This topic contains a solution. Click here to go to the answer

Author Question: The structure of at the isoelectric point is: A) D) B) E) C) ... (Read 90 times)

geodog55

  • Hero Member
  • *****
  • Posts: 530
The structure of at the isoelectric point is:
   
  A)
   
 
  D)
   
 
  B)
   
 
  E)
   
 
  C)
   
 

Question 2

The isoelectric pH (pI) of is likely to be at a pH that is
   
  A)
  below pK1.
  B)
  at pK1.
  C)
  between pK1 and pK2.
  D)
  at pK2.
  E)
  above pK2.

Question 3

At the isoelectric point, the structure of methionine (2-amino-4-methylthiobutanoic acid) is:
  A)
   
 
  D)
   
 
  B)
   
 
  E)
   
 
  C)
   
 

Question 4

Based on the equilibria shown below, what is the net charge on structure IV?
   
   
  A)
  2
  B)
  1
  C)
  0
  D)
  +1
  E)
  +2

Question 5

Which of the following will migrate toward the positive electrode in an electrophoresis experiment?
   
   
   
   
   
   
  A)
  I
  B)
  II
  C)
  III
  D)
  I and III
  E)
  none will migrate

Question 6

Based on the pKa's of aspartic acid shown below, what is its approximate isoelectric point?
   
   
   
   
 
  A)
  2
  B)
  3
  C)
  5
  D)
  7
  E)
  10

Question 7

If an amino acid has one carboxyl group and one amino group, and the pKa's are 2.4 and 9.8 respectively, what is its isoelectric point?
  A)
  3.7
  B)
  6.1
  C)
  7.0
  D)
  7.9
  E)
  12.2



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

uniquea123

  • Sr. Member
  • ****
  • Posts: 311
Answer to Question 1

b

Answer to Question 2

c

Answer to Question 3

d

Answer to Question 4

a

Answer to Question 5

b

Answer to Question 6

b

Answer to Question 7

b




geodog55

  • Member
  • Posts: 530
Reply 2 on: Aug 23, 2018
Great answer, keep it coming :)


kusterl

  • Member
  • Posts: 315
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

For a complete list of videos, visit our video library