1. In cells, the energy available in food is used to make an energy-rich compound called: ATP
2. The first step in releasing the energy of glucose in the cell knows as: Glycolysis
3. The process that releases energy from food in the presence of oxygen is: cellular respiration
4. Which organisms perform cellular respiration: C
5. The net gain of energy from glycolysis is: Two ATP molecule
6. Because fermentation takes place in the absence of oxygen, it is said to be: Anaerobic
7. The krebs cycle takes place within the: Mitochondrion
8 The electron transport chain uses the high-energy electrons from the krebs cycle to: convert ADP to ATP
9. The total 36 molecules of ATP are producesed from 1 molecule of glucose as a result of: Cellular Respiration
10. During heavy exercise, the build up of lactic acid in muscle cells result in: oxygen debt
11. A- A unit of energy.
B- the glucose is break down in the cell by
1)glycolysis
2)preparation of pyruvic acid
3) kreb's cycle or citric acid cycle or CAC or tricarboxylic acid cycle
4)oxidative phosphorylation
and after that ATP is produced which is the energy currency of our body

12. A- During Glycolysis, Glucosemolecules are split into two pyruvates during a sequence of enzyme-controlled reactions.
B- Sugars

13. ATP production and NADH production. ATP production

14. 6O2 + C6H12O6 = 6CO2 + 6H2O + Energy
Oxygen + Glucose = Carbon Dioxide + water + energy

16. Each NAD+ accepts a pair of high-energy electrons. One of the reactions of glycolysis removes 4 high-energy electrons and passes them to an carrier. Akk of the cell's available NAD+ molecules are filled up with electrons.

17. Alcoholic Fermentation and Lactic Fermentation. Alcoholic Fermenation.

18. Pyruvic acid + NADH = Lactic Acid + NAD+, Pyruvic Acid

19. Cellular Respiration and Fermentation both have glycolysis, energy, and ATP. cellular respiration produces energy and Fermentation releases energy.

20. The Kreb Cycle starts with pyruvic acid produced by glycolysis that enters mitochondrion. A carbon from pyruvic acid becomes part of the molecule of carbon dioxide which is released into the air. Two of the 3 carbon atoms are joined compounded called Coenzyme A to form acetyl-CoA. Then adds the 2-carbon acetyl group to a 4- carbon molecule, producing a 6-carbon molecule called cirtic acid. The cirtic acid is broken down into a 4-carbon molecule. More carbon dioxide is released into electrons and transfered into energy carriers. For each turn of the cycle, a molecule ATP is produced, 5 pairs of high-energy electrons are captured by 5 carriers molecules: 4 NADH molecules and 1 FADH2. High-energy electrons generated that are passed to NADH and FADH2.

21. Glycolsis produces just 2 ATP molecules per glucose.

22. Cellular respiration is the only way to generate a continuing supply of ATP. Cellular respiration releases energy more slowly than fermentation.This stores glycogen.