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c) Give the structure of an eight carbon alkane with an amino group in position 3...
Lecture 3 Identify amino-/carboxy termini, and R-group on amino acid What is chirality? Identify a carbon...
Lecture 3 Identify amino-/carboxy termini, and R-group on amino acid What is chirality? Identify a carbon that is chiral (i.e., has 4 different groups attached) Chiral compounds rotate plane polarized light Memorize amino acid 1) structure, 2) classification (hydrophobic, aliphatic, aromatic, negatively charged, positively charged, polar uncharged) Be able to draw glycine (the generic amino acid) Given an amino acid structure and pKas of ionizable groups, be able to determine the charge at pH 1, pH 14, and pH 7...
3. Which of the following represents a Lewis structure of a noncyclic alkane contains five carbon...
3. Which of the following represents a Lewis structure of a noncyclic alkane contains five carbon atoms: H H I I H-C-C-CEC-C-H II H H A. H ннн H H H-C-C-C=c-c-H В. H нH н IIII H-C-C-C-C-C-H IIIII H H С. H H нНН 3. Which of the following represents a Lewis structure of a noncyclic alkane contains five carbon atoms: H H I I H-C-C-CEC-C-H II H H A. H ннн H H H-C-C-C=c-c-H В. H нH н IIII...
please answer! 3) Protein structure and amino acid side chains a) Give examples of the types...
please answer!
3) Protein structure and amino acid side chains a) Give examples of the types if attractive forces found between the side chains of the following amino acid residue pairs at pH 7.4 00 Leu and Phe (ii) Two Cys (ii) Asp and Thr (iv) Asp and Arg b) Of the 4 levels of protein structure, which ones are stabilized by interactions between amino acid side chains? c) Identify the two regular types of secondary structures and describe the...
Complete the structure below for the compound (2R. 3S)-3-amino-2-pentanol. Keeping the position of the amino and...
Complete the structure below for the compound (2R. 3S)-3-amino-2-pentanol. Keeping the position of the amino and hydroxy groups the same, draw a diastereomer of the compound you drew in part a. Write the top view for all stereoisomers of 1,2,3-trimethylcyclopentane (draw the cyclopentane ring in the plane of the paper). Clearly draw each stereoisomer using wedges and dashed bonds. You will lose credit for any duplications! Draw a 3-D orbital picture for the ethyl carbocalion. showing both carbon atoms in...
5. The chemical properties of an amino acid is determined by a. structure of it's group...
5. The chemical properties of an amino acid is determined by a. structure of it's group b. it's central carbon molecule c. structure of it's amino group d. hydrogen molecule e. it's carboxyl group 6. Different amino acids are joined by dehydration synthesis to make proteins. How many different amino acids are there? a. 15 b. 30 c. 20 d. 25 e. 40 7. Lipids are composed of a fits b. sugar c. glycerol d. A and C e. A...
Identify the molecule being described in the following statements. Unknown X is an acyclic 5-carbon alkane...
Identify the molecule being described in the following statements. Unknown X is an acyclic 5-carbon alkane containing an alcohol functional group. Oxidation with PCC provides an aldehyde product. Dehydration with POCla/Pyridine gives a di-substituted alkene product. Provide a plausible structure for unknown X Unknown X is an acyclic 6-carbon alkane containing an alcohol with formula CsH13BrO. Treatment witlh NaH generates an unsymmetrical epoxide, which when treated with HBr generates a tertiary alkyl halide. The starting material cannot be oxidized, however...
Write the structure and give the IUPAC systematic name of an alkane or cycloalkane with the...
Write the structure and give the IUPAC systematic name of an alkane or cycloalkane with the formulas (a) C8H18 that has only primary hydrogen atoms, (b) C6H12 that has only secondary hydrogen atoms, (c) C6H12 that has only primary and secondary hydrogen atoms, and (d) C8H14 that has 12 secondary and 2 tertiary hydrogen atoms.
4.48 Give the skeletal structure and name of the straight-chain alkane or cycloalkane whose molecular formula...
4.48 Give the skeletal structure and name of the straight-chain alkane or cycloalkane whose molecular formula is shown. a. C,H12 b. C.H e. C,H, io
7. Using resonance structures show how the amino group would effect the electron density on the...
7. Using resonance structures show how the amino group would
effect the electron density on the ring carbons of the following
compound. Would you expect an electrophile to attack this molecule
at the ortho, meta or para position(s)?
8. Draw the structure of (3R,
4R)-3-(3-fluorophenyl)-4-formylhexan-2-one
ing resonance structures, show how the amino group would effect the electron density on the ring carbons of the following compound. Would you expect an electrophile to attack this molecule at the ortho, meta or...
