Exam (elaborations)
Portage Learning: Microbiology, Module 3 – MICROSCOPY |Questions with 100% Correct Answers | Updated & Verified | 2024
- Course
- Institution
micrometer - one millionth of a meter nanometer - one billionth of a meter
[Show more]
Content preview
Portage Learning: Microbiology, Module 3 – MICROSCOPY |Questions with 100% Correct Answers | Updated & Verified | 2024 micrometer - ✔✔one millionth of a meter nanometer - ✔✔one billionth of a meter resolution and contrast - ✔✔two critical factors that influence our ability to see an object resolution - ✔✔the distance between two objects at which the objects still can be seen as separate greater - ✔✔the closer two objects are to each other the __________________ the resolution requirement contrast - ✔✔the difference in light absorbance bet ween two areas (objects) lower - ✔✔the ________________ the contrast between an object and its background, the harder it will be to see the object bright field microscope - ✔✔simplest form of light, or optical, microscopy/light, most often emitted from a standard halogen bulb, enters the microscope from the base (bottom) and is reflected via mirrors towards the sample condenser - ✔✔before the light reaches the sample, it first passes through a ________________ converging the light beams into a focused ar ea on the sample iris diaphragm - ✔✔controls the amount of light that passes through the sample and into the objective lens objective lens - ✔✔the lens closest to the sample and yields the greatest amount of magnification directly proportional - ✔✔the d egree of magnification is ______________________ to the amount of light needed/to image samples clearly at higher magnifications, more light is required ocular lens - ✔✔eyepiece 10x - ✔✔most common power of ocular lens total magnification - ✔✔objective x ocular lens= staining - ✔✔required due to the limitation of resolution on unstained cells, (i.e.) often the flat and transparent regions of a cell may appear invisible under bright field conditions/with various dyes, th ese regions can become labeled and thus visualized. phase contrast microscope - ✔✔able to visualize certain structures that would otherwise be invisible/ can provide detailed images of live cells without staining./uses specialized condensers and objective s, it amplifies the slight differences between cells and the surrounding medium (background) to make the cells highly distinguishable/can be used to visualize cell movementsThe 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 VasilyKichigin. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.48. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
73314 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now
