Which of the following would be classified as a delayed hypersensitivity reaction?

A) allergic contact dermatitis
B) anaphylaxis
C) cytotoxic hypersensitivity
D) immune complex hypersensitivity


Ans: A) allergic contact dermatitis

Biology & Microbiology

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Which procedure is most associated with unsuccessful transformation and degradation of DNA?

A. Induced transformation with plasmid DNA in noncompetent bacteria. B. Naturally-occurring transformation with DNA fragments in competent bacteria. C. Integration of DNA fragments in competent bacteria following naturally-occurring transformation.  D. Addition of DNA fragments from competent bacteria to live, noncompetent bacteria without artificial induction.

Biology & Microbiology

Which of the following is found in cocoa?

a. Epicatechin. b. Caffeine. c. Resveratrol. d. Curcumin. e. Nicotine.

Biology & Microbiology

Eukaryotic chromosomes are a combination of proteins and DNA, which allows the cell to perform which four essential functions?

What will be an ideal response?

Biology & Microbiology

In Cell Biology what can limit the progress of science?

a. Lymphocyte b. Progress c. Eating d. Bacteria e. Technology

Biology & Microbiology