In Southern blotting, DNA fragments on filters must be ____________________ so that probes can

bond with them. Fill in the blank(s) with the appropriate word(s).


ANS: split or denatured

Biology & Microbiology

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You sit next to Uncle Ed, an immunologist, at Thanksgiving dinner. "I'm a 'big eater'", he says, "just like the cells I study." What are the large cells that engulf pathogens that Uncle Ed works with? 

A. monocytes B. erythrocytes C. macrophages D. bacteriophages E. antibodies

Biology & Microbiology

Which naturalist wrote a 44-volume natural history on plants and animals, and suggested migration, environmental influences, isolation, and overcrowding might affect how organisms descend with modifications?

A. Darwin B. Leclerc C. Lamarck D. Cuvier E. Lyell

Biology & Microbiology

Plasma cells produce (antibody/chemokine/cytotoxic) molecules

What will be an ideal response?

Biology & Microbiology

Which of the following is true concerning homeostasis?

A) Homeostasis is the maintenance of a rigid internal environment with no variation. B) Homeostasis allows for major fluctuations in body conditions. C) The maintenance of homeostasis relies mainly on positive feedback. D) Homeostasis is the maintenance of a relatively stable internal environment.

Biology & Microbiology