Which is the amino acid having maximum buff- ering capacity at physiological pH?

Which is the amino acid having maximum buff-

ering capacity at physiological pH?
by

1 Answer

Answer :

Histidine.
by

Related questions

Which amino acid has a net positive charge at physiological pH?

Description : Which amino acid has a net positive charge at physiological pH?

Last Answer : Arginine and lysine.

Amino acids excepting histidine are not good buffering agents in cell because (A) They exist as zwitter ions (B) Their pk and not in the physiological pH of a cell (C) Only Histidine has pk of its R group at 6.0 unlike the others which have at a different pH (D) None of these

Description : Amino acids excepting histidine are not good buffering agents in cell because (A) They exist as zwitter ions (B) Their pk and not in the physiological pH of a cell (C) Only Histidine has pk of its R group at 6.0 unlike the others which have at a different pH (D) None of these

Last Answer : Answer : C

The true statement about solutions of amino acids at physiological pH is (A) All amino acids contain both positive and negative charges (B) All amino acids contain positively charged side chains (C) Some amino acids contain only positive charge (D) All amino acids contain negatively charged side chains

Description : The true statement about solutions of amino acids at physiological pH is (A) All amino acids contain both positive and negative charges (B) All amino acids contain positively charged side chains ... amino acids contain only positive charge (D) All amino acids contain negatively charged side chains

Last Answer : Answer : A

The true statement about solutions of amino acids at physiological pH is (A) All amino acids contain both positive and negative charges (B) All amino acids contain positively charged side chains (C) Some amino acids contain only positive Charge (D) All amino acids contain negatively charged side chains

Description : The true statement about solutions of amino acids at physiological pH is (A) All amino acids contain both positive and negative charges (B) All amino acids contain positively charged side chains ... amino acids contain only positive Charge (D) All amino acids contain negatively charged side chains

Last Answer : (A) All amino acids contain both positive and negative charges

The greatest buffering capacity at physiologic pH would be provided by a protein rich in which of the following amino acids ? (A) Lysine (B) Histidine (C) Aspartic acid (D) Valine

Description : The greatest buffering capacity at physiologic pH would be provided by a protein rich in which of the following amino acids ? (A) Lysine (B) Histidine (C) Aspartic acid (D) Valine

Last Answer : Answer : B

ATP is called a. A nucleoside b. Physiological currency c. An amino acid d. Polynucleotide

Description : ATP is called a. A nucleoside b. Physiological currency c. An amino acid d. Polynucleotide

Last Answer : b. Physiological currency

A monocarboxylic acid decolourise `Br_(2) - H_(2)O`, on heating with soda lime derivate of styrene is formed , with neutral `FeCl_(3)` , a buff colour

Description : A monocarboxylic acid decolourise `Br_(2) - H_(2)O`, on heating with soda lime derivate of styrene is formed , with neutral `FeCl_(3)` , a buff colour

Last Answer : A monocarboxylic acid decolourise `Br_(2) - H_(2)O`, on heating with soda lime derivate of styrene is formed , ... . Acid could be : A. B. C. D.

When the net charge on an amino acid is zero, the pH is maintained as? (A) 4.5 (B) 11.2 (C) 7.0 (D) 9.1

Description : When the net charge on an amino acid is zero, the pH is maintained as? (A) 4.5 (B) 11.2 (C) 7.0 (D) 9.1

Last Answer : Answer : C

Isoelectric pH of an amino acid is that pH at which it has a (A) Positive charge (B) Negative charge (C) Nil net charge (D) None of these

Description : Isoelectric pH of an amino acid is that pH at which it has a (A) Positive charge (B) Negative charge (C) Nil net charge (D) None of these

Last Answer : Answer : C

Isoelectric pH of an amino acid is that pH at which it has a (A) Positive charge (B) Negative charge (C) No charge (D) None of these

Description : Isoelectric pH of an amino acid is that pH at which it has a (A) Positive charge (B) Negative charge (C) No charge (D) None of these

Last Answer : Answer : C

The amino acid which has a pK near 4 and thus is negatively charged at pH 7 is (A) Alanine (B) Glutamic acid (C) Glutamine (D) Aspargine

Description : The amino acid which has a pK near 4 and thus is negatively charged at pH 7 is (A) Alanine (B) Glutamic acid (C) Glutamine (D) Aspargine

Last Answer : Answer : B

Isoelectric pH of an amino acid is that pH at which it has a (A) Positive charge (B) Negative charge (C) No net charge (D) All of these

Description : Isoelectric pH of an amino acid is that pH at which it has a (A) Positive charge (B) Negative charge (C) No net charge (D) All of these

