When should the chemical fume hood be used?

when working with bad-smelling bacterial cultures
when working with microorganisms requiring BSL-2 safety precautions
when working with infectious microorganisms
when using hazardous chemicals


when using hazardous chemicals

Biology & Microbiology

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The hydroxyapatite that makes up the bulk of the bony endoskeleton of vertebrates is found in:

A. osteocytes. B. the extracellular matrix of osteocytes. C. the collagen. D. osteoblasts.

Biology & Microbiology

An individual with cystic fibrosis carrying two different mutant alleles would be a(n) ____________________ heterozygote for the disease

Fill in the blank(s) with correct word

Biology & Microbiology

Compare and contrast the out-of-Africa model and multiregional theories of the origin of modern man. Which theory is supported by the preponderance of genetic evidence? What type of evidence supports the other theory

What will be an ideal response?

Biology & Microbiology

Which of the following is false regarding the

properties of sound? a. The amplitude of a sound corresponds to loudness. b. The frequency of a sound is the number of wave cycles per second. c. Every ten-decibel increase in loudness represents a tenfold increase in intensity. d. A soft sound has a greater amplitude than a loud sound. e. A high note and a low note with the same amplitude are equally loud.

Biology & Microbiology