Unit 3 Flashcards
Law of thermodynamics
Energy can be transferred/transformed just not destroyed
- energy is lost along the way
Catabolic
Large molecules break down into small ones; energy is released
Anabolic
Small molecules assemble into large ones; energy required
Exergonic reaction
Breakdown into simpler molecules, fewer bonds, energy left
Endergonic reaction
Synthesis of more complex molecules, more bonds
Energy coupling
The use of a reaction that releases energy (exergonic) to drive a reaction taht requires energy (endergonic)
Structure of enzyme
Lock and key like; substrate locks into active site of the enzyme
Enzyme action
With the pressence of enzymes the cell uses less energy and produces the same amount of products
Denaturalization
folded protein unfolds, enzymes are proteins
- changes of temperature and pH outside of the optimal range for an anzyme will cause changes to structure which alters its efficiency
Temperature for enzymes
Lower temperature decreases the speed of movement
Higher temperature increase collision, but if it is too high then it will denature
Concentration
Increase in enzyme and subtrate concentraton increases the reaction rate, but it then levels out
Competitive inhibitors
Inhibitor gets in active site blocking the substrate from binding
Noncompetitive inhibitor
Changes shape of the of enzyme so it cannot bind to substrate
Feedback inhibition
Product of an enzymatic pathways can swtich off an enzyme in the pathway
Photosynthesis equation
Carbon dioxide + water —> sugar + oxygen
