PORTAGE MICROBIOLOGY EXAM #3 QUESTIONS WITH COMPLETE SOLUTIONS VERIFIED GRADED A+
What is the total magnification of a sample imaged with a 60x objective and a 10x eyepiece? (short answer)
60 x 10 = 600x magnification
True or False: A cell that is adherent, flat, and unstained is easily identifi...
What is the total magnification of a sample imaged with a 60x objective and a 10x
eyepiece? (short answer)
60 x 10 = 600x magnification
True or False: A cell that is adherent, flat, and unstained is easily identified using
bright field microscopy
False. Adherent, flat cells are almost invisible due to the limits on both resolution and
contrast
Which of the following could be seen clearly by the unaided eye? (multiple
choice)
Protozoa with diameter of 150um and skin cell with diameter of 1500 um (have to be
greater than 100um
Label the following unmarked microscope components by matching it with the
components provided
1. Eyepiece
2. Neck
3. Fine adjustment knob
4. Objective
5. Stage
6. Base
, This type of microscope is best suited for visualizing GFP, RFP and YFP proteins
(given list of microscopes)
Flourescence
This type of microscope can provide detailed images of live cells without staining
(given list of microscopes)
Phase-Contrast
This type of microscope is used to greatly increase the contrast between samples
and background by reflecting light off of the specimen (given list of microscopes)
Dark Field
This type of microscope is capable of capturing images in multiple focal planes
rendering specimen in 3D (given list of microscopes)
Confocal
Identify what type of electron microscope was used to capture the following
image and explain your choice
A: TEM, shows 2-D rendering
B: SEM shows 3-D shell models
Gram-Positive cells appear _____ in color due to a _____ peptidoglycan layer in
the cell wall (fill in the blanks)
Purple, thick
Gram-Negative cells appear _____ in color due to a _____ peptidoglycan layer in
the cell wall (fill in the blanks)
Pink, thin
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 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 NurseAdvocate. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £6.89. You're not tied to anything after your purchase.
