1) The structural formulas of amino acids are the same EXCEPT for the
E)side (R) group
2) Glycine is the only naturally occurring amino acid that is
D)in the L- form
3) Hemoglobin is an example of a protein with
A)a globular structure
B)a primary structure only
C)primarily an alpha helix structure
D)two protein chains held together
E)primarily a beta-pleated sheet structure
4) Within hemoglobin, the heme functions as
A) a reducing agent
B)a disulfide bridge
C)one of the four protein subunits
D)an oxygen carrier
E)an alpha subunit
5)Name the following compound
C)ethyl propyl ether
6) Which carboxylic acid in the list below is an aromatic carboxylic acid?
7)What is the common name for ethanoic acid?
8)What is the IUPAC name for this compound?
E)y-methyl butyric acid
9)with the correct choice of acid, the product(s) of the acid hydrolysis of N-methylbenzamide could be
A)methanol and benzoic acid
B)benzoic acid and ethylamine
C)formic acid and aniline
D)benzoic acid and methylammonium chloride
E)formic acid, phenol, and ammonia
10)amides are derivatives of ____ and ____
D)alcohols; carboxylic acids
E)carboxylic acids; alcohols
11) The reaction of butanoicacids and dimethylamine gives
12)One name for this compound is
13)When acetic acid reacts with ammonia, NH3, the reaction called amidation yields
14) What is the name of this compound?
15) Denaturation of a protein
A)can only occur in a protein with quaternary structure
B)changes the primary structure of a protein
C)hydrolyzes peptide bonds
D)is always irreversible
E)disrupts the secondary, tertiary, or quarternary structure of a protein
16) What kinds of interactions are NOT part of tertiary protein structure?
17)The function of myoglobin is to
A)carry vitamins in the blood
B)provide strength in cartilage
C)carry oxygen in the blood
D)support the skeletal muscles
E)carry oxygen in the muscle
18) Which of the following is an example of a secondary protein structure?
19) In the peptide Ala-Try-Gly-Phe, the N-terminal amino acid is
20) A ___ consists of a nitrogen-containing base and a sugar
21) The bonds that link the base pairs in the DNA double helix are
22)When DNA replicates, a guanine forms a base pair with
23) In the synthesis of mRNA, an adenine in the DNA pairs with
24) Which of the following can NOT be found in a nucleotide of RNA?
25)which of the following is found in RNA but not in DNA?
26) When DNA replicates, a guanine forms a base pair with
27) Which bases "pair" in RNA? Explain or show why they pair.
28) Which bases "pair" in DNA? Explain or show why they pair.
29) Describe how myoglobin and hemoglobin are similar. How are they different.
31) Explain/define primary structure as it applies to a protein.
32) Explain/define secondary structure as it applies to a protein.
33) Explain/define Tertiary structure as it applies to a protein.
34) Explain/define Quaternary structure as it applies to a protein.
35) Draw a tripeptide (using any amino acids that you want). Label the C terminus, the N terminus, and circle a peptide bond.
36) Draw a primary structure for either DNA or RNA. Your structure should include 3 Nucleotides.
37) In the peptide Ser-Cys-Ala-Gly, the C-terminal end is
38)Acids and bases denature a protein by disrupting
A) ionic bonds and hydrophobic interactions
B)ionic bonds and hydrogen bonds
C)peptide bonds and ionic bonds
D)hydrophobic interactions and peptide bonds
E)amide bonds and alkene bonds
39) Hemoglobin has a total of ____ protein chains in its quaternary structure.
40) The heme in hemoglobin is a(n)
A)pleated sheet area in the hemoglobin molecule
B)helix area in the hemoglobin molecule
C)small molecule within a protein
E)oxygen molecule within the hemoglobin molecule
41) The alpha helix of the secondary structure of a protein is held together by ____ between two widely separated parts of a protein chain.
42) A peptide bond contains which kind of functional group?
43) Heavy metals denature proteins by
A) disrupting hydrophobic interactions
B) releasing amino acids
C) changing the pH of the protein solution
D) changing the temperature of the protein solution
E)disrupting disulfide bonds
44) In a typical amino acid zwitterion, the caroxylate end is
A) positively charged
B)soluble in a nonpolar solvent
C) attached to amine
45) Which group of Carbohydrates cannot be hydrolyzed to give smaller molecules?
46)A monosaccharide that consists of 5 carbon atoms, one of which is in a ketone groupe is classified as a(n)
47) A glycosidic bond between two monosaccharides can also be classified as a(n)
48) which of the following contains alpha-1,6-branches
49)under acid hydrolysis conditions, starch is converted to
50)amino acids that are not synthesized in the body and must be obtained from diet are called
51) The following amino acid R group chain is
52) Amylose is a form of starch which has
A)carbon-carbon bonds joining glucose units
B)both alpha-1,4-and Beta-1,4-bonds between glucose units
C)only alpha-1,4-links bonds glucose units
D)hemiacetal links joining glucose units
E)only beta-1,4-bonds between glucose units
53)In the L-isomer of a Fischer projection of a monosaccharide, the -OH group furthest from the carbonyl is written
A)on the right of the bottom chiral carbon
B)on the left of the middle chiral carbon
C)on the left of the bottom chiral carbon
D)on the left of the top chiral carbon
E)on the right of the top chiral carbon
54)The peptide bonds that combine amino acids in a protein are
55) The bonds that are important in the secondary structure of a protein are