Bio 250 Exam 1 (Microbiology) UPDATED ACTUAL Exam Questions and CORRECT Answers

Bio 250 Exam 1 (Microbiology) UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Microbiology - CORRECT ANSWER - The study of microorganisms


Microscopic, single cell , cluster, chains carry out life processes dependently or independently? -
CORRECT ANSWER - Carry out life processes INDEPENDENTLY as SINGLE CELLS



What are Viruses? - CORRECT ANSWER - 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? - CORRECT ANSWER - 1. Basic - cellular processes


2. Applied - practical problems in agriculture,
health and history


what are the 5 types of microorganisms? - CORRECT ANSWER - 1. bacteria
2. fungi
3. Protozoa
4. Algae
5. Viruses


what are bacteria? - CORRECT ANSWER - SINGLE CELLED ORGANISMS
- - prokaryotic
- - no nucleus

,bacteria are prokaryotic, what does this mean? - CORRECT ANSWER - they have no
membrane bound organelles and no true nucleus


what are the three shapes of bacteria? - CORRECT ANSWER - 1. spherical
2. rod
3. spiral


what is an example of a bacteria (from book)? - CORRECT ANSWER - Klebsiella
Pneumoniae
- rod shaped
- causes pneumonia


What are algae - CORRECT ANSWER - single celled microorganisms



Are algae eukaryotic or prokaryotic? - CORRECT ANSWER - Eukaryotic



T/F: algae have membrane bound organelles and a nucleus - CORRECT ANSWER - True
- Algae are eukaryotes


T/F: Algae are photosynthetic? - CORRECT ANSWER - True



Where do algae live? - CORRECT ANSWER - Fresh water and marine environments



T/F: algae cause diseases in humans - CORRECT ANSWER - False
- ALGAE DO NOT CAUSE DISEASES IN HUMANS


What is an example of an algae (from book) - CORRECT ANSWER - Micrasteria
- green algae found in FRESHWATER

,what are Fungi? - CORRECT ANSWER - single celled microorganisms (yeasts)
multicelluslar microorganisms (Molds)


what are single celled fungi called - CORRECT ANSWER - yeasts



what are multicelled fungi called - CORRECT ANSWER - molds



Are fungi prokaryotic or eukaryotic? - CORRECT ANSWER - Eukaryotic



where are fungi found? - CORRECT ANSWER - widely distributed in water and soil as
decomposers of dead organisms


which microorganism is important for medicine? - CORRECT ANSWER - Fungi



what is an example of a fungus? (from the book) - CORRECT ANSWER - philobolus
Crystallinus


what are viruses? - CORRECT ANSWER - acellular entities too small to be seen with a
light microscope


what are viruses composed of? - CORRECT ANSWER - nucleic acids and proteins



T/F: viruses are cell types - CORRECT ANSWER - False
they are acellular


what is a bacteriophage? - CORRECT ANSWER - viruses that infect bacteria

, T/F: a virus can contain both RNA and DNA - CORRECT ANSWER - False
a virus can only contain DNA or RNA, not both


what is a viroid - CORRECT ANSWER - nucleic acid without protein coating



what are prions? - CORRECT ANSWER - infectious proteinacceous particles
- cause mad cow disease


what is an example of a virus (from the book) - CORRECT ANSWER - bacteriophage
- virus that infect bacteria


what is protozoa ? - CORRECT ANSWER - single (protozoan)
- single-celled microorganism


t/F: protozoa are eukaryotic - CORRECT ANSWER - true


T/F: protozoa DO NOT have a nucleus and DO NOT have membrane bound organelles -
CORRECT ANSWER - False:
- protozoans do have a nucleus and have membrane bound organelles because they are
eukaryotes


where are protozoans found - CORRECT ANSWER - a variety of water and soil
environments


what is an example of a protozoa? - CORRECT ANSWER - amoeba



plague is caused by what - CORRECT ANSWER - bacteria