38 Questions
What term describes the set of environmental conditions in which a species of microbe can replicate?
Niche
Which type of microbe grows in the presence of oxygen, but can also survive without it?
Facultative anaerobe
What is the term for microbes that grow in temperatures between 0-20 degrees Celsius?
Psychrophile
What is the primary function of the plasma membrane in prokaryotes?
Respiratory chain and transport systems
Which type of microbe lacks or has very low quantities of superoxide dismutase and catalase?
Strict anaerobe
What is the method used to monitor the cell number in a bacterial culture?
Optical density measurement
What is the term for microbes that grow in environments with high temperatures and pressure?
Deep sea hydrothermal vent
What is the characteristic feature of cyanobacteria?
Only photosynthetic prokaryotes that produce oxygen
Which type of microbe forms a mutualistic relationship with leguminous plants?
Rhizobium
What is the function of the 70S ribosomes in prokaryotes?
Protein synthesis
What is the term for microbes that grow in environments with a wide range of metabolic capabilities?
Free-living
What is the method used to determine the number of viable cells in a bacterial culture?
Viable counting method
Which type of microbe interacts with its host organism, but the host is unaffected?
Commensal
What is the term for organisms that use carbon dioxide as their carbon source?
Autotrophs
What is the energy source for phototrophs?
Sunlight
What is the term for microbes that grow in environments with temperatures between 55-85 degrees Celsius?
Thermophiles
What is the characteristic of prokaryotic reproduction?
Asexual reproduction
Which type of microbe forms a mutualistic relationship with the Hawaiian bobtail squid?
Vibrio fischeri
What is the location of enzymes in prokaryotes?
Cell membrane and cytoplasm
In which part of the prokaryotic cell are the transport systems involved in the movement of solutes across the cell membrane located?
Cell membrane
What is the primary function of the respiratory chain in the plasma membrane of prokaryotes?
Energy generation
Which type of ribosomes are found in prokaryotes?
70S ribosomes
What is the characteristic of autotrophs in terms of their carbon source?
They use carbon dioxide to make carbon compounds
Which type of prokaryotes are the only photosynthetic prokaryotes that produce oxygen?
Cyanobacteria
What is the method used to measure the cell density of a bacterial culture?
Spectrophotometry
What is the characteristic feature of binary fission in prokaryotes?
It is a type of asexual reproduction
What is the energy source for chemotrophs?
Chemicals
In which part of the prokaryotic cell are the enzymes involved in diverse metabolism located?
Cell membrane and cytoplasm
What is the range of oxygen concentration that microaerophiles require?
2-10%
What is the term for microbes that grow in environments with temperatures between 20-45 degrees Celsius?
Mesophile
What is the characteristic feature of strict anaerobes?
They lack or have very low quantities of superoxide dismutase and catalase
What type of microbe forms a mutualistic relationship with the Hawaiian bobtail squid?
Vibrio fischeri
What is the term for microbes that grow in environments with high temperatures and high pressure?
Barophiles
What is the term for the set of environmental conditions in which a species of microbe can replicate?
Niche
What type of microbe grows in environments with temperatures between 0-20 degrees Celsius?
Psychrophile
What is the term for microbes that grow in environments with temperatures between 55-85 degrees Celsius?
Thermophile
What type of microbe grows in environments with a wide range of metabolic capabilities?
Free-living
What is the term for microbes that grow in environments with low water activity?
Xerotolerant
Test your knowledge on prokaryotes, including characteristics such as the absence of a defined nucleus and membrane-bound organelles, and their unique metabolic processes and reproductive methods. Learn about binary fission and measuring cell numbers through optical density.
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