The purpose of the clinical microbiology laboratory is to maintain cultures of microorganisms.
Answer the following statement true (T) or false (F)
False
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Mutation rates:
A. are higher in organisms with larger genomes. B. are similar across all organisms. C. are highest in viruses. D. are lower in organisms with larger genomes. E. are highest in the bacteria.
A new organism was found that was unicellular and 1 cm long. The "large" size of this organism alone would
A. mean that it could not be a bacterium. B. mean that it had to be a protista. C. mean little. D. mean that it had to be in the domain eukarya.
Which of the following is studied by a population geneticist?
a. How selective forces change the allele frequencies in a population over time b. How genetic traits and ecosystems affect the migration patterns of populations c. How embryological development impacts the expansion of a population d. How evolution causes the development of multiple species within a population
Which of the following skin defenses and its mechanism is mismatched?
A. Lysozyme; hydrolyzes peptidoglycan in bacterial cell walls B. Keratinized surface; protein that provides waterproofing C. Antimicrobial peptides; disrupt positively charged bacterial membranes D. Sebum; lipid hydrolysis leads to toxic by-products that inhibit microbial growth