Bio 250 Exam 1 (Microbiology)
Questions and Answers 100% Pass
Microbiology - ✔✔The study of microorganisms
Microscopic, single cell , cluster, chains carry out life processes dependently or independently? -
✔✔Carry out life processes INDEPENDENTLY as SINGLE CELLS
What are Viruses? - ✔✔microscopic, non-cellular, RNA or DNA
Bacterial and their processes and their effects on society, humans, animals, and the environment
what are the two basic themes? - ✔✔1. Basic - cellular processes
2. Applied - practical problems in agriculture,
health and history
what are the 5 types of microorganisms? - ✔✔1. bacteria
2. fungi
3. Protozoa
4. Algae
5. Viruses
Author: Katelyn Whitman. ©2025, All Rights Reserved.
, 2|Page
what are bacteria? - ✔✔SINGLE CELLED ORGANISMS
- - prokaryotic
- - no nucleus
bacteria are prokaryotic, what does this mean? - ✔✔they have no membrane bound organelles and no
true nucleus
what are the three shapes of bacteria? - ✔✔1. spherical
2. rod
3. spiral
what is an example of a bacteria (from book)? - ✔✔Klebsiella Pneumoniae
- rod shaped
- causes pneumonia
What are algae - ✔✔single celled microorganisms
Are algae eukaryotic or prokaryotic? - ✔✔Eukaryotic
T/F: algae have membrane bound organelles and a nucleus - ✔✔True
- Algae are eukaryotes
T/F: Algae are photosynthetic? - ✔✔True
Where do algae live? - ✔✔Fresh water and marine environments
T/F: algae cause diseases in humans - ✔✔False
- ALGAE DO NOT CAUSE DISEASES IN HUMANS
Author: Katelyn Whitman. ©2025, All Rights Reserved.
, 3|Page
What is an example of an algae (from book) - ✔✔Micrasteria
- green algae found in FRESHWATER
what are Fungi? - ✔✔single celled microorganisms (yeasts)
multicelluslar microorganisms (Molds)
what are single celled fungi called - ✔✔yeasts
what are multicelled fungi called - ✔✔molds
Are fungi prokaryotic or eukaryotic? - ✔✔Eukaryotic
where are fungi found? - ✔✔widely distributed in water and soil as decomposers of dead organisms
which microorganism is important for medicine? - ✔✔Fungi
what is an example of a fungus? (from the book) - ✔✔philobolus Crystallinus
what are viruses? - ✔✔acellular entities too small to be seen with a light microscope
what are viruses composed of? - ✔✔nucleic acids and proteins
T/F: viruses are cell types - ✔✔False
they are acellular
what is a bacteriophage? - ✔✔viruses that infect bacteria
T/F: a virus can contain both RNA and DNA - ✔✔False
a virus can only contain DNA or RNA, not both
what is a viroid - ✔✔nucleic acid without protein coating
what are prions? - ✔✔infectious proteinacceous particles
Author: Katelyn Whitman. ©2025, All Rights Reserved.
, 4|Page
- cause mad cow disease
what is an example of a virus (from the book) - ✔✔bacteriophage
- virus that infect bacteria
what is protozoa ? - ✔✔single (protozoan)
- single-celled microorganism
t/F: protozoa are eukaryotic - ✔✔true
T/F: protozoa DO NOT have a nucleus and DO NOT have membrane bound organelles - ✔✔False:
- protozoans do have a nucleus and have membrane bound organelles because they are eukaryotes
where are protozoans found - ✔✔a variety of water and soil environments
what is an example of a protozoa? - ✔✔amoeba
plague is caused by what - ✔✔bacteria
typhoid fever is caused by what? - ✔✔bacteria
hepaitis is caused by what? - ✔✔virus
measles, mumps, small pox caused by what - ✔✔virus
varicella morbidity is caused by what? - ✔✔virus
yellow fever is caused by what - ✔✔virus
what is the ONE fungal disease? - ✔✔Coccidiodomycosis
what are the 5 protozoan diseases? - ✔✔1. babesiosis
2. cryptosporidisosis
Author: Katelyn Whitman. ©2025, All Rights Reserved.