Various bacterial enzymes that dissolve fibrin clots are ________.

A. coagulases
B. hyaluronidases
C. keratinases
D. mucinases
E. kinases


Answer: E

Biology & Microbiology

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Bacteriophages may reproduce using a __________ pathway in which viral DNA becomes part of the

host chromosome. Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

The restriction enzyme used in constructing hybrid molecules of certain gene sequences and plasmid DNA acts by

A. transcribing plasmid DNA into a transformed molecule. B. opening DNA molecules at specific sites, leaving sticky ends exposed. C. binding human genes to bacterial plasmids. D. allowing a hybrid plasmid DNA into a transformed molecule. E. sealing plasmid DNA and foreign DNA into a closed circle.

Biology & Microbiology

Which one of the following is characteristic of both living organisms and non-living material?

A. the capacity to evolve B. the ability to reproduce C. complexity, with spatial organization on several levels D. the ability to change in response to the environment E. obeying the basic laws of chemistry and physics

Biology & Microbiology

Which of the following does NOT cycle through an

ecosystem? a. water b. carbon c. energy d. phosphorus e. nitrogen

Biology & Microbiology