UA BSC 108 Exam 2 NEWEST ACTUAL EXAM
COMPLETE 200+ QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
What do all living organisms need to sustain life? -
CORRECT ANSWER Nutrients, water, and energy
What is energy? - CORRECT ANSWER The capacity to
do work
What are the different types of energy? - CORRECT
ANSWER Kinetic, potential, thermal, chemical, and more
How do we measure energy? Why? - CORRECT ANSWER
Joules or calories, to quantify energy changes
What is the study of energy? - CORRECT ANSWER
Thermodynamics
What is a calorie? - CORRECT ANSWER A unit of energy
What is a Calorie? (there is a difference between this one
and the one above.) - CORRECT ANSWER A kilocalorie,
or 1000 small calories
,What is the First Law of Thermodynamics? Know it and what
it means. - CORRECT ANSWER Energy cannot be
created or destroyed, only transferred or changed in form
Why is heat lost in biological systems? - CORRECT
ANSWER Because no process is perfectly efficient
Where does new energy come from? How is most energy lost
(in what form)? - CORRECT ANSWER The sun; lost as
heat
What is the Second Law of Thermodynamics? Know it and
what it means. - CORRECT ANSWER Entropy of an
isolated system always increases
What is entropy? - CORRECT ANSWER Measure of
disorder
How do you make a reaction go that requires energy? -
CORRECT ANSWER Provide energy (like ATP)
What is activation energy? - CORRECT ANSWER The
energy needed to start a reaction
What is an enzyme and how do they work? - CORRECT
ANSWER Biological catalysts that speed up reactions by
lowering activation energy
What factors affect how well enzymes work? - CORRECT
ANSWER Temperature, pH, substrate concentration
, How does an enzyme inhibitor work? - CORRECT
ANSWER Binds to enzyme and reduces its activity
What is ATP and what is it used for? - CORRECT ANSWER
Energy currency of the cell
How do you get energy from ATP? - CORRECT ANSWER
By breaking its high-energy phosphate bonds
What is the difference between diffusion and osmosis? -
CORRECT ANSWER Diffusion: movement of molecules;
osmosis: diffusion of water
What is hyper, hypo and isotonic? - CORRECT ANSWER
Hyper: high solute concentration, hypo: low solute
concentration, iso: equal solute concentration
What happens to red blood cells if you place them in a
hyperosmotic, hypoosmotic or isosmotic? - CORRECT
ANSWER Hyper: shrink, hypo: swell, iso: no change
Be able to look at two solutions and tell which is hyper or
hypoosmotic. - CORRECT ANSWER Higher solute
concentration: hyper, lower: hypo
Be able to look at two solutions and tell which way osmosis
will occur? - CORRECT ANSWER Water moves from
hypo to hyper
What is a producer? Consumer? - CORRECT ANSWER
Producer: makes own food; Consumer: eats others
COMPLETE 200+ QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
What do all living organisms need to sustain life? -
CORRECT ANSWER Nutrients, water, and energy
What is energy? - CORRECT ANSWER The capacity to
do work
What are the different types of energy? - CORRECT
ANSWER Kinetic, potential, thermal, chemical, and more
How do we measure energy? Why? - CORRECT ANSWER
Joules or calories, to quantify energy changes
What is the study of energy? - CORRECT ANSWER
Thermodynamics
What is a calorie? - CORRECT ANSWER A unit of energy
What is a Calorie? (there is a difference between this one
and the one above.) - CORRECT ANSWER A kilocalorie,
or 1000 small calories
,What is the First Law of Thermodynamics? Know it and what
it means. - CORRECT ANSWER Energy cannot be
created or destroyed, only transferred or changed in form
Why is heat lost in biological systems? - CORRECT
ANSWER Because no process is perfectly efficient
Where does new energy come from? How is most energy lost
(in what form)? - CORRECT ANSWER The sun; lost as
heat
What is the Second Law of Thermodynamics? Know it and
what it means. - CORRECT ANSWER Entropy of an
isolated system always increases
What is entropy? - CORRECT ANSWER Measure of
disorder
How do you make a reaction go that requires energy? -
CORRECT ANSWER Provide energy (like ATP)
What is activation energy? - CORRECT ANSWER The
energy needed to start a reaction
What is an enzyme and how do they work? - CORRECT
ANSWER Biological catalysts that speed up reactions by
lowering activation energy
What factors affect how well enzymes work? - CORRECT
ANSWER Temperature, pH, substrate concentration
, How does an enzyme inhibitor work? - CORRECT
ANSWER Binds to enzyme and reduces its activity
What is ATP and what is it used for? - CORRECT ANSWER
Energy currency of the cell
How do you get energy from ATP? - CORRECT ANSWER
By breaking its high-energy phosphate bonds
What is the difference between diffusion and osmosis? -
CORRECT ANSWER Diffusion: movement of molecules;
osmosis: diffusion of water
What is hyper, hypo and isotonic? - CORRECT ANSWER
Hyper: high solute concentration, hypo: low solute
concentration, iso: equal solute concentration
What happens to red blood cells if you place them in a
hyperosmotic, hypoosmotic or isosmotic? - CORRECT
ANSWER Hyper: shrink, hypo: swell, iso: no change
Be able to look at two solutions and tell which is hyper or
hypoosmotic. - CORRECT ANSWER Higher solute
concentration: hyper, lower: hypo
Be able to look at two solutions and tell which way osmosis
will occur? - CORRECT ANSWER Water moves from
hypo to hyper
What is a producer? Consumer? - CORRECT ANSWER
Producer: makes own food; Consumer: eats others
