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15. Draw the general structure for an amino acid in its zwitterionic form. 16. List four...
Questions 1. a) Draw the structure of the amino acid L-serine in the zwitterionic form (See...
Questions 1. a) Draw the structure of the amino acid L-serine in the zwitterionic form (See page 1150- 1199 in your Klein Text). b) Draw the structure of L-alanine if it is placed in concentrated acid, c) Draw the structure of D-methionine when it is placed in concentrated NaOH.
Can anyone confirm if these are correct? List and draw the structure(s) the amino acid(s) in...
Can anyone confirm if these are correct?
List and draw the structure(s) the amino acid(s) in which would have a-1 net charge at pH? List the amino acid(s) in which would have a + 1 net charge at pH 7? Draw the structure- of the peptide Arg-Asp-His-Ser-Gly at pH 7. List the N-terminus and C-terminus. Make sure the amide bonds are 'trans'. Give the products of a trypsin digestion of the peptide: His-phe-lys-val-asp-asp-arg-val Draw the full structure of the predominant...
please help with these 5 questions Consider a polypeptide consisting of 19 amino acid residues. Its...
please help with these 5
questions
Consider a polypeptide consisting of 19 amino acid residues. Its structure is shown below. Lys-Tyr-Gly-Gly-Phe-Leu-Arg-Arg-Ile-Arg-Pro-Lys-Leu-Lys-Trp-Asp-Asn-Gln-Tyr . Draw the fragments that would result if the peptide was treated with trypsin. (No partial credit) . Draw the fragments that would result if the peptide was treated with chymotropsin. (No partial credit) MATCH a term from the list below to each definition. Place the letter of the term in the blank to the left of the definition...
(18 pts) Answer True or False for each of the following questions (a) An amino acid...
(18 pts) Answer True or False for each of the following questions (a) An amino acid is in the zwitterionic form only if the pll is well below 7 (b) Salting out takes advantage of the fact that the solubility of proteins varies with concentration. (c) Proteins usually consists of amino acids of both L-isomers (d) Essentially all a-helices found in proteins are left-handed globular protein is thermodynamically the most stable structure. ( Isoclectric focusing can be used to separate...
15. Which is used to reduce the disulfide bonds in proteins? D) iodoacetate B) performic acid C) DTT A) PITC 16. Wh...
15. Which is used to reduce the disulfide bonds in proteins? D) iodoacetate B) performic acid C) DTT A) PITC 16. What is the net charge on the tripeptide Gly-Asp-Lys at pH 1.5? The table below gives the pKa's of the ionizable groups on the free amino acids. Free amino acid pK, of a-Carboxyl pKs of side chain pKa of a-amino group 2.4 group 9.8 Glycine Aspartate Lysine 2.0 3.9 9.9 2.2 9.1 10.5 A) -2 B) C) D) +2...
1)Match the name of each amino acid with one of its characteristics. 2)has a hydroxy group...
1)Match the name of each amino acid with one of its characteristics. 2)has a hydroxy group its aromatic side chain 3)has a sulfur atom in its side chain that can form disulfide bonds its side chain is a nonpolar isopropyl group 4)it has the smallest acidic side chain 5)this amino acid has the smallest side chain of all, a hydrogen atom 6)its side chain is a methyl group its side chain of 3 carbons forms a 5-membered ring with the...
questions e-f and g.and k. a) Use the 3 letter symbols for a 6 amino acid...
questions e-f and g.and k.
a) Use the 3 letter symbols for a 6 amino acid peptide chain containing at least one polar and at least one acidic or basic amino acid. (All at physiological pH.) Asp - Gly-Glu-Tyr- Phe- Ala OM b) Draw the primary structure with its peptide bonds, side chains, etc. in the correct order. CH3 NH - E-N -CH. - CH - C- 2-I U=0 -ch- & N-chi- CH₃ CH ₂ Coo CH н My Coo...
STRUCTURE WILL VARY DEPENDING IF PKA IS LARGE OR SMALL, Draw a formula for Val-Ser-Gly (V-S-G) in its predominant ionic form at pH 7.3. You may assume for the purposes of this question that the pKa v...
STRUCTURE WILL VARY DEPENDING IF PKA IS LARGE OR SMALL,
Draw a formula for Val-Ser-Gly (V-S-G) in its predominant ionic form at pH 7.3. You may assume for the purposes of this question that the pKa values of the acidic groups of amino acid residues in the peptide are the same as in the amino acid itself. You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. Do not include lone pairs in your...
