Question

Describe in your own words what cell respiration is and why it is needed.

Answer 1

Cellular respiration is the process of breaking sugar into a form thatthe cell can use as energy. This happens in all forms of life.Cellular respiration takes in food and uses it to create ATP, a chemical which the cell uses for energy. Usually, this process uses oxygen, and is called aerobicrespiration.

Answer 2

Explanation:

• The process by which cells in plants and animals break down sugar and transform it into energy, which is subsequently used to carry out work at the cellular level, is known as cellular respiration.
• Cellular respiration serves the straightforward objective of giving cells the energy they require to function.
• Cellular respiration requires an initial input of glucose, ATP, and NAD+.
• The reactants differ at each stage. A universal electron acceptor called NAD+, a nicotinamide generated from vitamin B3, is essential for cellular respiration.
• The reactants differ at each stage. A universal electron acceptor called NAD+, a nicotinamide generated from vitamin B3, is essential for cellular respiration.ATP and H2O are the last byproducts of cellular respiration.
• Two pyruvate molecules, four ATPs (a net of two ATP), two NADH, and two H2O are produced during glycolysis.
• Therefore, glycolysis is the only process that may take place in the absence of oxygen, and only two ATP molecules may be created for each glucose molecule.

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