This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Which of the following is a definition of the isoelectric point of an amino acid? a. The pH at ... (Read 138 times)

captainjonesify

  • Hero Member
  • *****
  • Posts: 543
on: Aug 23, 2018
Which of the following is a definition of the isoelectric point of an amino acid?
 a. The pH at which an amino acid has no net charge
  b. The pH at which the -NH2 group is completely protonated
  c. The melting point of an amino acid
  d. The conductivity of a 1 M solution of an amino acid in water

Question 2

What is the approximate value of the pKa of the -NH3+ of amino acids?
 a. 2
  b. 5
  c. 9
  d. 12

Question 3

What is the approximate value of the pKa of the -CO2H of amino acids?
 a. 2
  b. 5
  c. 9
  d. 12


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

T4T

  • Sr. Member
  • ****
  • Posts: 348
Reply #1 on: Aug 23, 2018
Answer to Question 1

a

Answer to Question 2

c

Answer to Question 3

a


captainjonesify

  • Hero Member
  • *****
  • Posts: 543
Reply #2 on: Aug 23, 2018
Both answers were spot on, thank you once again


T4T

  • Sr. Member
  • ****
  • Posts: 348
Reply #3 on: Aug 23, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Overview of the citric acid cycle Overview of the citric acid cycle
An overview of the citric acid cycle. An overview of the citric acid cycle.
Versatility of the pyridoxal phosphate Schiff base (aldimine) in amino acid reactions Versatility of the pyridoxal phosphate Schiff base (aldimine) in amino acid reactions
the transamination product of tryptophan is decarboxylated to yield indole-3-acetic acid, or auxin the transamination product of tryptophan is decarboxylated to yield indole-3-acetic acid, or auxin
Proteins Are Made of Amino Acids Proteins Are Made of Amino Acids
Acid–Base Balance Acid–Base Balance
Video: Osmosis - water transport

For a complete list of videos, visit our video library