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Questions and Answers
What is the main difference between viroids and prions?
What is the main difference between viroids and prions?
- Viroids infect animals, while prions infect plants.
- Viroids have a protein coat, while prions lack a protein coat.
- Viroids replicate by triggering abnormal folding, while prions replicate within a nucleus.
- Viroids consist of RNA, while prions consist of proteins. (correct)
How do viroids replicate?
How do viroids replicate?
- By triggering the host cell to replicate them (correct)
- By forming a protective protein coat
- By absorbing genetic material from the host cell
- By creating a nucleus within the host cell
What characterizes the size of viroid genomes?
What characterizes the size of viroid genomes?
- Large single-stranded DNA chains
- Small double-stranded DNA chains
- Large double-stranded RNA circles
- Small single-stranded RNA circles (correct)
What is the role of the cell membrane in a cell?
What is the role of the cell membrane in a cell?
In eukaryotic cells, where is DNA enclosed?
In eukaryotic cells, where is DNA enclosed?
Which component of the cell can be described as the 'command center'?
Which component of the cell can be described as the 'command center'?
How can motility be demonstrated in bacteria?
How can motility be demonstrated in bacteria?
Where do nonmotile organisms grow when stabbed into semisolid agar?
Where do nonmotile organisms grow when stabbed into semisolid agar?
Which type of organisms require an atmosphere with molecular oxygen for growth and multiplication?
Which type of organisms require an atmosphere with molecular oxygen for growth and multiplication?
What percentage of CO2 is typically found in room air?
What percentage of CO2 is typically found in room air?
Which type of organisms grow better in the laboratory in the presence of increased CO2 concentrations?
Which type of organisms grow better in the laboratory in the presence of increased CO2 concentrations?
What are examples of microorganisms that are obligate aerobes?
What are examples of microorganisms that are obligate aerobes?
What is the process of determining whether an isolate belongs to an established taxon called?
What is the process of determining whether an isolate belongs to an established taxon called?
In the binomial nomenclature system, what does the first name represent?
In the binomial nomenclature system, what does the first name represent?
Which scientist developed the binomial system of nomenclature in the 18th century?
Which scientist developed the binomial system of nomenclature in the 18th century?
What is the purpose of arranging organisms into taxonomic groups?
What is the purpose of arranging organisms into taxonomic groups?
What are acceptable terms used for bacterial species other than their scientific names?
What are acceptable terms used for bacterial species other than their scientific names?
What is the term for a single taxonomic group in the classification system?
What is the term for a single taxonomic group in the classification system?
Which type of bacteria do not produce oxygen?
Which type of bacteria do not produce oxygen?
Where does photosynthesis take place in eukaryotic algae and plants?
Where does photosynthesis take place in eukaryotic algae and plants?
What structures in cyanobacteria are thought to be invaginations of the cell membrane?
What structures in cyanobacteria are thought to be invaginations of the cell membrane?
Where does light harvesting occur in cyanobacteria?
Where does light harvesting occur in cyanobacteria?
Which organisms are believed to be the first capable of oxygenic photosynthesis?
Which organisms are believed to be the first capable of oxygenic photosynthesis?
Under what conditions do cyanobacteria tend to overgrow in pond or lake water?
Under what conditions do cyanobacteria tend to overgrow in pond or lake water?
What is the medical significance of Prototheca algae?
What is the medical significance of Prototheca algae?
How can Prototheca algae enter the human body?
How can Prototheca algae enter the human body?
What is the consequence of Prototheca entering the lymphatic system?
What is the consequence of Prototheca entering the lymphatic system?
How are protozoa classified in terms of kingdoms?
How are protozoa classified in terms of kingdoms?
What distinguishes protozoal cells from plant cells?
What distinguishes protozoal cells from plant cells?
Why can't protozoa make their own food by photosynthesis?
Why can't protozoa make their own food by photosynthesis?
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