Description : Hinge region, the region of Ig molecule which is flexible and more exposed to enzymes is the (A) Region between first and second constant regions of H chain (domains CH1 and CH2) (B) Region between second and ... H chain (CH2 and CH3) (C) Variable regions of H chain (D) Variable regions of L chain
Last Answer : Answer : A
Description : The portion of the immunoglobulin molecule that binds the specific antigen is formed by (A) Variable regions of H and L chains (B) Constant region of H chain (C) Constant region of L chain (D) Hinge region
Description : Identify type of the intermolecular forces in the following compounds. a. CH3 – OH b. CH2 = CH2 c. CHCl3
Last Answer : Identify type of the intermolecular forces in the following compounds. a. CH3 – OH b. CH2 = CH2 c. CHCl3 d. CH2Cl2
Description : What is the name for CH3-CHBr-CH2-CH3?
Last Answer : This compound is bromobutane.
Description : Which of the following terms best describes the compound below? CH3(CH2)26CO2CH2(CH2)32CH3 (a) a fat (b) a wax (c) a terpene (d) an unsaturated triglyceride
Last Answer : a wax
Description : Which of the following terms best describes the compound below? CH3(CH2)7CH=CH(CH2)7CO2H (a) an unsaturated fatty acid (b) a triglyceride (c) a synthetic detergent (d) a micelle
Last Answer : an unsaturated fatty acid
Description : Which of the following terms best describes the compound below? CH3(CH2)12CO2H (a) a fatty acid (b) an oil (c) a wax (d) a soap
Last Answer : a fatty acid
Description : CH3(CH2)4 is the sodium salt of hexanoic acid. The water solubility of this salt is : (a) higher than that of hexanoic acid (b) lower than that of hexanoic acid (c) completely insoluble (d) not predictable
Last Answer : higher than that of hexanoic acid
Description : Which of the following compounds would react most rapidly in an SN2 reaction? (a) CH3CH2I (b) CH2=CH–I (c) (CH3)2CHI (d) (CH3)3CI
Last Answer : CH3CH2I
Description : Predict which of the following alkenes reacts the fastest with HCl? (a) CH3CH2CH2CH2CH=CH2 (b) cis-CH3CH2CH=CHCH2CH3 (c) trans-CH3CH2CH=CHCH2CH3 (d) (CH3)2C=CHCH2CH3
Last Answer : (CH3)2C=CHCH2CH3
Description : Which of the following compounds will react most readily with bromine in CCl4? (a) CH3CH2CH3 (b) (CH3)3CH (c) CH3CH=CH2 (d) (CH3)4C
Last Answer : CH3CH=CH2
Description : Which of the following compounds show geometrical isomerism (a) (CH3)3N (b) CH3CH=CH2 (c) (CH3)2NH (d) CH3CH=CHCH
Last Answer : CH3CH=CHCH
Description : Which of the following statement(s) is/are true concerning the antibody response to an invading antigen? a. All antibodies are composed of one type of heavy and one type of light protein chain b. ... stimulus d. Immunoglobulins A, D, and E play an active role in the circulating humoral response
Last Answer : Answer: a Humoral defenses consist of antibody (immunoglobulin; Ig) and complement. All Ig classes (IgM, IgG, IgA, IgE, IgD) and IgG subclasses are composed of one type (M, G, A, E, D ... exist in smaller amounts in the circulation and do not appear to play a major role as host defense components
Description : An antigen binding site on the IgG antibody is a combination of a. One variable region from a light chain and one from a heavy chain. b. Two variable regions from two light chains. c. Two ... from two heavy chains. d. One variable region from a constant region and one from a variable region.
Last Answer : a. One variable region from a light chain and one from a heavy chain.
Description : The effector function of antibody is performed by (A) Variable region of light chains (B) Constant region of heavy chains (C) Variable regions of light and heavy chains (D) Constant regions of light and heavy chains
Last Answer : Answer : D
Description : Recognition of antigen is the function of (A) Variable region of light chains (B) Variable regions of light and heavy chains (C) Constant region of heavy chains (D) Constant regions of light and heavy chains
Last Answer : Answer : B
Description : The variable region of light chain is the (A) N-terminal quarter (B) N-terminal half (C) C-terminal quarter (D) C-terminal half
Description : The number of hypervariable region in H chain is (A) 1 (B) 2 (C) 3 (D) 4
Description : The number of hypervariable region in L chain is (A) 1 (B) 2 (C) 3 (D) 4
Last Answer : Answer : C
Description : A light chain gene is constructed from the following segments: (A) Variable and constant segments (B) Variable, joining and constant segments (C) Variable, diversity and constant segments (D) Variable, joining, diversity and constant segments
Description : Leukocyte activation and adhesion to vascular endothelial cells is a critical step in the inflammatory process. This process is regulated by which of the following molecules? a. The selectins b. The b5 integrins c. The immunoglobulin supergene family d. Nitric oxide e. IL-8
Last Answer : Answer: a, c, d, e The temporal events that initiate and propagate neutrophil recruitment and inflammation include endothelial cell activation and expression of endothelial-derived ... role in neutrophil recruitment and activation, and the continued propagation of the inflammatory response
Description : Assertion : IgM is a type of immunoglobulin which cannot cross the placenta Reason : IgM is a pentamer immunoglobulin jointed by I-chain
Last Answer : Assertion : IgM is a type of immunoglobulin which cannot cross the placenta Reason : IgM is a ... D. If both the assertion and reason are false
Description : In the reaction of CH3CH2CH=CH2 with HCl, the H of the HCl will become attached to which carbon? (a) C-1 (b) C-2 (c) C-3 (d) C-4
Last Answer : C-1
Description : Acetamide is a much weaker base than ammonia. This is because (a) the electron withdrawing effect of the C=O group makes the lone pair of electrons on nitrogen atom less available for protonation. (b) ) ... NH2 group. (d) an H atom from the nitrogen is less easily lost from CH3CONH2 than from NH3.
