MCB2010 Exam 1 questions with complete solutions
Microorganisms Correct Answer-organisms that are too small to be seen
with the unaided eye
Microbes in our life Correct Answer--pathogenic (disease-causing)
-organic (carbon-based) (proteins, carbs, DNA)
What do microbes produce? Correct Answer--produce industrial chemicals such as ethanol and acetone
-produce fermented foods such as vinegar, cheese and bread
-produce products in manufacturing (cellulase) and treatment (insulin)
What are the 3 classifications in the ecosystem? Correct Answer-1) producers: plants, photosynthetic bacteria
2) consumers: animals 3) decomposers: bacteria and fungi
What does the knowledge of microorganisms allow humans to do? Correct Answer--prevent food spoilage
-prevent disease occurrence
-led to ascetic techniques to prevent contamination in median and microbiology labs
Ethyl alcohol Correct Answer-sugar -----> alcohol by yeast for fermentation Scientific name for yeast Correct Answer-Saccharomyces cerevisiae
What is the cell wall made up of? Correct Answer-cellulose
What is the enzyme that digests cellulose? Correct Answer-cellulase
Who was the creator of the scientific nomenclature system? Correct Answer-Linnaeus
What are the two names for each organism? Correct Answer-genus and species
Genus Correct Answer-capital letter, underlined or italicized
Species Correct Answer-lower case letter, underlined or italicized
Escherichia coli Correct Answer--honors discoverer (Theodor Escherich)
-describes the bacteria's habitat -the colon
Staphylococcus aureus Correct Answer--describes the clustered (staphylo) -spherical (cocci) cells -describes the gold-colored (aureus) colonies
Bacteria Correct Answer--prokaryotes
-peptidoglycan cell walls
-binary fission
-for energy, use organic chemicals, inorganic chemicals or photosynthesis
Archaea Correct Answer--prokaryotic
-lack peptidoglycan -cell wall is made up of pseudomorein
-live in extreme environments
-include methanogens, extreme halophiles, extreme thermophiles
What are the 3 domains? Correct Answer-1) bacteria
2) archaea
3) eukarya
Fungi Correct Answer--eukaryotes
-chitin cell walls
-heterotrophs (obtain food and energy through other organic chemicals)
-use organic chemicals for energy
Microorganisms Correct Answer-organisms that are too small to be seen
with the unaided eye
Microbes in our life Correct Answer--pathogenic (disease-causing)
-organic (carbon-based) (proteins, carbs, DNA)
What do microbes produce? Correct Answer--produce industrial chemicals such as ethanol and acetone
-produce fermented foods such as vinegar, cheese and bread
-produce products in manufacturing (cellulase) and treatment (insulin)
What are the 3 classifications in the ecosystem? Correct Answer-1) producers: plants, photosynthetic bacteria
2) consumers: animals 3) decomposers: bacteria and fungi
What does the knowledge of microorganisms allow humans to do? Correct Answer--prevent food spoilage
-prevent disease occurrence
-led to ascetic techniques to prevent contamination in median and microbiology labs
Ethyl alcohol Correct Answer-sugar -----> alcohol by yeast for fermentation Scientific name for yeast Correct Answer-Saccharomyces cerevisiae
What is the cell wall made up of? Correct Answer-cellulose
What is the enzyme that digests cellulose? Correct Answer-cellulase
Who was the creator of the scientific nomenclature system? Correct Answer-Linnaeus
What are the two names for each organism? Correct Answer-genus and species
Genus Correct Answer-capital letter, underlined or italicized
Species Correct Answer-lower case letter, underlined or italicized
Escherichia coli Correct Answer--honors discoverer (Theodor Escherich)
-describes the bacteria's habitat -the colon
Staphylococcus aureus Correct Answer--describes the clustered (staphylo) -spherical (cocci) cells -describes the gold-colored (aureus) colonies
Bacteria Correct Answer--prokaryotes
-peptidoglycan cell walls
-binary fission
-for energy, use organic chemicals, inorganic chemicals or photosynthesis
Archaea Correct Answer--prokaryotic
-lack peptidoglycan -cell wall is made up of pseudomorein
-live in extreme environments
-include methanogens, extreme halophiles, extreme thermophiles
What are the 3 domains? Correct Answer-1) bacteria
2) archaea
3) eukarya
Fungi Correct Answer--eukaryotes
-chitin cell walls
-heterotrophs (obtain food and energy through other organic chemicals)
-use organic chemicals for energy
