EVERYDAY SCIENCE

Detailed explanation-1: -The glucose and oxygen used during respiration are delivered to each and every cell by the circulatory system.

Detailed explanation-2: -Glucose is the molecule normally used for respiration-it is the main respiratory substrate . Glucose is oxidised to release its energy, which is then stored in ATP molecules. Respiration is a series of chemical reactions, but this equation summarises the overall process.

Detailed explanation-3: -The pharynx is part of the digestive system as well as the respiratory system because it carries both food and air. At the bottom of the pharynx, this pathway divides in two, one for food-the esophagus (pronounced: ih-SAH-fuh-gus), which leads to the stomach-and the other for air.

Detailed explanation-4: -To start the process of cellular respiration, we need to get glucose into our cells. The first step is to eat a carbohydrate-rich food, made of glucose. Let’s say we eat a cookie. That cookie travels through our digestive system, where it is broken down and absorbed into the blood.

Detailed explanation-5: -Cellular respiration is a metabolic pathway that uses glucose to produce adenosine triphosphate (ATP), an organic compound the body can use for energy. One molecule of glucose can produce a net of 30-32 ATP.