1. 1) By which process is the potential energy of
organic molecules transferred to a form of
energy that is usable by the cells?
1) digestion
2 ) hydrolysis
3) photosynthesis
4) respiration

3. Which of the following is a producer-consumer
relationship?
foxes eat rabbits
people eat mushrooms
frogs eat flies
rabbits eat grass

4. 4) The biotic component of an ecosystem is
a community.
b. water.
b. the temperature.
c. the climate.

5. Key piece of information
The solution in each flask would be blue after a few hours

6. Decomposers are found in the ground and they break down dead animals and plant
2 and 4 are both in the atmosphere
3 is the answer

7. The x represents nitrogen
Nitrogen is one of the most important elements to life on Earth!!!
DNA and all other proteins are comprised of NITROGEN!!!

8. The arrow points from what is eaten to what does the eating
Whatever the tadpole EATS will increase if the tadpole decreases
Tadpole eats Algae so the answer is d
If the tadpoles aren’t there to eat the algae it will continue to grow

9. Follow the arrows!
The arrow shows NITRATES > plants
3 is correct- the arrow shows nitrates going to the plants- we KNOW that plants need nitrogen for protein synthesis

10. The answer is a
By definition- organic molecules have carbon
Photosynthesis carbon is found in the form of carbon dioxide (gas)

11. The answer is b because at each level energy is lost- secondary consumer level will have less energy than primary and more than tertiary consumers

12. The answer is 1- biomass is a measure of biological (life) available energy
As biomass is consumed (eaten) some of the energy is used for life processes

13. Absorption = taking in
Precipitation= rain/snow
Runoff= excess water running over the soil
Transpiration is gassing off of water
INFILTRATION- water taken in

14. All arrows point to the mushroom!
All life eventually is broken down by the decomposers

15. Plants are producers
Bugs, mice are primary consumers
Secondary consumers are coyote and the birds
There are no decomposers!!!

16. Carbon cycle
Producers incorporate chemicals from the nonliving environment into organic compounds.
Consumers feed on the producers, incorporating some of the chemicals into their own bodies and releasing some back to the environment in waste products.
As organisms die, decomposers break them down, further supplying the soil, water, and air with chemicals in inorganic form. The producers gain a renewed supply of raw materials for building organic matter, and the cycles continue.

17. At point Y carbon is in the atmosphere- in the atmosphere carbon is in a gas form: Carbon dioxide
Not B- not solid
Not A- not a protein
It is a carbohydrate at point C- where the cow is eating it!
Answer is D

18. Trees take in carbon Dioxide during photosynthesis
The answer is B
None of the other answers have anything to do with gas uptake!

19. Whatever is in the food is passed on
The answer is B- material found in proteins of food is absorbed into the body and not removed in waste

20. Follow the arrow-glucose is being made into ATP
Photosynthesis makes sugar
Dehydration is the removal of water
Aerobic respiration = cellular respiration- which makes ATP from glucose the answer is 4
The answer is B