(a) Define biofuel. (b) Describe three sources of biomass.

Artificial photosynthesis is being researched to provide: a)Plastic shrubbery b)Synthetic fuel c)Permanent leaves d)Synthetic proteins

6) When the chemical bonds of biofuels are broken, they can release large amounts of energy that can be used to power machines. True or False? 7) Where do humans/animals and plants obtain energy from? 8) What are autotrophs/heterotrophs? Are humans autotroph or heterotroph? How about plants? 9) Plants can produce their own food. They can produce sugars which can be used as building blocks to synthesize (manufacture) more complex molecules or cell structures. True or False? 10) Name examples of photosynthetic organisms. 11) Where does photosynthesis happen (which organelles)? 12) Which molecule is implicated in photosynthesis and where is it located? Which of the following wavelengths can this molecule absorb? blue, red, green. 13) Why do we perceive the leaves of a plant 14) Photosynthesis has two parts. Name the events that happen in each of them. green? 15) Plants release oxygen. Does this happen in the "photo" or “synthesis" part of photosynthesis? 16) How are the “photo" and…

Energy from the sun is directly harnessed by _________ A.) producers B.)all organisms C.)consumers which can be _______ by other organisms. A.)consumed B.)decomposed C.)inherited

Which of the following is false concerning the carbon cycle? Decomposers take organic carbon and turn it into inorganic nutrients (phosphorus, sulfur, nitrogen, etc.) Consumers take in organic carbon (food) and convert the waste into carbon dioxide. C) Producers take carbon dioxide and turn it into organic carbon (food). Plants take organic carbon (food) and convert the waste into carbon dioxide.

Which of the following formulas are correct regarding productivity? (recall; GPP gross primary production, NPP = net primary production, & R = respiration) Mark only one oval. OA) GPP+R=NPP OB) GPP-R=NPP C) NPP-GPP=R D) NPP-R=GPP Plants assimilate energy through the process of which? Mark only one oval. A) decomposition. B) respiration. C) photosynthesis. V D) regeneration. Net primary productivity in an ecosystem increases as mean annual temperature... Mark only one oval. OA) and mean annual rainfall decrease. B) decreases and mean annual rainfall increases. C) increases and mean annual rainfall decreases. D) and mean annual rainfall increases. G

1.) Describe a food chain that has at least four different trophic levels. Label the tropic level (Producer, Primary consumer, Secondary Consumer, or Tertiary Consumer), whether the organism is a(n) autotroph or heterotroph, and provide an example of an organism at each tropic level.   2.)Name two biological processes involved in rapid carbon exchange:   3.)Name two geologic processes involved in long-term carbon exchange:

(3) Based upon what we have read, all of the following are potential negative effects of our concentration on growing biofuels (e.g. corn for ethanol production) except: (a) Disappearing Brazilian rainforest used for growing corn (b) Destruction of natural petroleum reservoirs beneath the Alaskan National Wildlife Reserve (c) Decreased resources to fight famine in Africa and other impoverished areas in the world (d) National focus to find or develop practical resources for future energy production

Besides biotechnology, identify one technology that seems to have the greatest potential positive effect on food security?

Which of the following statements is correct? A) Microorganisms are significant contributors to the total biomass on Earth. B) Microorganisms represent a much smaller amount of Earth's biomass than plants. C) Microorganisms represent a much smaller amount of Earth's biomass than animals. D) Microorganisms are significant in number, but not in overall biomass.