The most abundant serum antibody a. IgG b. IgA c. IgE d. IgM A person who has be

Question

The most abundant serum antibody a. IgG b. IgA c. IgE d. IgM A person who has been vaccinated against a disease should have primarily which of these types of antibodies 2 years later a. IgM b. IgE c. IgA d. IgG Which of these is associated with allergies? a. IgM b. IgE c. IgA d. IgG Which of the following cells cannot replicate in response to a specific antigen a. B cells b. Cytotoxic T cells c. Helper T cells d. plasma cells Which technique is used to separate DNA molecules a. cloning b. gel electrophoresis c. ligation d. restriction In recombinant DNA technology, _____ is used to seal a gap, in a DNA molecule a. ligase b. DNA polymerase c. an endonuclease d. amylase Resistance to many antibiotics is carried on a. R factor plasmids b. sex pili c. chromosomes d. A factor plasmids Repair mechanisms that occur during DNA synthesis are 1. mismatch repair 2. proofreading by DNA polymerase 3. light repair 4. SOS repair 5. excision repair a. 1 and 2 b. 2 and 3 c. 3 and 4 d. 4 and 5 Thymine dimer formation is the result of exposing DNA to a. UV light b. base analogs c. transposons d. X-rays e. intercalating agents Which the following processes does not result in recombination a. transformation b. conjugation c. transduction d. replication Plasmids and viruses are the most common vectors used for gene cloning. a. true b. false

Explanation / Answer

Ans 42 a)IgG is the most abundant serum antibody. IgA is the most abundant plasma antibody. IgM is mostly present in blood and lymph fluid.

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