Biology 108 Exam 2 Study Guide UPDATED
ACTUAL Exam Questions and CORRECT
Answers
What do all living organisms need to sustain life? - CORRECT ANSWER - energy
What is energy? - CORRECT ANSWER - the capacity to do work
What are the different types of energy? - CORRECT ANSWER - Kinetic- motion
Potential- stored
How do we measure energy? Why? - CORRECT ANSWER - Temperature
You are measuring the kinetic energy and there is heat
What is the study of energy? - CORRECT ANSWER - thermodynamics
What is a calorie? - CORRECT ANSWER - the amount of energy that raises the
temperature 1 gram of water by 1 degree Celsius
What is a Calorie?(different) - CORRECT ANSWER - Kilocalorie(1,000 calories)
What is the First Law of Thermodynamics? Know it and what it means. - CORRECT
ANSWER - Energy cannot be created or destroyed(conservation of energy). You always
have the same amount of energy
Why is heat lost in biological systems? - CORRECT ANSWER - its hard to harness
, Where does new energy come from? How is most energy lost(in what form)? - CORRECT
ANSWER - chemical reactions, heat/ATP
What is the Second Law of Thermodynamics? Know it and what it means. - CORRECT
ANSWER - Energy cannot be changed from one form into another without loss of usable
energy.
What is entropy? - CORRECT ANSWER - measure of disorder and randomness
How do you make a reaction go that requires energy? - CORRECT ANSWER - ATP
What is activation energy? - CORRECT ANSWER - the energy that activates the reactants
in a chemical reaction; triggers a chemical reaction to proceed
What is an enzyme and how do they work? - CORRECT ANSWER - A protein that speeds
up chemical reactions.
-they can function over and over again
-*work by lowering the activation energy of a chemical reaction
What factors affect how well enzymes work? - CORRECT ANSWER - specificity, pH,
temperature, concentration of enzyme/substrate, presence of inhibitor
How does an enzyme inhibitor work? - CORRECT ANSWER - a chemical interferes with
an enzyme's activity by acting as a substrate imposter and changing the enzyme's shape, either by
plugging up the active site or binding to another site on the enzyme
What is ATP and what is it used for? - CORRECT ANSWER - Adenosine Triphosphae,
energy that is currently in cells, used for cellular work
-can be broken down to a molecule of ADP
ACTUAL Exam Questions and CORRECT
Answers
What do all living organisms need to sustain life? - CORRECT ANSWER - energy
What is energy? - CORRECT ANSWER - the capacity to do work
What are the different types of energy? - CORRECT ANSWER - Kinetic- motion
Potential- stored
How do we measure energy? Why? - CORRECT ANSWER - Temperature
You are measuring the kinetic energy and there is heat
What is the study of energy? - CORRECT ANSWER - thermodynamics
What is a calorie? - CORRECT ANSWER - the amount of energy that raises the
temperature 1 gram of water by 1 degree Celsius
What is a Calorie?(different) - CORRECT ANSWER - Kilocalorie(1,000 calories)
What is the First Law of Thermodynamics? Know it and what it means. - CORRECT
ANSWER - Energy cannot be created or destroyed(conservation of energy). You always
have the same amount of energy
Why is heat lost in biological systems? - CORRECT ANSWER - its hard to harness
, Where does new energy come from? How is most energy lost(in what form)? - CORRECT
ANSWER - chemical reactions, heat/ATP
What is the Second Law of Thermodynamics? Know it and what it means. - CORRECT
ANSWER - Energy cannot be changed from one form into another without loss of usable
energy.
What is entropy? - CORRECT ANSWER - measure of disorder and randomness
How do you make a reaction go that requires energy? - CORRECT ANSWER - ATP
What is activation energy? - CORRECT ANSWER - the energy that activates the reactants
in a chemical reaction; triggers a chemical reaction to proceed
What is an enzyme and how do they work? - CORRECT ANSWER - A protein that speeds
up chemical reactions.
-they can function over and over again
-*work by lowering the activation energy of a chemical reaction
What factors affect how well enzymes work? - CORRECT ANSWER - specificity, pH,
temperature, concentration of enzyme/substrate, presence of inhibitor
How does an enzyme inhibitor work? - CORRECT ANSWER - a chemical interferes with
an enzyme's activity by acting as a substrate imposter and changing the enzyme's shape, either by
plugging up the active site or binding to another site on the enzyme
What is ATP and what is it used for? - CORRECT ANSWER - Adenosine Triphosphae,
energy that is currently in cells, used for cellular work
-can be broken down to a molecule of ADP
