Question

Which of the following is a source of respiration?
A)Vitamins
B)Fats
C)Glucose
D)Proteins

Answer 1

Hint: Respiration is the metabolic mechanism in which, by mixing oxygen and glucose, the cells of an organism obtain energy, leading to the production of carbon dioxide, water and ATP (the currency of energy in cells)

Complete answer:
Cellular respiration facilitates the utilization (release) of energy contained in the chemical bonds of glucose by animals. To generate ATP, the energy in glucose is used. Therefore, cellular respiration is a system in which the energy in the glucose is passed to the ATP.
Glucose is oxidized in respiration and hence releases energy. For water to form, oxygen is reduced. The sugar molecule's carbon atoms are emitted as carbon dioxide. Two main steps are needed for the full breakdown of glucose into carbon dioxide and water: 1) glycolysis and Aerobic respiration. Two ATPs generate glycolysis. If oxygen is present, 34 more ATPs are produced by aerobic pathways.

The enzymatic reactions of cellular respiration have origin in the cytoplasm, but most of them take place in the mitochondria. In the double-membrane organelle, called the mitochondrion, mitochondrial respiration happens.
Cellular respiration consumes food and uses it to generate ATP, a chemical that is used for energy by the cell. This method usually uses oxygen, which is referred to as aerobic respiration. It has four steps, known as glycolysis, Link reaction, the cycle of Krebs, and the transport chain of electrons.

Hence, the correct answer is option (C)

Note: Two forms of cellular respiration occur (see definition of cellular respiration): aerobic and anaerobic. One happens when oxygen (aerobic) is present, and one occurs when oxygen is not present (anaerobic). Both start with glycolysis - glucose splitting.