Description : Histamine is formed from histidine by (A) Deamination (B) Dehydrogenation (C) Decarboxylation (D) Carboxylation
Last Answer : Answer : C
Description : Histidine is converted to histamine through the process of (A) Transamination (B) Decarboxylation (C) Oxidative deamination (D) Urea cycle
Last Answer : Answer : B
Description : Histidine is converted into histamine by (A) Carboxylation (B) Decarboxylation (C) Methylation (D) Hydroxylation
Description : Explain in brief about leukotrienes and prostaglandins Leukotrienes and prostaglandins are formed only when the mast cell undergo degranulation and enzymatic break down of phospholipids in the plasma membrane ?
Last Answer : The effects produced by them are more pronounced and long lasting than histamine. Leukotrienes mediate mucous production and bronchoconstriction. Prostaglandin D2 causes bronchoconstriction.
Description : Which of the amino acid produces a vasodilator on decarboxylation? (A) Glutamin acid (B) Histidine (C) Ornithine (D) Cysteine
Description : A vasodilating compound is produced by the decarboxylation of the amino acid: (A) Arginine (B) Aspartic acid (C) Glutamine (D) Histidine
Last Answer : Answer : D
Description : How many types of histamine receptors are there and what are they ?
Last Answer : There are three types of histamine receptors. They are H1, H2 and H3.They has different tissue distributions.
Description : Which of the following amino acids produce a vasoconstrictor on decarboxylation? (A) Histidine (B) Tyrosine (C) Threonine (D) Arginine
Description : Explain in brief about cytokines Cytokines activate inflammatory cells such as neutrophils and eosnophils ?
Last Answer : IL-5 is important in activation of eosnophils, IL-4 increases IgE production by B-cells. IL-4, Il-5, IL-6, TNF-a has been secreted by human mast cells.
Description : Histamine is formed from histidine by the enzyme histidine decarboxylase in the presence of (A) NAD (B) FMN (C) HS-CoA (D) B6-PO4
Description : Modern bread is formed with amino acid (a) Histidine (b) Lysine (c) Leucine (d) All
Last Answer : (d) All
Description : What is meant by decarboxylation of an amino acid?
Last Answer : The carboxyl group is removed from the amino acids to form the corresponding amine
Description : which codon is code for the amino acid histidine?
Last Answer : It is CAC and CAU.
Description : What condon is the code for the amino acid histidine (His)?
Last Answer : Feel Free to Answer
Description : An amino acid used for the synthesis of thyroid hormone is (A) Tyrosine (B) Tryptophan (C) Histidine (D) Proline
Last Answer : Answer : A
Description : An amino acid required for porphyrin synthesis is (A) Proline (B) Glycine (C) Serine (D) Histidine
Description : Which of the following amino acid has been shown as one of the active site of phosphoglucomutase? (A) Lysine (B) Tyrosine (C) Serine (D) Histidine
Description : The amino acid which synthesizes many hormornes: (A) Valine (B) Phenylalanine (C) Alanine (D) Histidine
Description : Neutral amino acid is (A) Leucine (B) Lysine (C) Aspartic acid (D) Histidine
Description : All α-amino acids have one asymmetric carbon atom except (A) Arginine (B) Glycine (C) Aspartic acid (D) Histidine
Description : The amino acid which contains an indole group is (A) Histidine (B) Arginine (C) Cystine (D) Tryptophan
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
Description : The lone pair of electrons at one of the ring nitrogens in the given amino acid makes a potential ligand, which is important in binding the iron atoms in hemoglobin: (A) Tryptophan (B) Threonine (C) Histidine (D) Serine
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
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
Description : An amino acid not involved in urea cycle is (A) Arginine (B) Histidine (C) Ornithine (D) Citrulline
Description : The amino acid which synthesizes many hormones: (A) Valine (B) Phenyl alanine (C) Alanine (D) Histidine
Description : The basic amino acid: (A) Glycine (B) Leucine (C) Histidine (D) Proline
Description : The neutral amino acid is (A) Lysine (B) Proline (C) Leucine (D) Histidine
Description : The amino acid which contains an indole group is (A) Histidine (B) Arginine (C) Glycine (D) Tryptophan
Description : The amino acid which contains a guanidine group is (A) Histidine (B) Arginine (C) Citrulline (D) Ornithine
Description : This amino acid cannot have optical isomers: (A) Alanine (B) Histidine (C) Threonine (D) Glycine
Description : Seratonin is derived in the body from the following amino acid: (A) Phenylalanine (B) Histidine (C) Tryptophan (D) Serine
Description : An amino acid that does not take part in α helix formation is (A) Histidine (B) Tyrosine (C) Proline (D) Tryptophan
Description : An amino acid not found in proteins is (A) β-Alanine (B) Proline (C) Lysine (D) Histidine
Description : Which of the following amino acid participate in urea cycle?(a) Argininie (b) Lysine (c) Tryptophan (d) Histidine
Last Answer : (a) Argininie
Description : What is an agretope ?
Last Answer : The region of an antigenic peptide, which binds to MCH molecule, is known as agretope.
Description : What is agglutination ?
Last Answer : Clumping of particles or cells is called agglutination.
Description : What is an agglutinin ?
Last Answer : A substance can mediate clumping of the cells or particles.
Description : What is adoptive transfer ?
Last Answer : The ability to participate in the immune response by the process of transplantation of cells is adoptive transfer.
Description : What is an abzyme ?
Last Answer : It is a monoclonal antibody, which has catalytic activity.
Description : How viral load can be measured ?
Last Answer : Viral load is measured by PCR based techniques.
Description : What is the first overt indication of AIDS ?
Last Answer : The first overt indication of AIDS may be infection with the fungus Candida albicans, which causes sores in the mouth and in women vulvovaginal yeast infection is formed that will not respond to the treatment given.
Description : What does HAART do ?
Last Answer : HAART will lower the viral load and improves the health of the patients who are suffering with AIDS.
Description : What is the current treatment given to AIDS ?
Last Answer : Current treatment given to AIDS is HAART (highly active anti retroviral therapy).It is a combination therapy.
Description : What are major successful vaccines ?
Last Answer : Major successful vaccines are live attenuated and heat killed vaccines.
Description : What do most vaccines function as ?
Last Answer : Most of the vaccines prevent disease but not infection.
Description : What does myeloid immunodeficiency cause ?
Last Answer : Myeloid immunodeficiency causes phagocytic function, which is impaired. Those who are affected with this will suffer with increase in susceptibility to bacterial infection.
Description : What does immunodeficiency results ?
Last Answer : Immunodeficiency results in failure of one or more components of immune system.
Description : What does HIV results ?
Last Answer : HIV results in impairment of immune function by depletion oh CD4+ T cells.