Exam (elaborations)
BIOS 260 Lab Exam: Questions and Answers 100% Pass
- Course
- Institution
BIOS 260 Lab Exam: Questions and Answers 100% Pass
[Show more]
Content preview
BIOS 260 Lab Exam: Questions and Answers 100% PassThe scan, 10X and 40X lenses and other parts of the microscope should not get any oil on
them. Correct Ans-True... this is very important
The stage should be moved down to add oil to the slide. Correct Ans-False
To remove the oil from the lenses, ______ should be used. Correct Ans-Lens paper
If you see rods under the microscope, the morphology is Correct Ans-bacillus
The name of the dye used in the negative stain is ________ and it is ________________.
Correct Ans-nigrosin, acidic
Bacteria have a ____________________________ surface. Correct Ans-negative charged
The negative staining technique is used to
You Answered
, BIOS 260 Lab Exam: Questions and Answers 100% Pass
a. determine morphology and cellular arrangement that are too delicate to withstand heat-
fixing
b. determine the accurate size since there is minimal cell shrinkage
c. identify acid-fast organisms
differentiate gram-negative organisms Correct Ans-A and B
If you look in the microscope and see chains of organisms, the prefix is termed _______.
Correct Ans-strepto
If you look in the microscope and see clusters of organisms, the prefix is termed ________.
Correct Ans-Staphylo
The dye we will use for the negative stain is called________, and it will stain the _____.
Correct Ans-nigrosin, background
If you see spheres under the microscope, the morphology of the bacteria is Correct Ans-
coccus
, BIOS 260 Lab Exam: Questions and Answers 100% Pass
If you see curved shaped organisms under the microscope, the morphology of the bacteria is
Correct Ans-spirals/spirillium
Purple organisms observed on a Gram stain are Correct Ans-Gram-positive
Red organisms observed on a Gram stain are Correct Ans-Gram-negative
The name of the decolorizer is Correct Ans-95% alcohol
The Gram stain is a(n) Correct Ans-differential stain
Red color is observed all throughout the growth medium in a motility test. Is this organism
motile? Correct Ans-Yes
Is an organism that remains along the stabline motile? Correct Ans-No
Motility test medium is inoculated with a Correct Ans-needle
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller GOLDTUTORS. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
76462 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now