THINK Answer this question individually 1. Why does the fermentation of sugars, such as glucose and fructose, depend upon the presence of P PAIR Answert Answer the following questions with a partner: 2. Which glycolytic reactions require ? 3. Several glycolytic intermediates contain phosphate. Where did these groups come from during the reactions? SHAREAs a class As a class, discuss the following questions: 4. How much P, is required to generate one CD, 5. Is CO, generation the most reliable way to measure ethanol fermentation? Why or why not?

in am since cOz is already 7) a) What are the molecular products of glycolysis, and what is the net amount of them that you would obtain from glycolysis per glucose? RULED PAGES LIC

1. Explain the biochemical role of the phosphate that is removed in reaction B. 2. What would be a typical functional group for a similar reaction in an organic lab? 3. Name the primary enzyme class for the reactions B, C, D1, and F. 4.Indicate the name of the primary enzyme and subclass for reaction E? 5. Explain the reversible reactivity of NADH and NAD+ based on the core structure and provide one chemical equivalent for each of them.

41.2 answer number 2 and explaim

Please answer correctly

Consider the following redox reaction: lactate + NAD = pyruvate + NADH + H+ The relevant reductive half reactions are as follows: pyruvate + 2e + 2H+ lactate NAD+ + 2e+ H* = NADH E' -0.185 V = E' -0.320 V What is the AE' of the redox reaction? -0.505 V -0.135 V 0.135 V ○ 0.505 V

2.1 ANSWER THE TABLE

In the skeletal muscle, in anaerobic conditions, glyceraldehyde 3-phosphate is converted into pyruvate during the payoff phase of glycolysis; and this pyruvate is reduced into lactate during lactic fermentation. Part 1-Write the 11 balanced biochemical equations corresponding to all the reaction steps leading to the conversion of glyceraldehyde-3-phosphate into lactate through glycolysis followed by lactic fermentation. Part 2-Write the net equation of the whole transformation process (i.e. with glyceraldehyde-3-phosphate as the starting substrate; and lactate as the end product).

Propose structures for intermediates A and B in the scheme below. This three-step conversion is carried out by enzymes that require no redox cofactors (no FAD, NADH etc.) nor TPP. Which enzyme in the citric acid cycle has an activity most similar to enzyme 1? Which enzyme in the PPP or the citric acid cycle has an intermediate that bears similarity to intermediate B? H OH COO™ Enzl A Enz2 B Enz3 OH

Write a coupled reaction for the phosphorylation of fructose 6-PO4 to fructose 1,6- bisPO4 with the hydrolysis of ATP. What is the interpretation of the answer?