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- 1. Multiple Choice
How does human development of land effect the carrying capacity in a given area for a species other than humans?
It is unaffected
It increases but then quickly decreases
It is decreased
It is increased
- 2. Multiple Choice
How would an increase in prey affect the carrying capacity of a particular ecosystem?
It would decrease
It would have no effect
It would decrease suddenly and then slowly increase
It would increase
- 3. Multiple Choice
How would a sudden increase in parasites, within a population, affect the population's growth?
The birth rate would increase
The growth rate would continue at a steady pace
The growth rate would be unaffected
The death rate would increase
- 4. Multiple Choice
Which of the following is the most crucial role of fungi in a balanced ecosystem?
They act as autotrophs that turn energy from the sun into glucose and oxygen
They serve as decomposers and recycle nutrients
They serve as tertiary consumers
They serve as primary consumers
- 5. Multiple Choice
Some bacteria benefit mammals by helping with-
growth
defense
digestion
respiration
- 6. Multiple Choice
In what manner do bacteria cause disease?
They damage tissue and release toxins
They cause cracks in the skin, which allows dirt to enter
They generate heat that kills nearby cells
They integrate themselves into the host cell's DNA
- 7. Multiple Choice
Some bacteria benefit mammals by helping with digestion. When a person becomes ill with a bacterial infection a doctor will prescribe antibiotics. Certain antibiotics cause patients to exhibit digestive side effects. These side effects are most often the result of-
bacteria being killed in the digestive tract
the antibiotics being converted into stomach acids
too much water being drawn into the digestive tract
The stomach wall being torn
- 8. Multiple Choice
How do antibiotics work to destroy a bacterial cell?
Antibiotics destroy the nucleus of the bacterial cells
Antibiotics break down the endoplasmic reticulum of bacterial cells
Antibiotics break down the cell wall of the bacterial cell
Antibiotics invade the nucleus of bacterial cells and destroy the DNA
- 9. Multiple Choice
Which response usually occurs after an individual receives a vaccination for influenza virus?
Antigens from the vaccine deactivate the virus
Hormones in the blood inhibit reproduction of the virus
Enzymes released from platelets kill the virus
Antibodies against the virus form in the blood
- 10. Multiple Choice
Pioneer species are species which colonize previously uncolonized land, usually leading to ecological succession. They are the first organisms to start the chain of events leading to a livable biosphere or ecosystem. Why is a lichen most likely to be a pioneer species?
The mutualistic relationship of species forming a lichen allows it to survive independently
The lichen is fast growing and provides a nutritious food source for many other species
The lichen does not require sunlight to survive
The lichen is a decomposer that digests rocks and forms soil
- 11. Multiple Choice
In which of the following areas would secondary succession most likely occur?
A lava flow
An area with a well-balanced, well-established ecosystem
A previously forested area devastated by fire
A rock ledge exposed by the melting of the glacier that covered it
- 12. Multiple Choice
A new farmer purchases a large area of naturally occurring hayfield and immediately begins plowing the land and planting only wheat on the land. His actions will most likely-
have very little effect on the diversity of plant and animal in that field
increased the diversity of plant and animal like in that field
decrease the diversity of plant and animal life in that field
none of the above
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