Last Answer : Answer : C

Which one of the following statements concerning glutamine is correct? (A) Contains three tetratable groups (B) Is classified as an acidic amino acid (C) Contains an amide group (D) Migrates to the cathode during electrophoresis at pH 7.0

Description : Which one of the following statements concerning glutamine is correct? (A) Contains three tetratable groups (B) Is classified as an acidic amino acid (C) Contains an amide group (D) Migrates to the cathode during electrophoresis at pH 7.0

Last Answer : Answer : C

Which one of the amino acids could serve as the best buffer at pH 7? (A) Glutamic acid (B) Arginine (C) Valine (D) Histidine

Description : Which one of the amino acids could serve as the best buffer at pH 7? (A) Glutamic acid (B) Arginine (C) Valine (D) Histidine

Last Answer : Answer : D

The pH of an amino acid depends (A) Optical rotation (B) Dissociation constant (C) Diffusion coefficient(D) Chain length

Description : The pH of an amino acid depends (A) Optical rotation (B) Dissociation constant (C) Diffusion coefficient(D) Chain length

Last Answer : Answer : B

At a pH below the isoelectric point, an amino acid exists as (A) Cation (B) Anion (C) Zwitterion (D) Undissociated molecule

Description : At a pH below the isoelectric point, an amino acid exists as (A) Cation (B) Anion (C) Zwitterion (D) Undissociated molecule

Last Answer : Answer : A

At isoelectric pH, an amino acid exists as (A) Anion (B) Cation (C) Zwitterion (D) None of these

Description : At isoelectric pH, an amino acid exists as (A) Anion (B) Cation (C) Zwitterion (D) None of these

Last Answer : Answer : C

At physiological pH the ammonia is protonated to form

Description : At physiological pH the ammonia is protonated to form

Last Answer : At physiological pH the ammonia is protonated to form

The following attribute of a drug tends to reduce its volume of distribution: A. High lipid solubility B. Low ionisation at physiological pH values C. High plasma protein binding D. High tissue binding

Description : The following attribute of a drug tends to reduce its volume of distribution: A. High lipid solubility B. Low ionisation at physiological pH values C. High plasma protein binding D. High tissue binding

Last Answer : C. High plasma protein binding

The following attribute of a drug tends to reduce its volume of distribution: A. High lipid solubility B. Low ionisation at physiological pH values C. High plasma protein binding D. High tissue binding

Description : The following attribute of a drug tends to reduce its volume of distribution: A. High lipid solubility B. Low ionisation at physiological pH values C. High plasma protein binding D. High tissue binding

Last Answer : C. High plasma protein binding

The following attribute of a drug tends to reduce its volume of distribution: A. High lipid solubility B. Low ionisation at physiological pH values C. High plasma protein binding D. High tissue binding

Description : The following attribute of a drug tends to reduce its volume of distribution: A. High lipid solubility B. Low ionisation at physiological pH values C. High plasma protein binding D. High tissue binding

Last Answer : C. High plasma protein binding

What does it feel like to be buff?

Description : What does it feel like to be buff?

Last Answer : It’s great to be able to not feel a twinge of insecurity anywhere between nude and bundled for snow. There are scary times though when thoughts of what to do next entered my mind (years ago). I found I was much more of an exhibitionist then.

Are you a skateboard history buff?

Description : Are you a skateboard history buff?

Last Answer : look on ebay sometimes you can find out about alot of old stuff there

How much for a buff and paint on a Prius bumper?

Description : How much for a buff and paint on a Prius bumper?

Last Answer : maybe like $100 at a cheap place

Is it really illegal for a firefighter to rescue someones sleeping in the buff?

Description : Is it really illegal for a firefighter to rescue someones sleeping in the buff?

Last Answer : answer:I can comfortably say “no” without doing any research. And if by some stretch of the imagination it is, I can assure you whatever obscure law this is traced back to is utterly and completely ignored by firefighters. They’re not going to leave you there to die because you’re naked.

How to Buff Up a Resume?

Description : How to Buff Up a Resume?

Last Answer : With the rough economy and competition for jobs of every type, a strong resume will help you stand out of the crowd and help land an interview for your dream job. Buff up your resume with these helpful ... and should not be included in your resume in order to land the job youâ⠬⠢re looking for.

Can I buff scratches out of my hardwood floor with a floor sander?

Description : Can I buff scratches out of my hardwood floor with a floor sander?

Last Answer : In order to get a floor sander one must have accurate and precise knowledge of the issue at hand and must have the expertise to solve the conundrum okay.

The highly polished monolithic Ashokan Pillars were carved out of single pieces of a buff-coloured sandstone, usually mined from the quarries of?

Description : The highly polished monolithic Ashokan Pillars were carved out of single pieces of a buff-coloured sandstone, usually mined from the quarries of?

