Control of Cell Reactions Flashcards
An endergonic reaction has _____ energy products
High
An exergonic reaction has _____ energy products
Low
What is activation energy?
The energy needed to start a chemical reaction
What are the main three things to worry about when involved w/ heat and energy?
- The quick release of energy
- High heat killing cells
- Not being enough heat to start reactions
What is a catalyst?
A substance that controls the rate of chemical reactions and don’t change or get used up
What are the catalysts in cells?
Enzymes
What are some of the things enzymes do in cells?
- Reduce amounts of activation energy
- Control the rates of reactions (allows the temperature to stay at a non-harmful spot)
What is a substrate?
A substrate is the substance an enzyme acts on
What happens to substrates during a reaction?
The substrate is changed into one (or more) new products
Can enzymes be reused?
Yes
How many reactions can an enzyme catalyze in one minute?
Anywhere from 100 to 30,000,000
What part of a title do most enzymes have?
Most enzymes end with “-ase”
Difference between enzymes and coenzymes?
Coenzymes aren’t protiens
