Assume that all three carbon atoms in glycerol are labeled with 14C and the labeled glycerol wasinjected into the skeletal muscles of a rat (assume that the labeled glycerol cannot be transported to the liver through the blood stream). You found out that all 6 carbon atoms in glucose were labeled with 14C inthe liver. Please calculate the net consumption of the number of high-energy phosphates for theformation of one radioisotope-labeled glucose molecule

The Nutrition Facts label on most food products shows % daily values based on a food energy requirement of 8,360 kJ (2,000 kcal) at normal resting state. a) Assuming that the efficiency of converting food energy to ATP is 50%, calculate the mass of ATP (in kg) that is harvested daily by the human body from 8,360 kJ of food energy. A total of 30.5 kJ of energy is needed to synthesize one mole of ATP under standard conditions. The molar mass of ATP is 505 g/mol. b) For an average 68-kg (150 lbs.) human adult, calculate the % mass of extracted ATP (from your answer in 2a) relative to body weight.

If the glucose molecule was labeled with 14C at the C-3, which carbon atom in pyruvate would you expect to find labeled? Select the structure of pyruvate showing its appropriate structure at pH 7.4. The structure should have a carbon highlighted in green and bold that corresponds to the original 14C labeled C-3 of glucose. H3C-C-C-OH H3C-C-C -O H3C-C-c-OH H3C C-C- H3C-C-C- H3C-C HO-

Whether it's the glucose you learned about in cell biology for photosynthesis, or its crop sugars like sucrose and fructose, they all have the same chemical formula (shown below, C6H12O6) with minor structural differences. As you can see in the chemical equation below, the one-celled organism called "yeast" consumes 1 sugar molecule and produces two of the 2-carbon alcohol molecules (ethanol) and two molecules of carbon dioxide. Hopefully you learned this earlier of the phylum Ascomycota. [the in high school: yeast is a single-celled answer might surprise you! Try using what kind of an organism is yeast as your Google search term.] 20,H,OHaq) + 2CO, (be), yeast CH,O alaq) 2(aq) 12

At equilibrium, D-galactose exists almost exclusively in its α and β pyranose forms. Aqueous solutions are freshly prepared for the α and β forms, both at the same concentration and temperature. The solution of the α form rotatesplane-polarized light +150.7°, whereas the solution of the β form rotates the light +52.8°. Over time, both solutions have the same measured rotation of +80.2°. How much of the equilibrated solution does each form account for?

A research group discovers a new version of happyase, which they call happyase*, that catalyzes the chemical reaction: HAPPY-SAD The researchers begin to characterize the enzyme. The researchers determined the kcat of the enzyme to be 452 s-1. In a separate experiment with [E;) at 1.5 nM and [HAPPY) at 38 µM, the researchers find that Vo is equal to 320 nM s-1. What is the measured Km of happyase* for its substrate HAPPY? Make sure to include units in the answer.

None

5) A certain aerobic organism is able to metabolize the following glycolipid: "CH,OH OH HO OH A. Draw the 2 resulting structures that would occur upon initial hydrolysis of the O-glycosidic bond. B. Calculate how much ATP is formed upon complete aerobic oxidation of one mole of the compound. Assume that no ATP is produced when one mole of the glycosidic bond in the above compound is hydrolyzed. Show calculation below.

Which of the following statements are TRUE? Multiple answers:Multiple answers are accepted for this question PLEASE SHOW WORK FOR EACH PART AND EXPLAIN WHY EACH ANSWER CHOICE IS WRONG OR RIGHT a. The tripeptide His-Lys-Glu has a net charge of -2 at pH 8.0. b. The tripeptide Asp-Asp-Asp has a net charge of -3 at pH 7.0. c. The tetrapeptide His-His-His-His has a net charge of -1 at pH 7.0. d. There are 6 possible sequences for a tripeptide containing Arg - His - and Pro. e. Certain bacteria synthesize cyclic tetrapeptides. The net charge at pH 7.0 of a cyclic tetrapeptide consisting of two Pro and two Tyr is 0.

part 2