Last Answer : Chunar near Mirzapur

The amino acids in which the R groups have a net positive charge at pH 7.0 are (A) Lysine, Arginine, Histidine (B) Lysine, Aspargine (C) Histidine, Aspargine (D) Glutamine, Arginine

Description : The amino acids in which the R groups have a net positive charge at pH 7.0 are (A) Lysine, Arginine, Histidine (B) Lysine, Aspargine (C) Histidine, Aspargine (D) Glutamine, Arginine

Last Answer : Answer : A

When amino acids are treated with neutral formaldehyde, the pH of the mixture (A) Is not altered (B) Increases (C) Decreases (D) First increases then decreases

Description : When amino acids are treated with neutral formaldehyde, the pH of the mixture (A) Is not altered (B) Increases (C) Decreases (D) First increases then decreases

Last Answer : Answer : C

The only correct statement about chymotrypsin is (A) It is formed from trypsin (B) Carboxypeptidase converts trypsin into chymotrypsin (C) Its optimum pH is around 7 (D) It hydrolyses peptide bonds involving basic amino acids

Description : The only correct statement about chymotrypsin is (A) It is formed from trypsin (B) Carboxypeptidase converts trypsin into chymotrypsin (C) Its optimum pH is around 7 (D) It hydrolyses peptide bonds involving basic amino acids

Last Answer : Answer : C

At neutral pH, a mixture of amino acids in solution would be predominantly: (A) Dipolar ions (B) Nonpolar molecules (C) Positive and monovalent (D) Hydrophobic

Description : At neutral pH, a mixture of amino acids in solution would be predominantly: (A) Dipolar ions (B) Nonpolar molecules (C) Positive and monovalent (D) Hydrophobic

Last Answer : Answer : A

At neutral pH, a mixture of amino acids in solution would be predominantly: (A) Dipolar ions (B) Nonpolar molecules (C) Positive and monovalent (D) Hydrophobic

Description : At neutral pH, a mixture of amino acids in solution would be predominantly: (A) Dipolar ions (B) Nonpolar molecules (C) Positive and monovalent (D) Hydrophobic

Last Answer : (A) Dipolar ions

The pH at which the amino acid shows no tendency to migrate when placed in an electric field is known as its : (a) Isoelectric point (b) Dipole moment (c) Iodine number (d) Wavelength

Description : The pH at which the amino acid shows no tendency to migrate when placed in an electric field is known as its : (a) Isoelectric point (b) Dipole moment (c) Iodine number (d) Wavelength

Last Answer : Isoelectric point

Which of the following is correct for an amino acid solution when it is in the acidic form? (a) pH > pKa (b) pH < pKa (c) zwitterionic (d) pH = 7

Description : Which of the following is correct for an amino acid solution when it is in the acidic form? (a) pH > pKa (b) pH < pKa (c) zwitterionic (d) pH = 7

Last Answer : pH < pKa

It is the only amino acid having an ionizing ‘R’ group with a pK’ near 7 and is important in the active site of some enzymes: (A) Arginine (B) Cystein (C) Cystine (D) Histidine

Description : It is the only amino acid having an ionizing ‘R’ group with a pK’ near 7 and is important in the active site of some enzymes: (A) Arginine (B) Cystein (C) Cystine (D) Histidine

Last Answer : Answer : D

Pre-proinsulin contains a signal sequence having (A) 9 amino acid residues (B) 19 amino acid residues (C) 27 amino acid residues (D) 33 amino acid residues

Description : Pre-proinsulin contains a signal sequence having (A) 9 amino acid residues (B) 19 amino acid residues (C) 27 amino acid residues (D) 33 amino acid residues

Last Answer : Answer : B

Insulin is made up of (A) A single polypeptide chain having 51 amino acid residues (B) A single polypeptide chain having 84 amino acid residues (C) A-chain having 21 and B-chain having 30 amino acid residues (D) A-chain having 30 and B-chain having 21 amino acid residues

Description : Insulin is made up of (A) A single polypeptide chain having 51 amino acid residues (B) A single polypeptide chain having 84 amino acid residues (C) A-chain having 21 and B-chain having 30 amino acid residues (D) A-chain having 30 and B-chain having 21 amino acid residues

Last Answer : Answer : C

An amino acid having a hydrophilic side chain is (A) Alanine (B) Proline (C) Methionine (D) Serine

Description : An amino acid having a hydrophilic side chain is (A) Alanine (B) Proline (C) Methionine (D) Serine

