Microbiology Exam 2 (Chapter 2, 5, 6, 7)
with 108 complete solutions.
Microbiology Exam 2 (Chapter 2, 5, 6, 7)
with 108 complete solutions.
List the 4 eukaryotic microorganisms. - ANSWER Algae
Fungi
Helminth
Protozoa
commensal associations - ANSWER (Symbiotic)
The commensal benefits
Other member is not harmed
What are the two groups of Fungi? - ANSWER 1. Macroscopic
(mushrooms, puffballs)
2. Microscopic
(mold/yeast)
Morphologies of microscopic fungi - ANSWER 1. Yeast-
round, asexual reproduction
2. Hyphae- long filamentous fungi or molds
Dimorphic fungi are pathogens
What do fungi eat? - ANSWER plant and animal tissue
What is the difference between a saprobe and a parasite?
,Microbiology Exam 2 (Chapter 2, 5, 6, 7)
with 108 complete solutions.
(types of fungi) - ANSWER Saprobe live off dead plants and animals, parasites live off tissues of other
organisms (not obligate)
What are important roles of fungi? - ANSWER Mycoses, allergies, toxin production, crop and food
storage destruction, decompose dead plants/animals, source of antibiotics/alcohol/vitamins
Mycoses - ANSWER diseases caused by fungi
major characteristics of algae - ANSWER Photosynthetic (chloroplasts), may/may not have flagella,
unicellular or multicellular
Why are algae important - ANSWER Basis of food web, used for cosmetics, food and medical products
How does algae sicken people? - ANSWER Exposure to algal toxins through swimming, breathing in
aerosols, or consuming contaminated water/ fish
main characteristics of protozoa - ANSWER Unicellular
Complex internal structures
non-photosynthetic
most have locomotor structures feed by engulfing other microbes and organic matter
What are 2 stages in the life cycle of protozoa? - ANSWER 1. Trophozoite (motile feeding)
2.. Cyst (dormant resting, conditions unfavorable for growth/feeding)
Protozoan modes of reproduction - ANSWER Sexually (conjugation) or asexually
Protozoan pathogens - ANSWER Malaria,
Giardia,
Amoeba,
, Microbiology Exam 2 (Chapter 2, 5, 6, 7)
with 108 complete solutions.
Trichomonas
Main Characteristics of Helminths - ANSWER Parasitic worms
Multi-cellular with elongated flat or round body
Develop through stages (egg, larval, adult)
Able to reproduce
May be hermaphrodites or sexually differentiated
Helminth parasites - ANSWER Pinworm
hookworm
tapeworm
fluke
Describe the unique characteristics of viruses. - ANSWER -Most abundant microbes on earth.
-Non-cellular.
-Made of the same 4 macromolecules as cells
-Contain only the parts needed to invade and control a host cell
-must be viewed with electron microscope
Properties of viruses (Table 6.1) - ANSWER -Parasites of any other eukaryote
-ultra-microscopic (20-450 nm)
-compact, economical structure
-non-cellular
-does not independently fulfill definition of life
-active only inside host cell
-Basic structure= capsid (protein shell) surrounding nucleic acid core
-genome is either DNA or RNA, not both
with 108 complete solutions.
Microbiology Exam 2 (Chapter 2, 5, 6, 7)
with 108 complete solutions.
List the 4 eukaryotic microorganisms. - ANSWER Algae
Fungi
Helminth
Protozoa
commensal associations - ANSWER (Symbiotic)
The commensal benefits
Other member is not harmed
What are the two groups of Fungi? - ANSWER 1. Macroscopic
(mushrooms, puffballs)
2. Microscopic
(mold/yeast)
Morphologies of microscopic fungi - ANSWER 1. Yeast-
round, asexual reproduction
2. Hyphae- long filamentous fungi or molds
Dimorphic fungi are pathogens
What do fungi eat? - ANSWER plant and animal tissue
What is the difference between a saprobe and a parasite?
,Microbiology Exam 2 (Chapter 2, 5, 6, 7)
with 108 complete solutions.
(types of fungi) - ANSWER Saprobe live off dead plants and animals, parasites live off tissues of other
organisms (not obligate)
What are important roles of fungi? - ANSWER Mycoses, allergies, toxin production, crop and food
storage destruction, decompose dead plants/animals, source of antibiotics/alcohol/vitamins
Mycoses - ANSWER diseases caused by fungi
major characteristics of algae - ANSWER Photosynthetic (chloroplasts), may/may not have flagella,
unicellular or multicellular
Why are algae important - ANSWER Basis of food web, used for cosmetics, food and medical products
How does algae sicken people? - ANSWER Exposure to algal toxins through swimming, breathing in
aerosols, or consuming contaminated water/ fish
main characteristics of protozoa - ANSWER Unicellular
Complex internal structures
non-photosynthetic
most have locomotor structures feed by engulfing other microbes and organic matter
What are 2 stages in the life cycle of protozoa? - ANSWER 1. Trophozoite (motile feeding)
2.. Cyst (dormant resting, conditions unfavorable for growth/feeding)
Protozoan modes of reproduction - ANSWER Sexually (conjugation) or asexually
Protozoan pathogens - ANSWER Malaria,
Giardia,
Amoeba,
, Microbiology Exam 2 (Chapter 2, 5, 6, 7)
with 108 complete solutions.
Trichomonas
Main Characteristics of Helminths - ANSWER Parasitic worms
Multi-cellular with elongated flat or round body
Develop through stages (egg, larval, adult)
Able to reproduce
May be hermaphrodites or sexually differentiated
Helminth parasites - ANSWER Pinworm
hookworm
tapeworm
fluke
Describe the unique characteristics of viruses. - ANSWER -Most abundant microbes on earth.
-Non-cellular.
-Made of the same 4 macromolecules as cells
-Contain only the parts needed to invade and control a host cell
-must be viewed with electron microscope
Properties of viruses (Table 6.1) - ANSWER -Parasites of any other eukaryote
-ultra-microscopic (20-450 nm)
-compact, economical structure
-non-cellular
-does not independently fulfill definition of life
-active only inside host cell
-Basic structure= capsid (protein shell) surrounding nucleic acid core
-genome is either DNA or RNA, not both