Last Answer : the electron withdrawing effect of the C=O group makes the lone pair of electrons on nitrogen atom less available for protonation
Description : What orbitals overlap to create the H–C bond in CH3+? (a) sp3–sp3 (b) sp2–sp3 (c) s–p (d) s–sp2
Last Answer : s–sp2
Description : From his experiments, S.L. Miller produced amino acids by mixing the following in a closed flask. (a) CH4, H2, NH3 and water vapor at 800°C (b) CH3, H2, NH4 and water vapor at 800°C (c) CH4, H2, NH3 and water vapor at 600°C (d) CH3, H2, NH3 and water vapor at 600°C
Last Answer : a) CH4, H2, NH3 and water vapor at 800°C
Description : If is the difference in height between end points of a chain of length , the required slope correction is (A) h²/2l (B) h/2l (C) h²/l (D) 2h²/2l
Last Answer : (A) h²/2l
Description : The immunoglobulin which provides highest antiviral activity is (A) Ig D (B) Ig E (C) Ig A (D) Ig G
Description : The immunoglobulin having least concentration in serum is (A) Ig A (B) Ig M (C) Ig D (D) Ig E
Description : The immunoglobulin associated with reginic antibody is (A) Ig E (B) Ig D (C) Ig M (D) Ig A
Description : The immunoglobulin having highest molecular weight is (A) Ig G (B) Ig M (C) Ig E (D) Ig A MINERAL METABOLISM 187
Description : The immunoglobulin having highest sedimentation coefficient is (A) Ig G (B) Ig A (C) Ig M (D) Ig D
Description : The immunoglobulin possessing highest concentration of carbohydrate is (A) Ig G (B) Ig M (C) Ig A (D) Ig D
Description : Most heat labile immunoglobulin is (A) Ig G (B) Ig A (C) Ig M (D) Ig D
Description : The immunoglobulin possessing lowest concentration of carbohydrate is (A) Ig A (B) Ig E (C) Ig M (D) Ig G
Description : The immunoglobulin which can cross the placenta is (A) Ig A (B) Ig M (C) Ig G (D) Ig D
Description : The smallest immunoglobulin is (A) Ig G (B) Ig E (C) Ig D (D) Ig A
Description : A pentamer immunoglobulin is (A) Ig G (B) Ig A (C) Ig M (D) Ig E
Description : An immunoglobulin molecule always contains (A) 1 κ and 3 λ type of chains (B) 2 κ and 2 λ type of chains (C) 3 κ and 1λ type of chains (D) 2 κ and 2 λ chains
Description : The compound having the formula H2N—CO—NH—CH2—CH2—CH2—CH— COOH is | NH2 (A) Lysine (B) Glutamine (C) Serine (D) Citrulline
Description : Cysteine has the formula: (A) CH3SH (B) H2N—CH2—COOH (C) HS—CH2—CH(NH2)—COOH (D) S—CH2—CH(NH2)—COOH | S—CH2—CH(NH2)—COOH
Description : Bence-Jones protein is (A) An immunoglobulin (B) A dimer of heavy chains (C) A dimer of light chains (D) A dimer of one heavy and one light chains
Description : The immunoglobulin having the longest half-life is (A) IgA (B) IgG (C) IgM (D) IgE
Description : An immunoglobulin which can cross the placental barrier is (A) IgA (B) IgM (C) IgD (D) None of these
Description : An immunoglobulin found in exocrine secretions is (A) IgA (B) IgG (C) IgM (D) IgE
Description : The largest immunoglobulin is (A) IgA (B) IgG (C) IgM (D) IgD
Description : The most abundant immunoglobulin in plasma is (A) IgA (B) IgG (C) IgM (D) IgD
Description : The minimum number of polypeptide chains in an immunoglobulin is (A) Two (B) Four (C) Five (D) Six
Description : In an experiment l is the control variable m is the response variable and n and p are the extraneous factors. The specific units of are referred to as the treatments of the experiment?
Last Answer : Need answer