Populations and Ecosystems
Macromolecules
Cycles of Matter
Ecology
Human Impact
100
What is the smallest unit of life?
cell
100
________ are proteins that act as biological catalysts.
Enzymes
100
According to the law of conservation of matter: matter cannot be created or destroyed. In a tropic pyramid, what happens to the energy if it is not given to the next organism?
It is lost as heat
100
As you move up the trophic levels, what % of energy goes to the next organism?
10%
100
True or False: Human impact is the #1 leading factor to habitat loss and loss of biodiversity
True
200
You are testing the rate of plant growth over a couple days using 3 plants of the same species. You do this by changing the amount of water you give each plant. The amount of sunlight stays the same. What are the independent and dependent variables?
Independent- amount of water
Dependent- plant growth
200
What is the function for carbohydrates?
What is the function of lipids?
(100 points each)
carbs- short term energy
lipids- long term energy
200
Provide an example about how the human body maintains homeostasis?
ex. temperature, regulating pH, regulating blood sugar levels
200
An energy pyramid containing autotrophs and other organisms from a food chain is represented to the right. Where would herbivores most likely be located?
level 2 only
200
Provide 1 example of a renewable resource
Provide 1 example of a nonrenewable resource
renewable: wind, sun, geothermal, hydroelectric power, biomass
nonrenewable: coal, gas, fossil fuels
300
In a certain ecosystem, rattlesnakes are predators of prairie dogs. If the prairie dog population started to increase, how would the ecosystem most likely regain stability?
The rattlesnake population would increase
300
What are the building blocks of protein?
amino acids
300
What is the role of decomposers in the carbon cycle?
break down dead organic material and release carbon back into the atmosphere
300
Think back to the characteristics of life. Name at least 3 things an organism needs to be considered a living organism (MR. GOSEA) (100 points each)
Maintain Homeostasis, Reproduce, Grow, Organization, Stimulus (respond to), Energy (use it…Cellular Respiration), Adapt and evolve
300
Due to human impact, name a reason as to why humans contribute to more greenhouse gases in the atmosphere?
ex. burning fossil fuels, driving cars, industrialization, etc.
400
mouse, rabbit, deer
400
What is an example of a polysaccharide?
starch, cellulose, glycogen
400
Use the diagram to answer the question. Based on the molecules that are shown in the boxes, which two processes are involved in the cycling shown in the diagram? 
photosynthesis and cellular respiration
400
What would most likely happen if most of the bacteria and fungi were removed from an ecosystem?
A) Nutrients resulting from decomposition would be reduced.
B) Energy provided for autotrophic nutrition would be reduced.
C) The rate of mutations in plants would increase.
D) Soil fertility would increase.
A) Nutrients resulting from decomposition would be reduced.
400
Humans use fertilizers that contain high amounts of nitrogen. After it rains, the water flows into a pond. What would be a concern for the organisms living in the pond?
Algal blooms (the algae get excess nutrients but take it from other organisms)
500
Draw a graph that represents the population of an organism going through logistical growth after a couple years
*graph should grow and level out*
500
What 3 elements make up glucose?
Carbon, hydrogen, oxygen
C6H12O6
500
_______________ by bacteria converts nitrates from the ground back into the atmosphere as Nitrogen
denitrification
500
The build-up of higher and higher amounts of chemicals like DDT through the food chain is called
biomagnification
500
What activity MOST contributes to the depletion of the ozone layer?
A. release of CFC's
B. burning fossil fuels
C.deforestation
D. overuse of fertilizers
A. release of CFC's