Question

name
directions: read each question carefully, and record your answers at the bottom of the paper. you may use your notes from your binder, but no phones, laptops, or any other electronic device may be used.
question 1: students obtained information about the composition and amount of energy content on different foods. the graph and table below show the information they found.
food energy
develop an argument for how the evidence provided in the graph and table supports the best food choice that would provide the most energy based on the structure of its macromolecules.
a. pretzels are very high in carbohydrates which are easily digested and release energy.
b. pecans have a larger percentage of lipids which are easily digested and release energy.
c. almonds are higher in proteins which are complex molecules and contain more energy.
d. chips have the highest combination of lipids and carbohydrates and provide more energy.
question 2: the diagram below shows a simple food web. which animal is classified as an omnivore?
a. red fox
b. deer
c. black bear
d. rabbit
question 3: a student wants to investigate a plant leaf under a microscope. the student prepares a wet mount slide of the leaf sample using distilled water. the student then adds a drop of 9% saline solution to the slide and sees that the cells in the leaf sample appear to shrivel up. the student concludes that this occurs because the solution is hypotonic.
a. the students conclusion is correct because water flowed into the cells, meaning the solution is hypotonic.
b. the students conclusion is incorrect because water flowed into the cells, meaning the solution is hypertonic.
c. the students conclusion is correct because water flowed out of the cells, meaning the solution is hypotonic.
d. the students conclusion is incorrect because water flowed out of the cells, meaning the solution is hypertonic.
question 4: in the past 100 years, levels of atmospheric carbon dioxide have increased as a result of the burning of fossil fuels. other processes in the carbon cycle have absorbed some of the carbon released by this combustion. which of the following most likely have absorbed excess carbon released by combustion?
a. animals
b. glaciers
c. plants
d. rocks
record answers here

Explanation:

Step1: Analyze macromolecules and energy

Lipids have high - energy content per gram. Pecans have 78% lipids, so they likely provide a lot of energy.

Step2: Identify omnivore in food - web

Black bear eats both plants and animals, so it is an omnivore.

Step3: Evaluate tonicity conclusion

Water flowing out of cells in 9% saline means it is hypertonic, so student's conclusion is wrong.

Step4: Consider carbon - cycle absorbers

Plants absorb carbon dioxide during photosynthesis.

Answer:

1. C. Pecans have a larger percentage of lipids which are easily digested and release energy.
2. C. black bear
3. D. The student’s conclusion is incorrect because water flowed out of the cells, meaning the solution is hypertonic.
4. D. plants