Animation: Skull week 3

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Glycolysis

After viewing the animation, answer these questions.

1.Cells derive energy from the oxidation of nutrients, such as glucose .

2.The oxidation of glucose to pyruvate occurs through a series of steps called glycolysis .

3.How many carbons are in a molecule of glucose?
6 carbon glucose

4.The energy related during these oxidation reactions is used to form adenosine triphosphate ( ATP ), the Energy currency of the cell.

5.Name the two initials steps in glycolysis.
The two initial steps in glycolysis are two phosphates to glucose and two molecules of ATP.

6.What are the three molecules that results?
The three molecules are 6 carbon sugar diphosphate molecule, 2 low energy adenosine diphosphate molecules or ADP.

7.What then occurs to the 6-carbon molecule?
The 6-carbon molecule splits into two 3 carbon molecules

8.The 3-carbon molecules are converted to pyruvate .

9.What happens to the electrons in this reaction? What two molecules are formed? The electron is transferred to the coenzyme NAD+ to form NADH then ATP is formed.

10.What happens to the pyruvate under aerobic conditions?
The pyruvate is oxidized to yield more ATP and is converted into lactic acid.

11.What happens to the pyruvate under anaerobic conditions?
The pyruvate is oxidized to yield more ATP and is converted into lactic acid.

Diffusion

After viewing the animation, answer these questions.

1.Molecules dissolved in a solution are in constant random motion due to their kinetic energy .

2.One result of this motion is dissolved molecules become evenly distributed throughout the solution .

3.This tendency of molecules to spread out is an example of diffusion .

4.Even as a solid lump, the individual sugar molecules are solid lumps .

5.What happens to the lump of...
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