Multiple Choice
Which tool is used to determine the specific triplet codons that correspond to each amino acid?
29. Amino Acids
Proteins and Amino Acids
Back29. Amino Acids
Proteins and Amino Acids
- Multiple ChoiceThe unique properties of the 20 common amino acids are determined by which of the following?
- Multiple ChoiceThe codon UAA is known as a stop codon. What does it code for in protein synthesis?
- Multiple ChoiceHow did Hershey and Chase use radioactivity to determine whether proteins or DNA were the genetic material?
- Multiple ChoiceWhich of the following correctly describes peptidoglycan?
- Multiple ChoiceHow many amino acids does each codon code for in the genetic code?
- Textbook Question
Show the peptides that would result from cleavage by the indicated reagent:
a. Val-Arg-Gly-Met-Arg-Ala-Ser by carboxypeptidase A
b. Ser-Phe-Lys-Met-Pro-Ser-Ala-Asp by cyanogen bromide
c. Arg-Ser-Pro-Lys-Lys-Ser-Glu-Gly by trypsin
- Multiple ChoiceWhich of the following molecules is responsible for coding the sequence of amino acids in a protein?
- Multiple ChoiceIn which way do the structures of amino acids differ from each other?
- Multiple ChoiceWhich of the following statements is NOT true about all of the naturally occurring amino acids (excluding glycine)?
- Textbook Question
For the enzyme isopentenyl pyrophosphate isomerase, IPP binds tightly as a result of interactions between the active site amino acid residues and the diphosphate of IPP. Without concerning yourself with the structure of amino acids, what charges might you expect to be present in the active site to hold IPP in place so that the enzymatic reactions can occur?
- Textbook Question
Show how the amino acid alanine can be synthesized from propanoic acid.
- Textbook Question
What alkyl halide is used in the acetamidomalonic ester synthesis to prepare
b. phenylalanine?
- Textbook Question
What alkyl halide is used in the acetamidomalonic ester synthesis to prepare
a. lysine?
- Textbook Question
Reaction of a polypeptide with carboxypeptidase A releases Met. The polypeptide undergoes partial hydrolysis to give the following peptides. What is the sequence of the polypeptide?
1. Ser, Lys, Trp
2. Gly, His, Ala
3. Glu, Val, Ser
4. Leu, Glu, Ser
5. Met, Ala, Gly
6. Ser, Lys, Val
7. Glu, His
8. Leu, Lys, Trp
9. Lys, Ser
10. Glu, His, Val
11. Trp, Leu, Glu
12. Ala, Met