Which of the following will result when 1% to 5% agar is added to nutrient broth, boiled and cooled?

A) A solid medium
B) A liquid medium
C) A mixed culture
D) A contaminated medium
E) A pure culture


A) A solid medium

Biology & Microbiology

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The molten globule model of protein folding suggests:

A. hydrogen bonding of secondary structures drives folding. B. translation of the polypeptide is complete before folding begins. C. each domain of a polypeptide folds independently. D. intermediates of increasing free energy are created. E. hydrophobic residues coalesce to form intermediate structures.

Biology & Microbiology

Graded potentials are particularly important for conveying stimulus intensity in

A. sensory neurons. B. motor neurons. C. interneurons. D. skeletal muscle cells. E. Schwann cells.

Biology & Microbiology

How many weeks does prenatal development last in humans?

a. 31 b. 38 c. 40 d. 45 e. 52

Biology & Microbiology

When fat enters the duodenum, which hormone is stimulated to be released?

a. amylase b. secretin c. gastrin d. cholecystokinin

Biology & Microbiology