What type of glycosidic bind occurring between and ALDOSE and KETOSE would yield a non-reducing disaccharide?...
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What type of glycosidic bind occurring between and ALDOSE and
KETOSE would yield a non-reducing disaccharide?...
#47 What type of glycosidic linkage connect this disaccharide? Снон о П 1 OH HO H...
#47 What type of glycosidic linkage connect this disaccharide? Снон о П 1 OH HO H OH нон, H HO CH OH Oa-1,4 ОВ-1,2 Oa-1,2 ОВ-1,4 Next >
5. (6 points) The glycosidic linkage of the following disaccharide is: HO HO ΓΗ HO HO...
5. (6 points) The glycosidic linkage of the following disaccharide is: HO HO ΓΗ HO HO a C-1.1 b. B-1,1 c. 0-1,4 d. B-1,4 e. -1.6 f. B-1,6 a. Which arrow(s) identifies the reducing end(s) of the molecule? a 1 b. II 8 land III h. Il and V C. III i III and IV d. IV j. I and IV e. V k. III and V f. I and IV b. Which arrow(s) defines the anomeric carbon(s) of the...
I.-(3 pts) What is the structural difference between an aldose and a ketose 2. (2 pts) Which two ...
I.-(3 pts) What is the structural difference between an aldose and a ketose 2. (2 pts) Which two functional groups are present in all monosaccharides? 3. (4 pts) Wha is the name of the molecule below? Which enantiomer is represented? C-H но-с-н CH2OH 4. (2 pts) Wha property of a pair of molecules results in the formation of enantiomers? 5. (3 pts) How are the symbols D- or L- assigned in naming a sugar? 6. (3 pts The following disaccharides...
what type of carbohydrate is the unknown 6. In lab a student performed experiments to determine...
what type of carbohydrate is the unknown
6. In lab a student performed experiments to determine the identity of an unknown carbohydrate. From the observations below, what type of carbohydrate is the unknown? a. The unknown is a polysaccharide. Test Observations b. The unknown is a disaccharide. Benedict's test Positive C. The unknown is an aldose (monosaccharide). Barfoed's test Negative Sellwanoff's test Positive d. The unknown is a ketose (monosaccharide). lodine test Negative
1. Sketch the NMR spectrum you would expect to find each of the following compounds. a)...
1. Sketch the NMR spectrum you would expect to find each of the following compounds. a) 1-bromobutane b) 2,2-dibromobutane c) 1-butanol d) 2,2,3,3-tetrabromobutane e) butane ) 1,1,4-tribromobutane g) 1,4-dibromobutane h) 1,1,1-tribromobutane i) vinyl bromide j) 1,1-dibromoethene k) cis-1,2-dibromoethene 1) trans- 1,2-dibromoethene n) 2-methyl-2-butene m) allyl bromide
Glycoproteins and glycolipids on the surface of cell plasma membranes determine interactions between cells. What type...
Glycoproteins and glycolipids on the surface of cell plasma membranes determine interactions between cells. What type of chemical bond is most probably used to connect the carbohydrate molecules to the protein or lipid molecules? a. peptide bond b. glycosidic bond c. ester bond d. hydrogen bond e. amide bond
can someone answer these 3 questions? 1. What type of reaction can the following molecule have?...
can someone answer these 3 questions?
1. What type of reaction can the following molecule have? A. Michael Addition B. 1,4 Addition C. 1,2 Addition D. Both A and B E. All of the above 2. What is the Claisen Condensation? A. Aldol Condensation of aldehydes B. Aldol Condensation of Ketones C. Aldol Condensation of Esters D. Both A and B E. None of the above 3. Which class of compounds will have the higher boiling points? A. Aldehydes B....
15. What is a major difference between Th and Tc cells? A. Tc can bind to...
15. What is a major difference between Th and Tc cells? A. Tc can bind to almost any infected cell; Th only bind infected antigen presenting cells B. Tc mostly secrete cytokines; Th secrete histamine C. Effector Ty cells induce apoptosis; effector Tc cells induce humoral immunity D. TH cells produce B7, but Tc cells produce interleukin-2 E. T cells undergo clonal deletion; Tc undergo clonal expansion 19. Humans with the mutation IL<tmlhor> fail to produce interleukin-2. Which of the...
Which of the following can form a covalent bond between the two sequences under non-reducing conditions?...
Which of the following can form a covalent bond between
the two sequences under non-reducing conditions?
Sequences C and D
Sequences A and H
Sequences B and E
Sequences A and C
Sequences F and G
Which of the following sequences can form an alpha-helix
with hydrophobic residues only along one face of the helix, and
hydrophilic residues only along the other face of the
helix?
