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WorksheetsBacteria & Viruses
Total questions: 30
Worksheet time: 22mins
True or False? Food poisoning is one way that bacteria are harmful.
True
False
True of False: Bacteria (both archaebactria and eubacteria) are one-celled organisms, without a nucleus inside their cell.
True
False
What type of bacteria is pictured?
coccus
spirilium
bacillus
What type of bacteria is pictured?
spirillium
coccus
bacillus
What type of bacteria is pictured?
spirillium
bacillus
coccus
Bacteria are prokaryotes, meaning they ________.
lack a nucleus
are very large
contain no DNA
have a cytoplasm
What is the whip-like 'tail' that bacteria use for movement?
Cell wall
Ribosome
Flagella
Cytoplasm
The German physician Robert Koch provided evidence to support the germ theory of infectious disease. Koch isolated bacteria from a cow with anthrax, then injected the bacteria into a healthy mouse. To support germ theory, what must have happened to the healthy mouse?
It produced antibiotics
It became immune to viral infections
It spread smallpox
It became sick
Health practices today include teaching sanitation, the safe handling of food and water, aseptic techniques, and the development of vaccinations. These examples show that people have accepted the principals of which theory?
The Theory of Evolution
Cell Theory
The Theory of Spontaneous Generation
Germ Theory
The germ theory of disease states that infectious diseases are caused by -
heredity
microorganisms
chemicals
toxins
Observe the diagram of the two viruses.
Part C is the ______________
Genetic material
Capsid
Ligand
Envelope
Observe the diagram of the two viruses.
Part B is the ______________
Genetic material
Capsid
Ligand
Envelope
The viruses genetic material (DNA) starts to take over the functions of the cell
The host cell bursts open, releasing the new viruses
The virus injects its genetic material into the cell
A virus attaches to the surface of a host cell
Which viruses show symptoms right away (hours-days)? Viruses that go through the....
lytic cycle
lysogenic cycle
During which cycle does a virus's genetic information become a part of the host cell's genetic information?
Lytic
Lysogenic
A virus that hides within the host cell for up to years is going through the _______ cycle.
Lytic
Lysogenic
Vaccines are a preventative measure.
True
False
