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BIOL 101 Study Guide Quiz 3, Verified and Correct Answers, Liberty University
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BIOL 101 Study Guide Quiz 3, Verified and Correct Answers, Liberty University
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STUDY GUIDE: QUIZ 3,LIBERTY UNIVERSITYQuiz Preparation Tasks: Your Answers and Notes
6 Energy-Driven Inventions
6.1 Living Systems Require a Flow of Energy
In a phrase, how do physicists define “energy”? The ability to do work
The physicist’s definition of energy is not ____________ __________ Comprehensive enough
for use in defining energy changes within a living cell.
How would a cell biologist define “energy”? The ability to make specific changes occur
List five major sorts or categories of energy change within the cell. (a) biosynthesis, synthetic work is demonstrated by the making of
Fig 6.2. daughter cells from a parent cell
(b) movement is represented by the streaming movement of the
cytoplasm
(c) concentration of a substance within a cell is affected by active
transport
(d) electrical potential is generated by ion movement across a
membrane
(e) heat energy is generated by increasing the rate of respiration
in the cell.
Sometimes the cell pumps substances against diffusion forces that
would otherwise carry those substances the other way. What
term/phrase would we give to this pumping process?
_____________ ___ _______________
On a cold day, which of the following processes do your cells depend E. All of the above
on to maintain an operating temperature of 37 degrees Celsius? A.
muscle contraction, B. shivering, C.Respiration energy production, D.
metabolic heat generation, or E.all of the above?
6.2 Laws of Energy Flow in the Living World
, This is because, in cars and in living things, energy conversion is Energy
inefficient, with much energy being lost in the form ofuseless
_______. Fig 6.4
So, when your car engine burns the octane in gasoline, in what form Heat energy
does at least 50% of the energy of the octane end up?
In a crowded, unventilated room, what causes the temperature to The students burn glucose to maintain cell life and take notes. But
rise? the exchange isn’t even 50% efficient. The rest of glucose’s
energy is lost to the room as heat.
What form of energy do producers use when they set about to Solar energy
generate chemical energy—the energy of C―H and C―O―H bonds?
Thus, a producer organism is called a “producer” because it converts Chemical energy
solar energy to usable ______ _______. Fig 6.5 “Energy In”
6.3 Energy Flows in Chemical Reactions
Existing chemical bonds between atoms are broken and new ones are Chemical reaction
formed between different atoms. In the broadest sense this is the
definition for a __________ _________.
Write out an example of a chemical reaction using names and
symbols of reactants and products with an arrow between them.
Whenever chemical bonds are broken, energy is __________. Required, given off
Whenever chemical bonds form, energy is __________. (Item #1)
Does an endergonic reaction require the input of energy, or does it An endergonic reaction requires the input of energy
give off energy? (Item #1)
What term is given to the amount of energy required to break the Activation energy
bonds in reactant molecules? (Item #3, Fig 6.6)
What is true of the bonds in reactant molecules that keeps most Lower. The amount of energy required to break their bonds is
chemical reactions from occurring in nature? Their energy level is simply not present in their environment.
_______ than the activation energy necessary to break them. (Item
#3)
When ________ energy is not available for a given chemical reaction, Activation
the reaction will not go. (Item #3 )
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