BIOL 2070 - LECTURE 5 EXAM QUESTIONS WITH WELL DEFINED
VERIFIED ANSWERS GRADED A++
True or False: Living things are able to exist because of a continuous input of
energy
True
Energy that is not lost as heat is used for what?
To fuel metabolism, growth, movement and other functions
Define potential energy.
Energy stored in an object because of its position
Position of electrons in relation to each other such as in a covalent chemical
bond is an example of what?
Potential energy
FITB: Potential energy can be stored in an ______ gradient.
Ion
What is kinetic energy?
Energy of movement and refers to molecules continuously motion
Correct this statement: Cells use potential energy to carry out work of the cell.
Cells use kinetic energy to carry out work of the cell.
How is heat energy generated?
Conversion between potential and kinetic energy
Before energy from food can be used, what must be done?
The food must be broken down and metabolized
, Where do key reactions of energy generation and usage occur in a cell?
Mitochondria
In the mitochondria, energy released by food breakdown is converted into what?
Potential energy in ATP
FITB: _______ is the energy currency of the cell
ATP
FITB: During oxidative phosphorylation, the terminal _____ group is easily
hydrolyzed and removed.
phosphate
FITB: Energy released by ________ during oxidative phosphorylation can be used
to fuel work and chemical reactions in a cell.
Hydrolysis
True or False: A hydrolyzed phosphate group is always degraded by lysosomes.
False. It can be transferred to another protein where it changes the shape and function
of that protein
true or False: Catabolism of food takes place in 3 stages.
True
What are the stages of catabolism in simple terms?
1. Digestion.
2. Release of energy.
3. Energy Storage
Describe the first stage of catabolism
The breakdown of large food molecules to simple subunits
VERIFIED ANSWERS GRADED A++
True or False: Living things are able to exist because of a continuous input of
energy
True
Energy that is not lost as heat is used for what?
To fuel metabolism, growth, movement and other functions
Define potential energy.
Energy stored in an object because of its position
Position of electrons in relation to each other such as in a covalent chemical
bond is an example of what?
Potential energy
FITB: Potential energy can be stored in an ______ gradient.
Ion
What is kinetic energy?
Energy of movement and refers to molecules continuously motion
Correct this statement: Cells use potential energy to carry out work of the cell.
Cells use kinetic energy to carry out work of the cell.
How is heat energy generated?
Conversion between potential and kinetic energy
Before energy from food can be used, what must be done?
The food must be broken down and metabolized
, Where do key reactions of energy generation and usage occur in a cell?
Mitochondria
In the mitochondria, energy released by food breakdown is converted into what?
Potential energy in ATP
FITB: _______ is the energy currency of the cell
ATP
FITB: During oxidative phosphorylation, the terminal _____ group is easily
hydrolyzed and removed.
phosphate
FITB: Energy released by ________ during oxidative phosphorylation can be used
to fuel work and chemical reactions in a cell.
Hydrolysis
True or False: A hydrolyzed phosphate group is always degraded by lysosomes.
False. It can be transferred to another protein where it changes the shape and function
of that protein
true or False: Catabolism of food takes place in 3 stages.
True
What are the stages of catabolism in simple terms?
1. Digestion.
2. Release of energy.
3. Energy Storage
Describe the first stage of catabolism
The breakdown of large food molecules to simple subunits
