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Science exam T. 12
science exam review chapter 12
Question | Answer |
---|---|
What happens when bacteria reproduces by binary fusion | one cell produces two cells |
A way to prevent viral infections is through... | vaccinations |
True or False: Bacteria change oxygen into nitrogen | False |
What organisms can live where nothing else lives? | Archaea |
All bacteria have how many cells? | one cell |
Which of the following is NOT a shape of bacteria: Crystal Spirilla Cocci Bacilli | Crystal |
Which of the following is NOT a shape of viruses? crystal spirilla sphere cylinder | Spirilla |
True or False: They do not live on their own. | True |
Why are viruses hard to fight? | Viruses are large and change slowly |
What is one way bacteria help the environment? | The change nitrogen to a form plants can use |
What type of medicine is used to kill bacteria? | antibiotic |
What is an example of bioremediation? | Using microorganisms to clean up an oil spill. |
What is an example of genetic engineering? | adding nitrogen-fixing bacteria to the soil before planting crops. |
Where do viruses reproduce? | inside a host cell |
Bacteria that make their own food are... | producers |
Bacteria that break down dead organisms are... | decomposers |
An organisms with no nucleus is a... | prokaryote |
An organism that invades a cell and uses it to create more organisms is a... | virus |
Bacteria that causes disease are... | pathogenic bacteria |
The use of bacteria to change harmful chemicals to harmless ones is... | bioremediation |
What process splits one single-celled organism into two single-celled organisms? | binary fission |
A cell with a nucleus is a... | eukaryote |
Archaea that live in ocean vents and hot springs are... | heat lovers |
Archaea that live in swamps and animal intestines are... | salt lovers |
Bacteria that eat other organisms or live in or on the body of another organism are... | consumers |
In what process do bacteria change nitrogen into a form plants can use? | nitrogen fixation |
What are bacteria that cause disease? | pathogenic bacteria |
How have scientists made certain plants resistant to disease-causing bacteria? | by genetic engineering |
What keeps people from getting many bacterial disease? | vaccination |
Spherical-shaped bacteria are... | cocci |
Rod-shaped bacteria are... | bacilli |
Spiral-shaped bacteria are... | spirilla |