide and water, releasing a significant amount of energy. This process occurs in the presence of oxygen.