BIO-131 HFCC LECTURE EXAM 3 STUDY GUIDE 2026/2027 | PRACTICE
QUESTIONS, VERIFIED ANSWERS & COMPREHENSIVE REVIEW
How do fuels provide energy for living organisms? - ANS ✔✔Fuels provide energy for living
organisms by storing chemical energy within their molecular bonds.
Provide an example of energy conversion... - ANS ✔✔Light Bulb, Car Engine, Human Body, and
solar panel.
What is the ultimate source of energy for living organisms? - ANS ✔✔The sun
What is energy? - ANS ✔✔the ability to do work
Define Potential and Kinetic energy. Give examples. - ANS ✔✔Potential energy is stored energy
an object possesses due to its position or condition, like a rock perched on a cliff, while kinetic
energy is the energy an object has due to its motion.
Potential Energy:
stretched rubber band
water behind a dam
Kinetic Energy:
A car driver down a road
Rolling ba
Is it chemical energy considered potential or kinetic energy? - ANS ✔✔Potential Energy
, What is ATP and why is it important for the cell? Would this be considered potential or kinetic
energy? - ANS ✔✔Adenosine Triphosphate, and it is considered the "energy currency" of a cell,
meaning it is the primary molecule used to store and transfer energy for various cellular
processes; it is considered potential energy because the energy is stored within the chemical
bonds of the molecule, ready to be released when needed.
Define producer and consumer. Give Examples. - ANS ✔✔A producer is an organism or entity
that creates or generates something, like a plant making its own food through photosynthesis,
while a consumer is an organism or entity that utilizes or "consumes" something created by a
producer, like an animal eating a plant for energy;
Write out a chemical reaction for photosynthesis. What are the Reactants? Products? - ANS
✔✔6CO2 + 6H2O → C6H12O6 + 6O2.
Reactants: Carbon dioxide (CO2) and water (H2O)
Products: Glucose (C6H12O6) and oxygen (O2)
Explanation: Six molecules of carbon dioxide and six molecules of water react in the presence of
sunlight (not shown in the equation) to produce one molecule of glucose and six molecules of
oxygen.
Where in the cell does photosynthesis take place? - ANS ✔✔Photosynthesis takes place within
the chloroplasts of a plant cell
Describe the structure of the chloroplast. - ANS ✔✔a double-membrane bound organelle found
in plant cells, containing a fluid-filled interior called the stroma, where stacks of flattened sacs
called thylakoids are embedded
Where do the light reactions take place? What is its purpose? - ANS ✔✔The light reactions of
photosynthesis occur within the thylakoid membranes of chloroplasts; their primary purpose is
to convert light energy from the sun into chemical energy, stored in the molecules ATP and
QUESTIONS, VERIFIED ANSWERS & COMPREHENSIVE REVIEW
How do fuels provide energy for living organisms? - ANS ✔✔Fuels provide energy for living
organisms by storing chemical energy within their molecular bonds.
Provide an example of energy conversion... - ANS ✔✔Light Bulb, Car Engine, Human Body, and
solar panel.
What is the ultimate source of energy for living organisms? - ANS ✔✔The sun
What is energy? - ANS ✔✔the ability to do work
Define Potential and Kinetic energy. Give examples. - ANS ✔✔Potential energy is stored energy
an object possesses due to its position or condition, like a rock perched on a cliff, while kinetic
energy is the energy an object has due to its motion.
Potential Energy:
stretched rubber band
water behind a dam
Kinetic Energy:
A car driver down a road
Rolling ba
Is it chemical energy considered potential or kinetic energy? - ANS ✔✔Potential Energy
, What is ATP and why is it important for the cell? Would this be considered potential or kinetic
energy? - ANS ✔✔Adenosine Triphosphate, and it is considered the "energy currency" of a cell,
meaning it is the primary molecule used to store and transfer energy for various cellular
processes; it is considered potential energy because the energy is stored within the chemical
bonds of the molecule, ready to be released when needed.
Define producer and consumer. Give Examples. - ANS ✔✔A producer is an organism or entity
that creates or generates something, like a plant making its own food through photosynthesis,
while a consumer is an organism or entity that utilizes or "consumes" something created by a
producer, like an animal eating a plant for energy;
Write out a chemical reaction for photosynthesis. What are the Reactants? Products? - ANS
✔✔6CO2 + 6H2O → C6H12O6 + 6O2.
Reactants: Carbon dioxide (CO2) and water (H2O)
Products: Glucose (C6H12O6) and oxygen (O2)
Explanation: Six molecules of carbon dioxide and six molecules of water react in the presence of
sunlight (not shown in the equation) to produce one molecule of glucose and six molecules of
oxygen.
Where in the cell does photosynthesis take place? - ANS ✔✔Photosynthesis takes place within
the chloroplasts of a plant cell
Describe the structure of the chloroplast. - ANS ✔✔a double-membrane bound organelle found
in plant cells, containing a fluid-filled interior called the stroma, where stacks of flattened sacs
called thylakoids are embedded
Where do the light reactions take place? What is its purpose? - ANS ✔✔The light reactions of
photosynthesis occur within the thylakoid membranes of chloroplasts; their primary purpose is
to convert light energy from the sun into chemical energy, stored in the molecules ATP and
