EVERYDAY SCIENCE

Detailed explanation-1: -The correct option is B False. Respiration: Respiration is a chemical reaction that occurs within the cell.

Detailed explanation-2: -Cellular respiration is a series of chemical reactions that break down glucose to produce ATP, which may be used as energy to power many reactions throughout the body. There are three main steps of cellular respiration: glycolysis, the citric acid cycle, and oxidative phosphorylation.

Detailed explanation-3: -Cellular respiration in plants and animals involve chemical reactions with oxygen that release stored energy. In these processes, complex molecules containing carbon react with oxygen to produce carbon dioxide and other materials.

Detailed explanation-4: -Cellular respiration involves the oxidation of food in many steps where the chemical energy is transformed into ATP molecules, with some energy being released as heat with each step that increases the entropy of the system. Thus, respiration takes place following the laws of thermodynamics.

Detailed explanation-5: -The first stage of cellular respiration is glycolysis. This process is shown in the top box in Figure 5.9. 3 showing a 6-carbon molecule being broken down into two 3-carbon pyruvate molecules. ATP is produced in this process which takes place in the cytosol of the cytoplasm.