Question

IIA. After Glycolysis in the absence of Oxygen

1. Use one of your premade pyruvates and NADH molecules to begin this process.
2. Using an arrow, show the products of anaerobic respiration, which are _________ or _____________ depending on the organism completing the process.
3. Insert the image of your anaerobic sheet below.

1. In the absence of Oxygen (O₂), name the process that pyruvate goes through. ______________________ cellular respiration.
2. Where will this reaction occur in the ____________ of the cell?
3. What is the fate of lactate? Where does it go within the body?

IIB. In the presence of Oxygen—Formation of Acetyl-Co A

1. In the presence of Oxygen (O₂), pyruvate would instead go through ___________cellular respiration.
2. On your formation of acetyl- Co A sheet, place your pyruvate plus co-enzyme A on the left side of the arrow.
3. On the right you will put the products of this step, making the formula for this step.

Answer these questions to help you determine those products.

10. This reaction occurs in ________________ of the cell?
11. Pyruvate bonds with __________________ to form acetyl co-enzyme A.
12. The excess carbon is bonded to Oxygen (O₂) to form two _______________ molecules (metabolic waste products)
13. The excess energy is stored in two (reversible energy carriers) ___________________ molecules.
14. Acetyl Co-enzyme A can now enter into the _________________ cycle.
15. Insert the Formation of Acetyl-Co A formula from your sheet here.

16. What happens to each product of formation of Acetyl-co A?
    1. CO₂-
    2. NADH-
    3. Acetyl Co-A-
17. Where do the 2 molecules of NADH that are produced in this step go? ____________ (move them to that page now)

III. Krebs Cycle (Citric Acid Cycle)

The acetyl Co A is moved into the next set of reactions, the Krebs cycle.

1. On your Krebs’s cycle sheet create the formula using the available shapes. Remember, reactants on the left of the arrow and the products on the right. You can draw in your “+” signs and arrows.
2. Insert the image of your Krebs Cycle formula below.

3. Complete the products and their fate table below.

Krebs Cycle Products (up to 4 pts)	Fate of Each Product (up to 4 pts)
Insert products here	Insert the fate of each product here

Answer 1

IIA b the products are Lactate or Ethanol depending on the organisms.

in the absence of oxygen the process pyruvate goes through is fermentation either latctate fermentation or ethanol fermentation and it occurs in the cytoplasm of the cell.

In presence of Oxygen the pyruvate would go through aerobic cellular respiration or TCA cycle.

Pyruvate bonds with oxaloacetate to form the acetyl coA.

The reaction occurs in the mitochondria of the cell.

The excess carbon is bonded to O₂ to form the CO₂ the metabolic waste product.

Acetyl CoA can now enter into the TCA cycle.

The 2 molecules of NADH produced in this step goes to the electron transport chain to ultimately help in the formation of ATP.