1. Which is a true statement about amino acids? a. They are amphiprotic b. The a-carbon...
1. Which is a true statement about amino acids? a. They are amphiprotic b. The a-carbon has an ester attached c. They are symmetrical d. They are planar e. The α-carbon has a phosphate group attached 2. Which is an incorrect statement regarding the side chains of amino acids? a. Tryptophan, tyrosine, and phenylalanine contain an aromatic group. b. Isoleucine, and leucine are isomers of each other. c. Lysine and methionine contain an amine group. d. Threonine, serine, and tyrosine...
Lecture 3 Identify amino-/carboxy termini, and R-group on amino acid What is chirality? Identify a carbon that is chiral (i.e., has 4 different groups attached) Chiral compounds rotate plane polarized light Memorize amino acid 1) structure, 2) classification (hydrophobic, aliphatic, aromatic, negatively charged, positively charged, polar uncharged) Be able to draw glycine (the generic amino acid) Given an amino acid structure and pKas of ionizable groups, be able to determine the charge at pH 1, pH 14, and pH 7...
3. Which of the following represents a Lewis structure of a noncyclic alkane contains five carbon atoms: H H I I H-C-C-CEC-C-H II H H A. H ннн H H H-C-C-C=c-c-H В. H нH н IIII H-C-C-C-C-C-H IIIII H H С. H H нНН 3. Which of the following represents a Lewis structure of a noncyclic alkane contains five carbon atoms: H H I I H-C-C-CEC-C-H II H H A. H ннн H H H-C-C-C=c-c-H В. H нH н IIII...
please answer!
3) Protein structure and amino acid side chains a) Give examples of the types if attractive forces found between the side chains of the following amino acid residue pairs at pH 7.4 00 Leu and Phe (ii) Two Cys (ii) Asp and Thr (iv) Asp and Arg b) Of the 4 levels of protein structure, which ones are stabilized by interactions between amino acid side chains? c) Identify the two regular types of secondary structures and describe the...
Complete the structure below for the compound (2R. 3S)-3-amino-2-pentanol. Keeping the position of the amino and hydroxy groups the same, draw a diastereomer of the compound you drew in part a. Write the top view for all stereoisomers of 1,2,3-trimethylcyclopentane (draw the cyclopentane ring in the plane of the paper). Clearly draw each stereoisomer using wedges and dashed bonds. You will lose credit for any duplications! Draw a 3-D orbital picture for the ethyl carbocalion. showing both carbon atoms in...
5. The chemical properties of an amino acid is determined by a. structure of it's group b. it's central carbon molecule c. structure of it's amino group d. hydrogen molecule e. it's carboxyl group 6. Different amino acids are joined by dehydration synthesis to make proteins. How many different amino acids are there? a. 15 b. 30 c. 20 d. 25 e. 40 7. Lipids are composed of a fits b. sugar c. glycerol d. A and C e. A...
Identify the molecule being described in the following statements. Unknown X is an acyclic 5-carbon alkane containing an alcohol functional group. Oxidation with PCC provides an aldehyde product. Dehydration with POCla/Pyridine gives a di-substituted alkene product. Provide a plausible structure for unknown X Unknown X is an acyclic 6-carbon alkane containing an alcohol with formula CsH13BrO. Treatment witlh NaH generates an unsymmetrical epoxide, which when treated with HBr generates a tertiary alkyl halide. The starting material cannot be oxidized, however...
4.48 Give the skeletal structure and name of the straight-chain alkane or cycloalkane whose molecular formula is shown. a. C,H12 b. C.H e. C,H, io
7. Using resonance structures show how the amino group would
effect the electron density on the ring carbons of the following
compound. Would you expect an electrophile to attack this molecule
at the ortho, meta or para position(s)?
8. Draw the structure of (3R,
4R)-3-(3-fluorophenyl)-4-formylhexan-2-one
ing resonance structures, show how the amino group would effect the electron density on the ring carbons of the following compound. Would you expect an electrophile to attack this molecule at the ortho, meta or...
1. Which is a true statement about amino acids? a. They are amphiprotic b. The a-carbon has an ester attached c. They are symmetrical d. They are planar e. The α-carbon has a phosphate group attached 2. Which is an incorrect statement regarding the side chains of amino acids? a. Tryptophan, tyrosine, and phenylalanine contain an aromatic group. b. Isoleucine, and leucine are isomers of each other. c. Lysine and methionine contain an amine group. d. Threonine, serine, and tyrosine...
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