2_Bioenergetics Flashcards
------------------------------------------------------------------------------------------------------------- ASSOCIATED READING: Campbell Biology (11th ed.) pg 887-888. THINGS YOU SHOULD KNOW/QUESTIONS YOU SHOULD BE ABLE TO ANSWER FROM THE VIDEO AND READING From the Video: Kahn Academy Bioenergetics: The transformation from ...
Plants re-package energy from the sun into what biological organic molecule?
It is stored as ATP and NADPH. The light reaction converts light energy to two compounds: NADPH and ATP
What process achieves this energy transformation of solar power to ATP and NADPH?
The light reaction of photosynthesis
What are the reactants and products of this process (photosynthesis)?
Reactants = H20 and CO2
Products = O2 and glucose
(6CO2 + 12H20 + light energy yields C6H12O6 + 6O2 + 6H20)
Energy is a reactant
Organisms transfer the energy in the bonds of glucose into what biological molecule that is a more usable form of energy?
Pyruvate and ATP. Pyruvate is further broken down into CoA
What process achieves this transformation of glucose into pyruvate and ATP?
In cellular respiration, the Calvin Cycle synthesizes glucose
What are the reactants and products of the Calvin Cycle reaction?
In Cellular respiration, they are reversed from that of photosynthesis:
Reactants = O2 and glucose
Products = H20 and CO2
C6H12O6 + 6O2 + 6H20 yields 6CO2 + 12H20 + light
Energy is a product
In what way are the energy transformations described above linked?
In photosynthesis, energy is added from sunlight;
In cellular respiration, energy is released and allows body to do work like pump the heart and do other work.
Bioenergetics
the overall flow and transformation of energy in an animal; bioenergetics determines nutritional needs and is related to an animal’s size, activity, and environment
How do most autotrophs (plants) acquire energy-rich organic molecules?
Plants use light energy to build energy-rich organic molecules for fuel
How do heterotrophs (animals) acquire energy-rich organic molecules?
Animals obtain chemical energy from food which contains organic molecules synthesized by other organisms
Metabolic rate
the sum of all the energy an animal uses in a given time interval
