AP BIOLOGY

ECOLOGY

ENERGY FLOW AND THE FOOD CHAIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Name 2 food making processes.
A
photosynthesis and chemosynthesis
B
sunlight and bacteria
C
trophic levels and biomes
D
producers and consumers
Explanation: 

Detailed explanation-1: -There are two main stages of photosynthesis: the light-dependent reactions and the Calvin cycle.

Detailed explanation-2: -Photosynthesis and chemosynthesis are both processes by which organisms produce food; photosynthesis is powered by sunlight while chemosynthesis runs on chemical energy.

Detailed explanation-3: -Photosynthetic organisms make sugar (glucose molecules) for later use as food energy. Chemosynthesis occurs in organisms such as some bacteria and archaea.

Detailed explanation-4: -Chemosynthesis (at hydrothermal vents) hydrogen sulfide (H2S), add carbon dioxide (CO2) and oxygen (O2) and produce sugar (CH2O), sulfur (S), and water (H2O): This is one example of a chemosynthetic pathway.

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