5.2 Catabolic Pathways for ATP Production (Part 2)

Compare the EMP and ED pathways for glycolysis with regard to production of ATP, NADH, NADPH, and pyruvate

What is the purpose of the pentose phosphate pathway?

What is the starting reactant in pentose phosphate pathway?

What are the products in pentose phosphate pathway?

Is fermentation an aerobic or anaerobic process?

Anaerobic, doesn’t need oxygen

How is ATP synthesized during anaerobic respiration (SLP, oxidative phosphorylation, or photophosphorylation)?

How is ATP synthesized during fermentation (SLP, oxidative phosphorylation, or photophosphorylation)?

How is anaerobic respiration similar to aerobic cellular respiration?

How is anaerobic respiration different from aerobic cellular respiration (continue reactants and products)?

What input for glycolysis runs low if the electron transport chain is not working?

NAD+

What two processes are involved in fermentation? Describe both.

Glycolysis & fermentation

Glycolysis

Glucose molecules partially broken down into 2 pyruvate molecules with small yield of ATP

Fermentation

Pyruvate is fermented in a process that regenerates NAD+

Why is fermentation important?

***Describe the process of lactic acid fermentation

1. Glycolysis: Glucose breaks into 2 pyruvate, producing 2 net ATP and 2 NADH.

2. Fermentation: NADH donates electrons to pyruvate, converting it into lactic acid (lactate) and regenerating NAD⁺.

*No oxygen or ETC required

What are the products of lactic acid fermentation (per glucose)?

• 2 lactate

• 2 net ATP

• 2 NAD⁺ (recycled back to glycolysis)

Describe the process of alcohol fermentation. Describe the products.

Lab Connection: Phenol red test

What does it test for?

What are positive and negative results and what do they tell you?

Compare and contrast aerobic respiration, anaerobic respiration, and fermentation

Define photoautotroph, chemoautotroph, photoheterotroph, chemoheterotroph

Define obligate aerobe, microaerophile, aerotolerant anaerobe, facultative anaerobe, obligate anaerobe

What type of enzyme hydrolyzes a triglyceride to produce glycerol and fatty acids?

Describe the process of beta-oxidation

Lab Connection : Gelatin hydrolysis

What does it test for?

What are positive and negative results and what do they tell you?

Lab connection: Indole production

What does it test for?

What are positive and negative results and what do they tell you?

Lab Connection: Phenylalanine Deaminase

What does it test for?

What are positive and negative results and what do they tell you?

Lab Connection: Urea test

What does it test for?

What are positive and negative results and what do they tell you?