



Study with the several resources on Docsity
Earn points by helping other students or get them with a premium plan
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Community
Ask the community for help and clear up your study doubts
Discover the best universities in your country according to Docsity users
Free resources
Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors
Portage Learning BIOD 171 Module 3 Exam Questions And Answers
Typology: Exams
1 / 6
This page cannot be seen from the preview
Don't miss anything!
Does phase contrast microscopy require staining? - - - correct answer ✅No Simple staining is used mostly for... - - - correct answer ✅A quick observance Simple staining uses __________ dye. - - - correct answer ✅Positively charged Acid fast stain is used for... - - - correct answer ✅bacteria resistant to traditional staining; mostly for mycobacterium tuberculosis Resolution - - - correct answer ✅distance between two objects at which the objects can still be seen as separate Contrast - - - correct answer ✅difference in light absorbance between 2 areas
Dark field microscopy light - - - correct answer ✅reflects light off of specimen at an angle Can you see intracellular structures with a dark field microscope? - -
correct answer ✅No What microscope can capture in 3-D? - - - correct answer ✅Confocal What are the two types of electron microscopes? - - - correct answer ✅transmission electron microscope (TEM) and scanning electron microscope (SEM) What is the difference between TEM and SEM? - - - correct answer ✅TEM passes through the sample, SEM reflects off the surface Gram staining was developed by - - - correct answer ✅Hans Christian Gram in 1884
What does Giesma detect? - - - correct answer ✅Blood parasites What is stained during negative staining? - - - correct answer ✅Everything but the microorganism What color does Giesma stain? What type of cell? - - - correct answer ✅Nuclei: bluish purple Cytoplasm: pink White Blood Cells What type of samples are acid-fast stains often performed on? - - - correct answer ✅Sputum The naked eye can see - - - correct answer ✅100 micrometers Cellular organelles can be as small as - - - correct answer ✅.2 micrometers
Does phase contrast need staining? - - - correct answer ✅No What is different about phase contrast microscopy compared to brightfield? - - - correct answer ✅You are able to visualize things that would otherwise be invisible; cells are highly distinguishable What type of microscopy uses lasers? - - - correct answer ✅Confocal Does electron microscopy use live or dead samples? - - - correct answer ✅Dead Does electron microscopy use fixation? - - - correct answer ✅Yes What type of microscopy are samples coated with gold or platinum? - - - correct answer ✅Electron- SEM