What is the identify of compound A and B?
D-allose
L-allose
D-altrose
L-altrose
D-arabinose
L-arabinose
D-erythrose
L-erythrose
D-erythrulose
L-erythrulose
D-fructose
L-fructose
D-galactose
L-galactose
D-glucose
L-glucose
D-glyceraldehyde
L-glyceraldehyde
D-gulose
L-gulose
D-idose
L-idose
D‐lyxose
L‐lyxose
D-mannose
L-mannose
D‐psicose
L‐psicose
D-ribose
L-ribose
D-ribulose
L-ribulose
D-sorbose
L-sorbose
D-tagatose
L-tagatose
D-talose
L-talose
D-threose
L-threose
D‐xylose
L‐xylose
D-xylulose
L-xylulose
None of the above
What is the identify of compound A? CH2OH HO OH OH OH Compound A
он ОН Н о, он не о, он н . Он он Он н Ribose Deoxyribose For the monosaccharides above, draw hydrogen bonding using arrows to indicate H+ accepting or donating- w g 91 Draw the following structures: Ribose 5-P 929 Ribose 2-P Ribose 3-P Ribose 2,3-P (hint there is only one phosphate)
Draw the complete pathway Conversion of Ribulose-1,5-Bisphosphate to glucose, also highlight the CO2 molecule that enters the pathway in every step
Use the Haworth projection to draw D-ribose in the beta-furanose and alpha-pyranose forms.
Draw how the chemical structure changes during the fixation phase of the Calvin Cycle (Ribulose-1,5-bisphosphate + CO2 --> 6-Carbon Intermediate --> 3-Phosphoglycerate). Include enzymes used and any byproducts formed. What enzyme mediates this change in Q3? What does it do? Are there any byproducts other than 3-Phosphoglycerate? Why or why not?
4) Take a look at these structures of monosaccharides (3 pts) *CHOH CHOH CH,OH OH CH,OH SH HOM HO OH OH H H OH OH H . H OH GLUCOSE HOH GALACTOSE OH FRUCTOSE What is the molecular formula for the the following monosaccharides? a. glucose: C b. fructose: C c. galactose: C 5) A. Show the anomeric carbon. (1 pts) B. Draw B-D-Fructopyranose (2 pts) Fructose Isomers 6) Identify monosaccharide (M), disaccharide (D) or Polysaccharide (P) (3 pts) a....
003 2) draw the enantiomer and a diastereomer of ribose shown below (6 point) OH HO HO OH Hou 3) Draw all the hydrogen bonds that one ethanol molecule can form with water molecules (6 ponit)
D-(-)-ribose reacts with one equivalent of phenylhydrazine to make a phenylhydrazone, and continues to react with excess phenylhydrazine until a colorful osazone is formed. Modify both structures by adding and removing bonds to give the expected product in each case. -NH-NH2 1 equiv ?? ?? -NH-NH2 ?? o-(-)-ribose excess
24.64 Identify the two aldohexoses that will undergo a Wohl degra- dation to yield D-ribose. Draw a Fischer projection of the open-chain form for each of these two aldohexoses. 24.65 Identify the two aldohexoses that are obtained when D-arabi- nose undergoes a Kiliani-Fischer synthesis.
Draw the structure of the product(s) obtained when D-ribose reacts with Br_2/H_2O/CaCO_3 You do not have to consider stereochemistry. Do not draw organic or inorganic by-products. If a compound is fanned in multiple copies, only draw it once. Draw one structure per sketcher. Add additional sketchers using the dropdown menu in the bottom right comer. Separate multiple products using the - sign from the dropdown menu.