EVERYDAY SCIENCE

SCIENCE

RESPIRATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Respiration is a chemical reaction where ____ is oxidized(combined with oxygen).
A
carbon
B
sugar
C
water
D
hydrogen
Explanation: 

Detailed explanation-1: -Aerobic respiration is the form of respiration which uses oxygen. Glucose is oxidized to carbon dioxide, water and energy in aerobic respiration. The excess energy gets stored in the cell in the form of ATP.

Detailed explanation-2: -Aerobic respiration takes place in the mitochondria and requires oxygen and glucose, and produces carbon dioxide, water, and energy. The chemical equation is C6H12O6 + 6O2 → 6CO2 + 6H2O (glucose + oxygen-> carbon dioxide + water). Was this answer helpful?

Detailed explanation-3: -During aerobic respiration, complete oxidation of carbohydrates takes place. Glucose is broken down byoxygen to release energy, while carbon dioxide and water are the by-products of the reaction. The released energy is used to make a special energy molecule called Adenosine triphosphate (ATP).

Detailed explanation-4: -Respiration is a chemical change as new substances like carbon dioxide and water are formed. Also there is change in the mass as glucose is oxidised by oxygen and heat is released. This change is permanent. All these factors conclude that respiration is a chemical change.

Detailed explanation-5: -The process of using glucose to make energy is called cellular respiration. The reactants, or what we start with, in cellular respiration are glucose and oxygen. We get oxygen from breathing in air. Our bodies do cellular respiration to make energy, which is stored as ATP, and carbon dioxide.

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