2. Name an amino acid in which the R group contains the following: .Hydroxyl group .Second...
Indicate which of the amino acids on the left contains, within its R group, a moiety listed on the right. Clear All An aromatic group Leucine A sulfur atom Tyrosine An amide group Cysteine A branched hydrocarbon Asparagine None of the above moieties
2. Amino Acids a.) Which amino acid is this: A substitution on the methyl group of this amino acid with a hydroxyl group yields the amino acid Ser and substitution with a phenyl group yields the amino acid Phe. b.) Which amino acid has an a-amino group that is bonded directly to two C atoms, forming a ring?
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...
Fill in the blanks for each amino acid Amino Acid Properties Name of R-group Properties Amino Acid Type of Polarity pKa Charge at Special functional group pH-7 Properties (hn(wpp)amgies applicable) (whpee Alanine Arginine Asparagine Aspartate Carboxyl Polar 3.9 Sulfhydryl Polar N/A Forms S-S Glutamine Glutamate Histidine Isoleucine Lysine Methionine Phenylalanine Aromatic Non-Polar Absorbs G@ 280 nm N/A Proline Can be Serine Threonine Tryptophane Tyrosine Valine
Understand alpha helices and beta pleated sheets Question The coiling of an a-helix is maintained in position by which of the following bonds? Select the correct answer below: hydrogen bonds between the oxygen atom in the carbonyl group in one amino acid and the hydrogen atom of the hydroxyl group in an R-group of another amino acid that is four amino acids farther along the chain O hydrogen bonds between the oxygen atom in the carbonyl group in one amino...
1.)Carbohydrates are aldehydes or ketones that contain multiple ___________ groups. hydroxyl phosphate methyl amino 2.) The type of lipid that contains a four-ring structure and does not contain fatty acids is: glycolipid. phospholipid. steroid. triglyceride. none of the above 3.)Amino acids contain a(n): "R" side chain. carboxylic acid group. amine group. all of the above none of the above 4.An alpha helix is an example of which type of structure? Primary Structure Secondary Structure Tertiary Structure Quaternary Structure Pental Structure...
Understand alpha helices and beta pleated sheets Question The coiling of an a-helix is maintained in position by which of the following bonds? Select the correct answer below: O hydrogen bonds between the oxygen atom in the carbonyl group in one amino acid and the hydrogen atom of the hydroxyl group in an R-group of another amino acid that is four amino acids farther along the chain O hydrogen bonds between the oxygen atom in the carbonyl group in one...
Question 18 (4 points) Friedel-Crafts acylation reactions cannot be performed on aniline because: The amino group gets acylated instead of the aromatic ring. The amino group attacks the Lewis acid to form an acid-base complex in which the aromatic ring is strongly deactivated. The amino group is strongly activating and multiple substitutions occur on the aromatic ring. The amino group is strongly deactivating preventing any substitution on the aromatic ring.
Which type of organic compound contains a hydroxyl functional group? Multiple Choice ester ether carboxylic acid aldehyde ketone
help asap Friedel-Crafts acylation reactions cannot be performed on aniline because: The amino group attacks the Lewis acid to form an acid-base complex in which the aromatic ring is strongly deactivated. The amino group is strongly activating and multiple substitutions occur on the aromatic ring. The amino group is strongly deactivating preventing any substitution on the aromatic ring. The amino group gets acylated instead of the aromatic ring. Which of the following produces no reaction? -O'Na+ + H2O CH3 Li+...