Homework Answers
The bond linking together amino acid to form peptides is called a peptide bond. This involves a covalent bonding linking the carbon atom of carboxylate group of one amino acid and Nitrogen atom of the amine group.
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9. The bond linking together amino acids to form peptides is called a atom of atom...
. The covalent (ester / amide /hydrocarbon /hydrogen) bond between peptides is responsible for the (primary...
. The covalent (ester / amide /hydrocarbon /hydrogen) bond between peptides is responsible for the (primary /secondary /tertiary /quaternary) structure of a protein. (Delete incorrect answers) (2 pts) 2. (a) Of the twenty amino acids, onlyof them are termed essential amino acids. (1pt (b) What does it mean when an amino acid is termed "essential"? (2 pts) 3. Draw an example of hydrogen bonding between the carbonyl group and the secondary NH group of two different amino acids in the...
7.Draw the basic structure of an amino acid dimer (two amino acids bound together); label an...
7.Draw the basic structure of an amino acid dimer (two amino acids bound together); label an amine, carboxyl, side chainand peptide bond. 8.Define primary and tertiary protein structure. How does the tertiary structure depend on the primary structure?
In the linear polymers of amino acids, the 42 group of one amino acid is linked...
In the linear polymers of amino acids, the 42 group of one amino acid is linked to the 43 group of another amino acid. 44 is the order in which the amino acids are covalently linked together through the peptide bond. The secondary (2) structure of proteins is the 45_ of the polypeptide chain backbone. C. Short Answer (12%)
Question 1 (0.5 points) Saved Proteins are formed by joining together. carboxylic acids fatty acids amino...
Question 1 (0.5 points) Saved Proteins are formed by joining together. carboxylic acids fatty acids amino acids none of the above Question 2 (0.5 points) Which two functional groups does an amino acid contain? amine and carboxylic acid carboxylic acid and amide amide and heterocyclic ring heterocyclic ring and amine Question 3 (0.5 points) Do amino acids commonly exist in nature as neutral molecules with all uncharged atoms? Yes No Question 1 (0.5 points) What is a protein? A polymer...
CHM 230 F'19 Amino acids/peptides Worksheet 1. Draw the structure, at pH 7, of a tetrapeptide...
CHM 230 F'19 Amino acids/peptides Worksheet 1. Draw the structure, at pH 7, of a tetrapeptide that is composed of four different amino acid residues, each from a different category (classification). Draw an arrow to every peptide bond in this peptide. Identify by name the C-terminal residue and the N-terminal residue. Give the abbreviation of this tetrapeptide using three-letter codes. 2. Identify the amino acid residue whose R groun is drawn below in the "clothes line" format
60) Lipids are composed of: c) fatty acids and glycerol amino acids and glycerol nucleic acids...
60) Lipids are composed of: c) fatty acids and glycerol amino acids and glycerol nucleic acids and glycerol fatty acids and water fatty acids and sugar e) 61) The bond between two amino acids is a: a) hydrogen bond b) covalent bond c) peptide bond d) b and c e) none of the above 62) Hemoglobin has which tertiary structure: a) fibrous b) globular c) four subunits--two alpha chains, two beta chains d) alpha helix e) none of the above...
A peptide bond between two amino acids is what type of functional group? Ketone O Ester...
A peptide bond between two amino acids is what type of functional group? Ketone O Ester Amide O Disulfide Aldehyde The tertiary structure of a proteins is NOT held together by which type of bond/interaction? Hydrogen bond Electrostatic interactions Hydrophobic interactions Peptide bond Disulfide bonds
Proteins are made from chains of amino acids. The amino acids are joined together by structures...
Proteins are made from chains of amino acids. The amino acids
are joined together by structures called peptide
bonds.
Draw the dipeptide that results when a peptide bond is formed
between the two glycine molecules shown here. (Figure 1) Draw it as
it would occur at the pHpH of most body fluids.
Draw the molecule on the canvas by choosing buttons from the
Tools (for bonds), Atoms, and Advanced Template toolbars. The
single bond is active by default. Include all...
Consider the following amino acids for questions 11-13. Choose the best answers. cysteine serine lysine phenylalanine...
Consider the following amino acids for questions 11-13. Choose the best answers. cysteine serine lysine phenylalanine aspartate Which amino acid's R group has a pKa nearest physiological pH? Which amino acid would you most expect to find in the centre of a folded globular protein? Which amino amino acid can be phosphorylated? The overall charge on the peptide (G-R-A-M-P-S) at pH 12.5 is: -1 -0.5 -1.5 +0.5 1 15. What term best describes the protein secondary structure element drawn below:...
