BIOL 271 Module 3 (Latest Update 2026 /
2027) Microbiology Questions & Answers
{Grade A} 100% Correct - Portage Learning
What did they initial call these microorganisms? - Correct answer Animalcules
Was Microscopy always considered a sufficient tool? - Correct answer No, it took time
and evidence
What is immunohistochemistry? - Correct answer allows us to identify clearly the
cells, the substructures and molecules within cells.
Where did people initial think diseases come from? - Correct answer 1. from the gods
2. bad karma
3. person's character
Hippocrates - Correct answer his observations made him link between environment +
disease.
,When did microscope come to be? - Correct answer 1674, Antony Van LH
What the measurement rule used in Microscopy? - Correct answer to measure an
object, the unit must be smaller scale than the object itself
List the two measurements in Microscopy. - Correct answer 1. Micrometer um
2. Nanometer nm
Define Micrometer - Correct answer used to measure size of cells
1 millionth of a meter (10-6m)
Define Nanometer - Correct answer measures cellular organelles and viruses
one billionth of a meter equals (10-9m)
How much can the unaided eye see? - Correct answer 200 Micrometers
, What are the 3 main principles of Microscopy? - Correct answer Magnification,
resolution, Contrast
What is Magnification? - Correct answer Increase in size of an object
When does magnification occur? - Correct answer When radiation (light within the
electromagnetic spectrum) bends as it passes through a lens.
What is light refraction? - Correct answer When lights bends as it passes through a
lens or glass
process of light refraction - Correct answer 1. lens takes the light-beam
2. centers the light on focal point
3. span outward and invert
What type of wavelengths increase resolving power? - Correct answer Shorter
2027) Microbiology Questions & Answers
{Grade A} 100% Correct - Portage Learning
What did they initial call these microorganisms? - Correct answer Animalcules
Was Microscopy always considered a sufficient tool? - Correct answer No, it took time
and evidence
What is immunohistochemistry? - Correct answer allows us to identify clearly the
cells, the substructures and molecules within cells.
Where did people initial think diseases come from? - Correct answer 1. from the gods
2. bad karma
3. person's character
Hippocrates - Correct answer his observations made him link between environment +
disease.
,When did microscope come to be? - Correct answer 1674, Antony Van LH
What the measurement rule used in Microscopy? - Correct answer to measure an
object, the unit must be smaller scale than the object itself
List the two measurements in Microscopy. - Correct answer 1. Micrometer um
2. Nanometer nm
Define Micrometer - Correct answer used to measure size of cells
1 millionth of a meter (10-6m)
Define Nanometer - Correct answer measures cellular organelles and viruses
one billionth of a meter equals (10-9m)
How much can the unaided eye see? - Correct answer 200 Micrometers
, What are the 3 main principles of Microscopy? - Correct answer Magnification,
resolution, Contrast
What is Magnification? - Correct answer Increase in size of an object
When does magnification occur? - Correct answer When radiation (light within the
electromagnetic spectrum) bends as it passes through a lens.
What is light refraction? - Correct answer When lights bends as it passes through a
lens or glass
process of light refraction - Correct answer 1. lens takes the light-beam
2. centers the light on focal point
3. span outward and invert
What type of wavelengths increase resolving power? - Correct answer Shorter
