Question 1

How many different peptides could be produced using one each of the following amino acids? Ala,Gly,His,Cys

Accepted Answer

A) 6 
B) 16 
C) 24 
D) 64 
A) 6 
B) 16 
C) 24 
D) 64

Question 2

Consider the following titration curve for an amino acid.   At which of the following "pH" values would the amino acid be fully deprotonated?

Accepted Answer

A) A 
B) B 
C) D 
D) F 
A) A 
B) B 
C) D 
D) F

Question 3

Exhibit 26-2
MATCH a structure from the list below to each of the following terms.Place the letter of the structure in the blank to the left of the term which it describes.

-_____ small organic molecules which act as coenzymes.

Accepted Answer

A) 
  
B) 
  
C) 
Val−Phe−Leu−Met−Tyr−Pro−Gly−Trp−Cys−Glu 
D) 
  
E) 
  
F) Asp−Tyr−Ile−His−Pro−Phe−Arg−Val
G)
apoenzyme
H)   
I)  
J)   
K)   
L) Val−Lys−Phe−Gly−Arg−Met−Arg−Phe
M) vitamins 
A) 
  
B) 
  
C) 
Val−Phe−Leu−Met−Tyr−Pro−Gly−Trp−Cys−Glu 
D) 
  
E) 
  
F) Asp−Tyr−Ile−His−Pro−Phe−Arg−Val
G)
apoenzyme
H)   
I)  
J)   
K)   
L) Val−Lys−Phe−Gly−Arg−Met−Arg−Phe
M) vitamins

Question 4

Exhibit 26-1
Refer to the data below to answer the following question(s):
Leucine is an essential amino acid with the systematic name 2-amino-3-methylpentanoic acid.It has pKS1U1B1a1S1U1B0 = 2.36 and pKS1U1B1a2S1U1B0 = 9.60.
-Refer to Exhibit 26-1.Leucine is described as an essential amino acid.What does this mean?

Accepted Answer

Humans are able to synthesize only 10 of

Question 5

Consider the following image.   Which level of protein structure is shown in the box?

Accepted Answer

A) Primary 
B) Secondary 
C) Tertiary 
D) Quaternary 
A) Primary 
B) Secondary 
C) Tertiary 
D) Quaternary

Exam 26: Biomolecules: Amino Acids,peptides,and Proteins

How many different peptides could be produced using one each of the following amino acids? Ala,Gly,His,Cys

Consider the following titration curve for an amino acid. At which of the following "pH" values would the amino acid be fully deprotonated?

Exhibit 26-2 MATCH a structure from the list below to each of the following terms.Place the letter of the structure in the blank to the left of the term which it describes. -_____ small organic molecules which act as coenzymes.

Exhibit 26-1 Refer to the data below to answer the following question(s): Leucine is an essential amino acid with the systematic name 2-amino-3-methylpentanoic acid.It has pKa1 = 2.36 and pKa2 = 9.60. -Refer to Exhibit 26-1.Leucine is described as an essential amino acid.What does this mean?

Consider the following image. Which level of protein structure is shown in the box?

Structure and Bonding

Polar Covalent Bonds;acids and Bases

Organic Compounds: Alkanes and Their Stereochemistry

Organic Compounds: Cycloalkanes and Their Stereochemistry

Stereochemistry at Tetrahedral Centers

An Overview of Organic Reactions

Par 1

Alkenes: Structure and Reactivity

Alkenes: Reactions and Synthesis

Alkynes: an Introduction to Organic Synthesis

Organohalides

Reactions of Alkyl Halides: Nucleophilic Substitutions and Eliminations

Par 2

Structure Determination: Mass Spectrometry and Infrared Spectroscopy

Structure Determination: Nuclear Magnetic Resonance Spectroscopy

Conjugated Compounds and Ultraviolet Spectroscopy

Par 3

Benzene and Aromaticity

Chemistry of Benzene: Electrophilic Aromatic Substitution

Alcohols and Phenols

Ethers and Epoxides;thiols and Sulfides

Aldehydes and Ketones: Nucleophilic Addition Reactions

Par 4

Carboxylic Acids and Nitriles

Carboxylic Acid Derivatives: Nucleophilic Acyl Substitution Reactions

Carbonyl Alpha-Substitution Reactions

Carbonyl Condensation Reactions

Par 5

Amines and Heterocycles

Biomolecules: Carbohydrates

Par 7

Biomolecules: Lipids

Biomolecules: Nucleic Acids

The Organic Chemistry of Metabolic Pathways

Orbitals and Organic Chemistry: Pericyclic Reactions

Synthetic Polymers

Par 1

Filters

Exhibit 26-1 Refer to the data below to answer the following question(s): Leucine is an essential amino acid with the systematic name 2-amino-3-methylpentanoic acid.It has pK_a1 = 2.36 and pK_a2 = 9.60. -Refer to Exhibit 26-1.Leucine is described as an essential amino acid.What does this mean?