1) Monosaccharide Structures r str s, show the carbon atom numbers. A. Fisher projection of D-glucose...
1.
Which of the following is an aldohexose?
2. Which of the following is a cetopentose?
3. Which of the following best describes the relationship
between D-glucose and D-fructose?
4. Which of the following is (are) L-alfohexose(s)?
5. Which of the following aldohexose(s) is (are)
dextrorotatory?
6. How many stereoisomers are possible for L-galactose? Draw
or look for its structure.
7. Which of the following conpounds is a pair of
enantiomers?
8. Draw the fisher projection for L-sedoheptulose and also...
Part D Glucose can be classified as an aldohexose. Name the following monosaccharide to indicate its carbonyl group and the number of carbon atoms. но он он н -C- C-C-C-C OH HHHH Spell out the name of the monosaccharide, including the carbonyl group and the number of carbon atoms. View Available Hint(s) (3R 4R)-1,3,4,5-tetrahydroxyponta Submit Previous Answers X Incorrect; Try Again; 3 attempts remaining Part B Indicate the chiral carbon(s). Identify the appropriate atom by selecting each atom and assigning...
task D-glucose and D-galactose are both hexonaldoses. 1. On which carbon atom (s) is the chirality different? 2. Are they each other's epimers? During glycosylation of proteins, both sugars often occur as N-acetylated derivatives. 3. Which carbon atom is N-acetylated in galactose and glucose? 4. Where does N-acetyl-galactosamine occur most often, on O-glycosylations (serine, threonine) or N-glycosylations (asparagine)? 5. Where does N-acetyl-glucosamine occur most often, on O-glycosylations (serine, threonine) or N-glycosylations (asparagine)?
1. a. The large structure shown below has recently been studied by the pharmaceutical company Merck. Using the numbering system shown for this structure, write (R) or (S) over the numbered line for each stereogenic center. b. (-)-Menthol is shown as the most stable chair conformation. Write the (R) or (S) stereochemistry above the atom numbers. c. Isoleucine is one of the twenty common amino acids. All of the stereogenic centers are (S). Draw the hydrogens to show those stereocenters....
1. Give a sequence of reactions to accomplish the following transformation? Show mechanism 2. What reagent(s) would accomplish the following? Show mechanism. R-CH2-NH2 R-C-NH2 3. What would result from the reactions shown below? Hsco-s-OCH3 large excess) NaOH нон H,0 но ОН "ОН (a and B) 4. Predict the major product of the following reaction. CHNNH 3 equivalents) но CHCH2OH Heat он CH2OH Draw the Haworth projection for chair conformation of a-D-Glucopyranose (shown below) CH2OH HO H OH OH
1. Draw glyceraldehyde and use it to explain D versus L, and R versus S enantiomers. Explain chirality in brief terms. a) Draw a 3 , 4, 5, and 6 carbon monosaccharide b) Show how the cyclization of D-glucose is
18.
Which of the following compound(s) would undergo mutarotation in
aqueous solution?
19. Draw the chair conformation of a-D-galactopyranose.
20. Which of the following compound(s) is a glycoside?
21. Provide the reagents neccesary to carry out the following
conversion.
22. Predict the product(s) for the following reaction.
23. D-glucose & D-galactose are ______epimers of each
other.
24. Predict the product(s) for the following reaction.
25. Which of the following compound(s) would produce D-glucose
and D-mannose when treated with HCN followed...
Question: You buy a sample of glucose that has the radioactive carbon-14 (C) isotope at the second position (Carbon #2). All other carbon positions in the glucose molecules have the "C isotope. "C is only a label and does not alter the biochemical behavior of the molecules in which it is found. This glucose sample is mixed with all the enzymes derived from liver cells, which initially contain no other C-labeled chemicals. A) Draw the Haworth structure of glucose and...
The following is an example of an O-linked oligosaccharide chain in oligosaccharide is linked to the protein by the side-chain functional B the side-chain functional group of serine or threonine residues. Fuda2-12) Gal(β1-34)GlcNAc(B1-4) aride chain in glycoproteins. The O-linkage means the GlcNAc(a1 )-) Serine GalNAc(al>3) al(B1- 4)GIcNAc(B13) Gal(B1->4)GIcNAc(3)G1>3) Fuc(a22) Draw out this polymer from the following Fischer projections of the monosaccharide. 1) Show each monosaccharide in the Haworth projection and in the Chair conformation for the six-member rings. 2) Show...
ANSWER THE FOLLOWING AS TRUE OR FALSE a) _____ there are no saturated fats in vegetable products, only animal products b) _____ hydrogenation takes unsaturated fats and converts them to saturated fats c) _____ humans are capable of utilizing cellulose for food d) _____ amino acids are joined in a specific sequence to form proteins e) _____ cellulose is indigestible to all organisms f) _____ the dissacharide found in mammalian milk is maltose...