Which antibody class is found in exocrine secretions?

a. IgG
b. IgA
c. IgE
d. IgD
e. IgM


ANSWER: b

Biology & Microbiology

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The double helix model of DNA structure was proposed by  

A.  Watson and Crick. B.  Griffith. C.  Avery. D.  Franklin. E.  Chargaff.

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Genes may show 50% recombination either when the genes are on different chromosomes or when the genes are far apart on the same chromosome

Indicate whether the statement is true or false

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The soft part of a plant body, such as a potato, consists largely of __________ tissue

a. sclerenchyma b. collenchyma c. parenchyma d. phloem e. xylem

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You want to determine the location of a specific protein in a cell using a colored stain. Which of the following is the

best technique for this purpose?

a. electron microscopy b. phase contrast microscopy c. bright-field microscopy d. fluorescence microscopy e. dark-field microscopy

Biology & Microbiology