7. Your genes partly determine your physical characteristics, but the environment you live in also plays...
7. Your genes partly determine your physical characteristics, but the environment you live in also plays a role. a. True--Some genes can be altered by environmental features. b. False--Your genes completely determine your physical characteristics. c. Scientists aren't sure what determines an individual's characteristics d. False-The environment plays no role e. True-In fact the environment always alters genetic characteristics. 8. Choose the correct sequence starting with the smallest unit: a. DNA, gene, allele, chromosome, nucleotide b. Chromosome, gene, allele, nucleotide,...
ANSWER THE FOLLOWING AS TRUE OR FALSE a) _____ there are no saturated fats in...
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...
Questions 1. a) Draw the structure of the amino acid L-serine in the zwitterionic form (See page 1150- 1199 in your Klein Text). b) Draw the structure of L-alanine if it is placed in concentrated acid, c) Draw the structure of D-methionine when it is placed in concentrated NaOH.
Can anyone confirm if these are correct?
List and draw the structure(s) the amino acid(s) in which would have a-1 net charge at pH? List the amino acid(s) in which would have a + 1 net charge at pH 7? Draw the structure- of the peptide Arg-Asp-His-Ser-Gly at pH 7. List the N-terminus and C-terminus. Make sure the amide bonds are 'trans'. Give the products of a trypsin digestion of the peptide: His-phe-lys-val-asp-asp-arg-val Draw the full structure of the predominant...
please help with these 5
questions
Consider a polypeptide consisting of 19 amino acid residues. Its structure is shown below. Lys-Tyr-Gly-Gly-Phe-Leu-Arg-Arg-Ile-Arg-Pro-Lys-Leu-Lys-Trp-Asp-Asn-Gln-Tyr . Draw the fragments that would result if the peptide was treated with trypsin. (No partial credit) . Draw the fragments that would result if the peptide was treated with chymotropsin. (No partial credit) MATCH a term from the list below to each definition. Place the letter of the term in the blank to the left of the definition...
(18 pts) Answer True or False for each of the following questions (a) An amino acid is in the zwitterionic form only if the pll is well below 7 (b) Salting out takes advantage of the fact that the solubility of proteins varies with concentration. (c) Proteins usually consists of amino acids of both L-isomers (d) Essentially all a-helices found in proteins are left-handed globular protein is thermodynamically the most stable structure. ( Isoclectric focusing can be used to separate...
15. Which is used to reduce the disulfide bonds in proteins? D) iodoacetate B) performic acid C) DTT A) PITC 16. What is the net charge on the tripeptide Gly-Asp-Lys at pH 1.5? The table below gives the pKa's of the ionizable groups on the free amino acids. Free amino acid pK, of a-Carboxyl pKs of side chain pKa of a-amino group 2.4 group 9.8 Glycine Aspartate Lysine 2.0 3.9 9.9 2.2 9.1 10.5 A) -2 B) C) D) +2...
questions e-f and g.and k.
a) Use the 3 letter symbols for a 6 amino acid peptide chain containing at least one polar and at least one acidic or basic amino acid. (All at physiological pH.) Asp - Gly-Glu-Tyr- Phe- Ala OM b) Draw the primary structure with its peptide bonds, side chains, etc. in the correct order. CH3 NH - E-N -CH. - CH - C- 2-I U=0 -ch- & N-chi- CH₃ CH ₂ Coo CH н My Coo...
STRUCTURE WILL VARY DEPENDING IF PKA IS LARGE OR SMALL,
Draw a formula for Val-Ser-Gly (V-S-G) in its predominant ionic form at pH 7.3. You may assume for the purposes of this question that the pKa values of the acidic groups of amino acid residues in the peptide are the same as in the amino acid itself. You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. Do not include lone pairs in your...
7. Your genes partly determine your physical characteristics, but the environment you live in also plays a role. a. True--Some genes can be altered by environmental features. b. False--Your genes completely determine your physical characteristics. c. Scientists aren't sure what determines an individual's characteristics d. False-The environment plays no role e. True-In fact the environment always alters genetic characteristics. 8. Choose the correct sequence starting with the smallest unit: a. DNA, gene, allele, chromosome, nucleotide b. Chromosome, gene, allele, nucleotide,...
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