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BIOD 171 : MODULE 5 EXAM 2025 QUESTIONS AND ANSWERS Define the concept of universal precautions. - ....ANSWER ...-Universal precautions means any and all samples, whether known or unknown, are to be treated as potentially hazardous (or pathogenic) materials. List at least 3 observations a researcher would be sure to note while assessing an unknown microbial sample. - ....ANSWER ...-1. size and shape 2. gram status 3. any observable motility While observing an unknown sample of limited amounts, a researcher must determine the following observations: (1) the presence of any motility and (2) its Gram status using the same sample—the liquid sample cannot be divided. Which would you determine first and why? - ....ANSWER ...-You would need to determine the motility first and then the Gram status. Motility requires a wet mount and Gram staining requires heat fixing the sample. If you perform a Gram ....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1