QUESTION 13 What chemical group is at the end of an amino acid chain corresponding to...
QUESTION 13 What chemical group is at the end of an amino acid chain corresponding to the 3' end of the mRNA molecule? A. Peptide bond B.5 phosphate group C.3" hydroxyl group D. Amino (N-terminus) E. Carboxyl (C-terminus) QUESTION 14 Which of the following is true regarding pre-mRNA modifications/processing? O A. Alternative splicing allows for increased complexity and synthesis of protein isomers OB. The 5' cap is added after RNA polymerase dissociates from the gene OC. The poly A tail...
. The covalent (ester / amide /hydrocarbon /hydrogen) bond between peptides is responsible for the (primary /secondary /tertiary /quaternary) structure of a protein. (Delete incorrect answers) (2 pts) 2. (a) Of the twenty amino acids, onlyof them are termed essential amino acids. (1pt (b) What does it mean when an amino acid is termed "essential"? (2 pts) 3. Draw an example of hydrogen bonding between the carbonyl group and the secondary NH group of two different amino acids in the...
In the linear polymers of amino acids, the 42 group of one amino acid is linked to the 43 group of another amino acid. 44 is the order in which the amino acids are covalently linked together through the peptide bond. The secondary (2) structure of proteins is the 45_ of the polypeptide chain backbone. C. Short Answer (12%)
Question 1 (0.5 points) Saved Proteins are formed by joining together. carboxylic acids fatty acids amino acids none of the above Question 2 (0.5 points) Which two functional groups does an amino acid contain? amine and carboxylic acid carboxylic acid and amide amide and heterocyclic ring heterocyclic ring and amine Question 3 (0.5 points) Do amino acids commonly exist in nature as neutral molecules with all uncharged atoms? Yes No Question 1 (0.5 points) What is a protein? A polymer...
CHM 230 F'19 Amino acids/peptides Worksheet 1. Draw the structure, at pH 7, of a tetrapeptide that is composed of four different amino acid residues, each from a different category (classification). Draw an arrow to every peptide bond in this peptide. Identify by name the C-terminal residue and the N-terminal residue. Give the abbreviation of this tetrapeptide using three-letter codes. 2. Identify the amino acid residue whose R groun is drawn below in the "clothes line" format
60) Lipids are composed of: c) fatty acids and glycerol amino acids and glycerol nucleic acids and glycerol fatty acids and water fatty acids and sugar e) 61) The bond between two amino acids is a: a) hydrogen bond b) covalent bond c) peptide bond d) b and c e) none of the above 62) Hemoglobin has which tertiary structure: a) fibrous b) globular c) four subunits--two alpha chains, two beta chains d) alpha helix e) none of the above...
A peptide bond between two amino acids is what type of functional group? Ketone O Ester Amide O Disulfide Aldehyde The tertiary structure of a proteins is NOT held together by which type of bond/interaction? Hydrogen bond Electrostatic interactions Hydrophobic interactions Peptide bond Disulfide bonds
Proteins are made from chains of amino acids. The amino acids
are joined together by structures called peptide
bonds.
Draw the dipeptide that results when a peptide bond is formed
between the two glycine molecules shown here. (Figure 1) Draw it as
it would occur at the pHpH of most body fluids.
Draw the molecule on the canvas by choosing buttons from the
Tools (for bonds), Atoms, and Advanced Template toolbars. The
single bond is active by default. Include all...
Consider the following amino acids for questions 11-13. Choose the best answers. cysteine serine lysine phenylalanine aspartate Which amino acid's R group has a pKa nearest physiological pH? Which amino acid would you most expect to find in the centre of a folded globular protein? Which amino amino acid can be phosphorylated? The overall charge on the peptide (G-R-A-M-P-S) at pH 12.5 is: -1 -0.5 -1.5 +0.5 1 15. What term best describes the protein secondary structure element drawn below:...
QUESTION 13 What chemical group is at the end of an amino acid chain corresponding to the 3' end of the mRNA molecule? A. Peptide bond B.5 phosphate group C.3" hydroxyl group D. Amino (N-terminus) E. Carboxyl (C-terminus) QUESTION 14 Which of the following is true regarding pre-mRNA modifications/processing? O A. Alternative splicing allows for increased complexity and synthesis of protein isomers OB. The 5' cap is added after RNA polymerase dissociates from the gene OC. The poly A tail...
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