Sequence F
Sequence G
Sequence H
Sequence E
Sequence B
Which of the following...
Name: CHEM 131 3. (8 pts) What type of interaction is expected between the side chains...
Name: CHEM 131 3. (8 pts) What type of interaction is expected between the side chains of the following pairs of amino acids (examples include salt bridges, H-bonding, disulfide bonds and dispersion forces)? Tyrosine and asparagine a) b) Leucine and proline c) two cysteines Give an example of two amino acids that could form a salt bridge (chemical structure or 3 letter d) code) 4. (10 pts) ldentify in which structural feature (1, 2" or 3" structure) of a protein...
#47 What type of glycosidic linkage connect this disaccharide? Снон о П 1 OH HO H OH нон, H HO CH OH Oa-1,4 ОВ-1,2 Oa-1,2 ОВ-1,4 Next >
5. (6 points) The glycosidic linkage of the following disaccharide is: HO HO ΓΗ HO HO a C-1.1 b. B-1,1 c. 0-1,4 d. B-1,4 e. -1.6 f. B-1,6 a. Which arrow(s) identifies the reducing end(s) of the molecule? a 1 b. II 8 land III h. Il and V C. III i III and IV d. IV j. I and IV e. V k. III and V f. I and IV b. Which arrow(s) defines the anomeric carbon(s) of the...
I.-(3 pts) What is the structural difference between an aldose and a ketose 2. (2 pts) Which two functional groups are present in all monosaccharides? 3. (4 pts) Wha is the name of the molecule below? Which enantiomer is represented? C-H но-с-н CH2OH 4. (2 pts) Wha property of a pair of molecules results in the formation of enantiomers? 5. (3 pts) How are the symbols D- or L- assigned in naming a sugar? 6. (3 pts The following disaccharides...
what type of carbohydrate is the unknown
6. In lab a student performed experiments to determine the identity of an unknown carbohydrate. From the observations below, what type of carbohydrate is the unknown? a. The unknown is a polysaccharide. Test Observations b. The unknown is a disaccharide. Benedict's test Positive C. The unknown is an aldose (monosaccharide). Barfoed's test Negative Sellwanoff's test Positive d. The unknown is a ketose (monosaccharide). lodine test Negative
1. Sketch the NMR spectrum you would expect to find each of the following compounds. a) 1-bromobutane b) 2,2-dibromobutane c) 1-butanol d) 2,2,3,3-tetrabromobutane e) butane ) 1,1,4-tribromobutane g) 1,4-dibromobutane h) 1,1,1-tribromobutane i) vinyl bromide j) 1,1-dibromoethene k) cis-1,2-dibromoethene 1) trans- 1,2-dibromoethene n) 2-methyl-2-butene m) allyl bromide
can someone answer these 3 questions?
1. What type of reaction can the following molecule have? A. Michael Addition B. 1,4 Addition C. 1,2 Addition D. Both A and B E. All of the above 2. What is the Claisen Condensation? A. Aldol Condensation of aldehydes B. Aldol Condensation of Ketones C. Aldol Condensation of Esters D. Both A and B E. None of the above 3. Which class of compounds will have the higher boiling points? A. Aldehydes B....
15. What is a major difference between Th and Tc cells? A. Tc can bind to almost any infected cell; Th only bind infected antigen presenting cells B. Tc mostly secrete cytokines; Th secrete histamine C. Effector Ty cells induce apoptosis; effector Tc cells induce humoral immunity D. TH cells produce B7, but Tc cells produce interleukin-2 E. T cells undergo clonal deletion; Tc undergo clonal expansion 19. Humans with the mutation IL<tmlhor> fail to produce interleukin-2. Which of the...
Which of the following can form a covalent bond between
the two sequences under non-reducing conditions?
Sequences C and D
Sequences A and H
Sequences B and E
Sequences A and C
Sequences F and G
Which of the following sequences can form an alpha-helix
with hydrophobic residues only along one face of the helix, and
hydrophilic residues only along the other face of the
helix?
Sequence F
Sequence G
Sequence H
Sequence E
Sequence B
Which of the following...
Name: CHEM 131 3. (8 pts) What type of interaction is expected between the side chains of the following pairs of amino acids (examples include salt bridges, H-bonding, disulfide bonds and dispersion forces)? Tyrosine and asparagine a) b) Leucine and proline c) two cysteines Give an example of two amino acids that could form a salt bridge (chemical structure or 3 letter d) code) 4. (10 pts) ldentify in which structural feature (1, 2" or 3" structure) of a protein...
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