🧬 Biochemistry Solved MCQs with Answers

Practice 1490 approved 🧬 Biochemistry questions with verified answers from the 🧬 Medical Science subject for Pakistan exams.

1490 solved MCQs

Papain digest IgG intoAnswer: Two Fab fragments and one Fc fragment Antibodies can be usedAnswer: All of the above Type A bloodAnswer: Can be used to donate to type AB individuals Which of the following are responsible for immune specificity?Answer: Antibodies Which species lack immunoglobulin light chains?Answer: Camels Monoclonal refers toAnswer: All of the above β-Lymphocytes are often called simplyAnswer: B cells IgE providesAnswer: Immunity against some parasites Fab fragment hasAnswer: One antigen binding site The main function of antibodies is toAnswer: Chemically combine with the antigen which induces it, inactivate the antigen and protect the body from disease Alum is an effective adjuvant because itAnswer: Is immunogenic for T cells A secondary antibody is an antibody thatAnswer: Binds to another antibody The immunoglobulin fold isAnswer: a β-barrel composed of a three- and a four-stranded antiparallel β-sheet Antibodies of the IgG classAnswer: All of the above Each IgA antibody molecule consists ofAnswer: Four polypeptide chain and has two antigen binding site Antibodies in the human immune system can identify approximately 10⁸ different molecules Which one of the following is correct?Answer: Most of these antibodies recognize proteins Monoclonal antibodies were first produced byAnswer: Georges Kohler and Cesar Milstein A polyclonal antibody responseAnswer: Is produced by several B cells recognizing different pitopes on the same antigen Structures of anti-PCP antibody shows that the tight binding of PCP to the antibody is primarily due toAnswer: Hydrophobic forces Antigenic determinants bind to which portions of an antibody?Answer: Variable regions The humoral immune response relies on the production of soluble proteins calledAnswer: Antibodies The human IgG class of antibodies is divided intoAnswer: Four IgG classes For specific antigen recognition by T cells,Answer: Denaturation of antigen does not reduce epitope recognition Antigen, when injected in the body activates its specific lymphocytes in theAnswer: Draining lymph nodes A molecule that can be covalently linked to a non-immunogenic antigen to make it an immunogen is called a (n)Answer: Carrier Which of the following is incorrect with regard to antigen epitopes?Answer: B cells bind only processed antigen epitopes Very low doses of antigen may induceAnswer: Low zone tolerance During the lag period between antigen contact and detection of adaptive immunity,Answer: Innate immune effectors are eliminating antigen Lymphocytes are activated by antigen in theAnswer: Lymph nodes A pathogen can be a (n)Answer: All of the above