Last Answer : Answer : D

The essential amino acids (A) must be supplied in the diet because the organism has lost the capacity to aminate the corresponding ketoacids (B) must be supplied in the diet because the human has an impaired ability to synthesize the carbon chain of the corresponding ketoacids (C) are identical in all species studied (D) are defined as these amino acids which cannot be synthesized by the organism at a rate adequate to meet metabolic requirements

Description : The essential amino acids (A) must be supplied in the diet because the organism has lost the capacity to aminate the corresponding ketoacids (B) must be supplied in the diet because the ... amino acids which cannot be synthesized by the organism at a rate adequate to meet metabolic requirements

Last Answer : Answer : B

The essential amino acids (A) Must be supplied in the diet because the organism has lost the capacity to aminate the corresponding ketoacids (B) Must be supplied in the diet because the human has an impaired ability to synthesize the carbon chain of the corresponding ketoacids (C) Are identical in all species studied (D) Are defined as those amino acids which cannot be synthesized by the organism at a rate adequate to meet metabolic requirements

Description : The essential amino acids (A) Must be supplied in the diet because the organism has lost the capacity to aminate the corresponding ketoacids (B) Must be supplied in the diet because the ... amino acids which cannot be synthesized by the organism at a rate adequate to meet metabolic requirements

Last Answer : Answer : B

The ‘acid neutralizing capacity’ of an antacid is governed by: A. The equivalent weight of the antacid B. The pH of 1N solution of the antacid C. The rate at which the antacid reacts with HCl D. Both ‘A’ and ‘C’

Description : The ‘acid neutralizing capacity’ of an antacid is governed by: A. The equivalent weight of the antacid B. The pH of 1N solution of the antacid C. The rate at which the antacid reacts with HCl D. Both ‘A’ and ‘C’

Last Answer : D. Both ‘A’ and ‘C’

Stage at which seed achieves it maximum dry weight and has maximum germination potential and vigor is: a. Physiological maturity b. Edible maturity c. Harvest maturity d. None of above

Description : Stage at which seed achieves it maximum dry weight and has maximum germination potential and vigor is: a. Physiological maturity b. Edible maturity c. Harvest maturity d. None of above

Last Answer : Physiological maturity

Hormones act only on specific organs or tissues. These are called (A) Active sites (B) Reaction centre (C) Target organ/Tissue(D) Physiological site HORMONE METABOLISM 231

Description : Hormones act only on specific organs or tissues. These are called (A) Active sites (B) Reaction centre (C) Target organ/Tissue(D) Physiological site HORMONE METABOLISM 231

Last Answer : Answer : C

The main physiological buffer in the blood is (A) Haemoglobin buffer (B) Acetate (C) Phosphate (D) Bicarbonate

Description : The main physiological buffer in the blood is (A) Haemoglobin buffer (B) Acetate (C) Phosphate (D) Bicarbonate

Last Answer : Answer : D

Most of calcium is present in bone, but 2% present in soft tissue and the blood is called (A) Calcinated blood (B) Solidified blood (C) Physiological blood(D) Colloidal blood

Description : Most of calcium is present in bone, but 2% present in soft tissue and the blood is called (A) Calcinated blood (B) Solidified blood (C) Physiological blood(D) Colloidal blood

Last Answer : Answer : C

The only known physiological methylating agents in the animal organism are (A) Choline and betaine (B) Choline and δ-adenosyl methionine (C) Betaine and δ-adenyosyl methionine (D) Dimehtyl glycine and betaine

Description : The only known physiological methylating agents in the animal organism are (A) Choline and betaine (B) Choline and δ-adenosyl methionine (C) Betaine and δ-adenyosyl methionine (D) Dimehtyl glycine and betaine

Last Answer : Answer : C

Physiological glycosuria is met with in (A) Renal glycosuria (B) Alimentary glycosuria (C) Diabetes Mellitus (D) Alloxan diabetes

Description : Physiological glycosuria is met with in (A) Renal glycosuria (B) Alimentary glycosuria (C) Diabetes Mellitus (D) Alloxan diabetes

Last Answer : B

Velocity maximum for an enzyme at half the substrate concentration gives (A) The molecular weight of the enzyme (B) Km value (C) Isoelectric pH (D) Pk value

Description : Velocity maximum for an enzyme at half the substrate concentration gives (A) The molecular weight of the enzyme (B) Km value (C) Isoelectric pH (D) Pk value

Last Answer : Answer : B

The rate of most enzyme catalysed reactions changes with pH. As the pH increases, this rate (A) reaches a minimum, then increases (B) reaches a maximum, then decreases (C) increases (D) decreases

Description : The rate of most enzyme catalysed reactions changes with pH. As the pH increases, this rate (A) reaches a minimum, then increases (B) reaches a maximum, then decreases (C) increases (D) decreases

Last Answer : Answer : B