Question

In: Chemistry

Imagine a microorganism that uses dihydroxyacetone phosphate as a carbohydrate source and created lactate from it....

Imagine a microorganism that uses dihydroxyacetone phosphate as a carbohydrate source and created lactate from it. What would be the ATP yield from this processing of dihyroxyacetone phosphate to lactate?

A) 1 ATP

B) 2 ATP

C) 3 ATP

D) 4 ATP

Please explain why

Solutions

Expert Solution

B)

Glycolysis begins with the phosphorylation of glucose by hexokinase to form glucose-6-phosphate. This step uses one ATP, which is the donor of the phosphate group. Under the action of phosphofructokinase, glucose-6-phosphate is converted into fructose-6-phosphate. At this point, a second ATP donates its phosphate group, forming fructose-1,6-bisphosphate. This six-carbon sugar is split to form two phosphorylated three-carbon molecules, glyceraldehyde-3-phosphate and dihydroxyacetone phosphate, which are both converted into glyceraldehyde-3-phosphate. The glyceraldehyde-3-phosphate is further phosphorylated with groups donated by dihydrogen phosphate present in the cell to form the three-carbon molecule 1,3-bisphosphoglycerate. The energy of this reaction comes from the oxidation of (removal of electrons from) glyceraldehyde-3-phosphate. In a series of reactions leading to pyruvate, the two phosphate groups are then transferred to two ADPs to form two ATPs. Thus, glycolysis uses two ATPs but generates four ATPs, yielding a net gain of two ATPs and two molecules of pyruvate. In the presence of oxygen, pyruvate continues on to the Krebs cycle (also called the citric acid cycle or tricarboxylic acid cycle (TCA), where additional energy is extracted and passed on.


Related Solutions

Glycogenesis is building up glycogen from glucose molecules, while gluconeogenesis is making glucose from non-carbohydrate source....
Glycogenesis is building up glycogen from glucose molecules, while gluconeogenesis is making glucose from non-carbohydrate source. True False 1 points    QUESTION 2 The oxidation of fatty acids occurs in the ______________ cell membrane mitochondria nucleus cytosol 1 points    QUESTION 3 Acetyl-CoA is a key compound in the metabolic pathways, which can be produced in all of the following, except from pyrovate from fatty acids during beta oxidation from alcohol oxidation from oxidation of non-glucogenic amino acids all of...
Draw both the ethanol fermentation products and lactate production, indicating the location of C-14 if glucose-6-phosphate...
Draw both the ethanol fermentation products and lactate production, indicating the location of C-14 if glucose-6-phosphate labelled with C-14 at Carbon 1 were used.
Imagine someone has created new shoe technology and would like to be able to say that...
Imagine someone has created new shoe technology and would like to be able to say that their shoes have led to faster event times. Imagine the data represents Men’s 400 meter freestyle times with the new shoes. Compare against the industry rival’s reported mean time of 4.13 minutes. Complete a one-tailed hypothesis test at the 5% significance level for a single mean to determine if the new suits are statistically faster (hint: is a faster time a smaller or larger...
Interaction of solar salts Uses of solar salts How its created
Interaction of solar salts Uses of solar salts How its created
Imagine your family member is a patient at a hospital that uses the functional model of...
Imagine your family member is a patient at a hospital that uses the functional model of patient care delivery. She just had her knee replaced, and when you ask the nursing assistant for something for pain, she says, “I’ll tell the medication nurse.” The medication nurse comes to the room and says that your mother’s medication is to be administered intravenously, and the IV nurse will need to administer it. The IV nurse is busy starting an IV on another...
Explore the progression of the Staphylococcus aureus microorganism from skin infection to possibly fatal septicemia. Discuss...
Explore the progression of the Staphylococcus aureus microorganism from skin infection to possibly fatal septicemia. Discuss the factors that influence this pathogen to cause disease. Present current studies on new vaccines that were initiated because of antibiotic-resistant pathogens. Examine why and how quickly microorganisms can become antibiotic resistant.
A heat pump uses groundwater at 12°C as an energy source. If the energy delivered by...
A heat pump uses groundwater at 12°C as an energy source. If the energy delivered by the heat pump is to be 60 MJ/h, estimate the minimum mass flow rate of groundwater if the compressor operates with R-134a between pressures of 100 kPa and 1.0 MPa. Calculate the minimum compressor power.
Consider a residential heat pump that uses lake water as the heat source in the winter...
Consider a residential heat pump that uses lake water as the heat source in the winter and as heat sink inthe summer. The house is to maintained at a winter temperature of T= 18 degrees C and a summer temperature of T= 25 degrees C. To do this efficiently, it is found that the indoor coil should be at T= 50 degrees C in the winter and T= 5 degrees C in the summer. The outdoor coil temperature can be...
Richard Palm is the accounting clerk of Olive Limited. He uses the source documents such as...
Richard Palm is the accounting clerk of Olive Limited. He uses the source documents such as purchase orders, sales invoices and suppliers’ invoices to prepare journal vouchers for general ledger entries. Each day he posts the journal vouchers to the general ledger and the related subsidiary ledgers. At the end of each month, he reconciles the subsidiary accounts to their control accounts in the general ledger to ensure they balance. Discuss the internal control weaknesses and risks associated with the...
Imagine a firm that only uses capital (K) and labor (L). Use an isocost / isoquant...
Imagine a firm that only uses capital (K) and labor (L). Use an isocost / isoquant diagram to illustrate the firm’s equilibrium input mix for given prices of capital and labor and a given rate of output. Now illustrate what happens if the price of labor falls, and the firm wants to produce the same rate of output. What happens to the cost of production? Compare the relative marginal products of labor and capital (the MRTS) at the two equilibria.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT