Show:
Bacteria
Bacteria
Viruses
Viruses
Bacteria and Viruses
100
What organism can live where nothing else can live?
Archaebacteria
100
What are the three shapes of bacteria?
Cocci, bacilli, spirilla
100
The genetic material of the virus is inactive within the host cell during which process?
The lysogenic cycle
100
How can we prevent viral infections?
Vaccinations
100
What are bacteria that break down dead organisms?
Decomposers
200
What is the process by which bacteria change nitrogen into a form plants can use?
nitrogen fixation
200
What are disease-causing bacteria called?
Pathogenic bacteria
200
How do viruses reproduce? (2 answers)
The lytic cycle or the lysogenic cycle
200
What do viruses need in order to reproduce?
Host cell
200
What are bacteria that make their own food called?
Producers
300
What is a thick-walled protective spore that contains genetic material and proteins?
Endospore
300
Bacteria have how many cells?
One
300
What are the shapes of viruses?
Crystals, spacecraft
300
What is the type of medicine that keeps viruses from reproducing?
Antiviral
300
How are prokaryotes different from eukaryotes?
Prokaryotes do NOT have a nucleus, they are smaller and simpler than eukaryotes, and they reproduce in a different way from eukaryotes.
400
What is one way bacteria help the environment?
Bacteria recycle dead animals and plants.
400
How many cells are produced through binary fission in bacteria?
Two cells are produced from one cell.
400
What is the substance that protects a virus's genetic material and helps it get inside a cell?
Protein coat
400
What is the medicine that treats bacterial diseases but has no effect on viruses?
Antibiotics
400
Tell whether you would prefer to work with helpful or harmful bacteria. Explain why.
Helpful bacteria: clean up oil spills or other pollution; Harmful bacteria: find ways to kill pathogenic bacteria and cure diseases.
500
What is the use of bacteria to change harmful chemicals into harmless ones? Give an example.
Bioremediation. It can be used to clean up oil spills.
500
What is the most common kind of bacteria? What is the bacteria that contains the green pigment chlorophyll?
Eubacteria. Cynobacteria.
500
How are viruses like living things?
Viruses contain protein and genetic material.
500
How are viruses unlike living things?
Viruses do not eat, grow, break down food, or use oxygen.
500
What technological advances have triggered the spread of viruses? How?
Advances in transportation have triggered the spread of viruses. Airplanes, trains, and cars have allowed viruses to travel in their human hosts, allowing the viruses to spread to new locations around the world.