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BIOL 203 LIBERTY UNIVERSITY EXAM #1 100% PASS
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BIOL 203 LIBERTY UNIVERSITY EXAM #1 100% PASS 2024-2025microorganism - Answer are organisms that cannot be seen by the naked eye
microbes - Answer 1. decomposed in organic waste
2. to produce chemicals (ethanol and acetone)
3. an important role in the ecosystem by photosynthesis (O2 and C6H12O6)
4. to ferment food (cheese, vinegar)
5. production of metabolites use in treatment (insulin)
Linnaens - Answer establish the system of scientific names
each organisms has two names - Answer 1. the genus
2. the specific epithet
specific names - Answer are italicized or underlined: the genus is capitalized and the
specific epithet is lowercase
types of microorganisms - Answer 1. bacteria
2. archaea
3. fungi
4. protozoa
5. algae
6. viruses
7. multicellular animal parasites
,Bacteria - Answer 1. prokaryote (no nucleus)
2. single-celled organisms
3. peptidoglycan cell walls
4. binary fission (2 equal cells)
5. contains carbohydrates and protein complex
bacteria appearance - Answer 1. bacillus (rodlike)
2. coccus (spherical)
3. spiral (curved)
diplo- - Answer two cells
strepto- - Answer a combining form meaning "twisted"
staphylo- - Answer forms in chains
archaea - Answer 1. prokaryotic (no nucleus)
2. lack peptidoglycan
3. live in extreme environments
4. have cell walls
5. not known to cause disease in humans
archaea divided into three main groups - Answer 1. methanogens
2. extreme halophils
3. extreme thermophils
methanogens - Answer 1. produces methane as a waste product from respiration
,2. used in sewage treatment
methane production
extreme halophiles - Answer 1. living in an extremely salty environment
2. great lakes and deep sea
salt loving
extreme thermophiles - Answer 1. live in hot sulfurous water
2. hot springs
heat tolerant
fungi - Answer 1. are eukaryotes organisms (have nucleus)
2. chitlin cell walls
3. use organic chemicals for energy
4. molds and mushrooms are multicellular
5. yeast are unicellular
protozoa - Answer 1. eukaryotes (have nucleus)
2. unicellular
3. absorb or ingest organic chemicals
4. may be motile via pseudopods (false feet), cilia, or flagella
algae - Answer 1. eukaryotes (have nucleus)
2. cell walls contain cellulose (carbohydrates)
, 3. use photosynthesis for energy
4. produces molecular oxygen and organic compounds
viruses - Answer 1. not classified as in kingdom - not living
2. acellular
3. consist of DNA or RNA core
4. coat may be enclosed in a lipid envelope
5. viruses are replicated only when they are in a living host cell
multicellular animal parasite - Answer 1. eukaryotes
2. multicellular animals
3. parasitic flatworms and roundworms are called helminths
4. microscopic stages in life cycles
prokaryotes - Solution 1. unicellular
2. typically lack membrane bound organelles
3. DNA (single)
4. cells divide by binary fission
5. cell walls typically contain peptidoglycan
6. DNA associated with specific proteins
eukaryotes - Solution 1. unicellular or multicellular
2. have many membrane bound organelles
3. DNA (multiple)
4. cells divide by mitosis
5. cell wall contain chemically similar
6. DNA associated with specific proteins
classification of microorganism in three domains - Solution 1. bacteria
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