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Question 1

When animals breathe, they release carbon dioxide into the air. Which of the following is an example of an organism that uses carbon dioxide to make its own food?

Church Ranches Homeowners Association - Mosquito Abatement

a
mouse
b
mushroom
c
maple tree
d
mosquito
Question 2
A timeline of important discoveries about DNA is shown below. These discoveries have contributed to our current knowledge about DNA.

Image

Which statement best summarizes the development of knowledge about DNA over time?

a
Scientists gained more knowledge about DNA as new evidence became available.
b
Ideas about DNA have remained unchanged over time.
c
Changes in ideas about DNA are based on opinion.
d
Past knowledge about DNA was discarded as each new discovery was made.
Question 3
A DNA strand that has the bases CTA GGT, has a complimentary strand with the bases ________.

a
AGC TTG
b
GAT CCA
c
GAU CCA
d
TCG AAC
Question 4
Within the ecosystem there are producers, consumers, and decomposers. Which are found at the bottom of the energy pyramid?

a
producers
b
consumers
c
decomposers and producers
d
decomposers and consumers
Question 5
Directions: The table below shows several organisms and their food sources. Use the table to answer any questions that follow.

Organism Food Source
Wolf Beavers and moose
Moose Trees (leaves)
Beaver Trees (bark)
Earthworm Organic matter
Tree Makes its own food
Which of the following would most likely happen if the moose disappeared?

a
The number of wolves would increase, as they would no longer compete with moose for food resources.
b
The number of earthworms would decline as the amount of available organic matter would decrease.
c
The number of beavers would decline as they became the wolves' primary food source.
d
The number of trees would decline, as moose would no longer fertilize them.
Question 6

Select one of the following issues as the cause of most other environmental impacts caused by humans?


a
Pollution
b
Reducing, recycling and reuse of resources
c
Human population growth
d
Habitat destruction
Question 7


a
In soil uplifting and sea spray
b
By eating plants and animals
c
Via evaporation in the atmospheric phase
d
Through waste elimination and death and decomposition
Question 8

a
Gravity
b
Earth's magnetic field
c
Sunlight
d
Wind
Question 9
Which of the following biogeochemical cycles does not have an atmospheric phase?

a
Nitrogen cycle
b
Sulfur cycle
c
Water (hydrologic) cycle
d
Carbon cycle
e
Phosphorous cycle
Question 10
Directions: The diagram below models part of the phosphorus cycle. Use the diagram to answer any questions that follow.

How is phosphorus transferred between soil and animals in box M?

a
Animals use the phosphorus in the soil for key nutrients
b
Plants cannot use the phosphorus in the soil, so they die, and the phosphorus goes back into the soil
c
Plants use the phosphorus in the soil to grow and animals eat the plants to get the phosphorus
d
Consumers in the soil exhale phosphorus as a gas that is absorbed through the leaves of plants

1 answer

Here are the answers to your questions:

Question 1:
Which of the following is an example of an organism that uses carbon dioxide to make its own food?
Answer: c) maple tree (Maple trees are plants, and they undergo photosynthesis, which involves using carbon dioxide to produce their food.)

Question 2:
Which statement best summarizes the development of knowledge about DNA over time?
Answer: a) Scientists gained more knowledge about DNA as new evidence became available.

Question 3:
A DNA strand that has the bases CTA GGT has a complementary strand with the bases ________.
Answer: b) GAT CCA (The complementary bases pair as follows: C-G, T-A, A-T, G-C.)

Question 4:
Which are found at the bottom of the energy pyramid?
Answer: a) producers (Producers are at the bottom of the energy pyramid as they create energy through photosynthesis.)

Question 5:
Which of the following would most likely happen if the moose disappeared?
Answer: c) The number of beavers would decline as they became the wolves' primary food source. (With fewer moose available, wolves would turn to other food sources like beavers, potentially leading to a decline in beaver populations.)

Question 6:
Select one of the following issues as the cause of most other environmental impacts caused by humans?
Answer: c) Human population growth (Human population growth is often considered a primary driver of many environmental issues, including habitat destruction and pollution.)

Question 7:
How is nitrogen transferred through various means?
Answer: d) Through waste elimination and death and decomposition (Nitrogen is cycled through ecosystems via waste and decomposition processes.)

Question 8:
Which of the following is not a driver for nutrient cycling?
Answer: c) Sunlight (Sunlight provides energy for photosynthesis but is not a direct driver in the nutrient cycling process itself.)

Question 9:
Which of the following biogeochemical cycles does not have an atmospheric phase?
Answer: e) Phosphorous cycle (The phosphorous cycle does not include a significant atmospheric phase like the others do.)

Question 10:
How is phosphorus transferred between soil and animals in box M?
Answer: c) Plants use the phosphorus in the soil to grow and animals eat the plants to get the phosphorus.

Feel free to ask if you have more questions!