M5 Module 5 Exam - Requires Respondus LockDown Browser + Webcam.

M5: Module 5 Exam -
Requires Respondus
LockDown Browser +
Webcam
● Due No due date
● Points 100
● Questions 29
● Time Limit 60 Minutes
● Requires Respondus LockDown Browser



Attempt History

Attempt Time Score



LATEST Attempt 1 39 minutes 88 out of 100



Score for this quiz: 88 out of 100


Submitted Apr 27 at 1:40pm




1

,This attempt took 39 minutes.




Question 1

pts


The concept of treating all samples, whether known or unknown, as potentially hazardous (or
pathogenic) materials is known as __________.



Your Answer: universal


precaution


Universal precautions




Question 2

pts
List at least 3 observations a researcher would be sure to note while assessing an unknown
microbial sample.



Your Answer:


1. size and shape


2. presence of any chemical reactions




1

, 3. an observable motility


4. gram status, positive or negative


A lab researcher would be certain to note:



1. Size and shape
2. Any observable motility
3. Gram status (positive or negative)
4. The presence of any chemical reactions
5. Changes in color localized to the organism or the surrounding media
6. Capture (or draw) images of any of the characteristics described above




Question 3

pts


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?



Your Answer:


I would determine the presence of motility first because with motility, youre using a wet
mount. With determining gram status, you're heat fixing the sample. If I were to start with
gram staining first, the heat would kill the organism and I wouldnt be able to determine the
presence of any motility




1