Name: Liberty University BIOL 101 Quiz 3 Complete Solutions Correct Answers Key
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Liberty University BIOL 101 Quiz 3 Complete Solutions Correct Answers Key
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For most chemical reactions in the non-living world, the energy required to break bonds in
the reactant molecules
In biosynthesis of a protein, energy for bonding amino acids together comes from
A producer organism is called a “producer” because it produces
Physicists define energy as
Reactants like hydrogen and oxygen molecules and are converted into a product like water
molecules in the course of
Systems that convert energy from one form to another are
In a long metabolic pathway, the multiple changes made to an initial reactant molecule are
entirely controlled by
Energy-releasing reactions drive biosynthetic ones forward by contributing to a pool of
If bacteria can get their energy for life from a single kind of chemical reaction, then that
reaction
An endergonic reaction always
An allosteric enzyme
A useful way for a cell biologist to define energy is
In nature, as energy freely changes from one form to another
On a cold day, your cells depend on ________ to maintain an operating temperature of 37
degrees Celsius.
Whenever chemical bonds are broken, energy is __________. Whenever chemical bonds
form, energy is __________.
Producer organisms convert _______ energy to chemical energy—the energy of C―H and
C―O―H bonds.
Three phosphate groups linked to a ribose sugar which, in turn, is linked to a pyrimidine base
known as adenine: this phrase describes the structure of
An excess amount of product accumulates at the end of a metabolic pathway. The product
then binds to the allosteric site of the first enzyme along the pathway shutting down the
pathway. We call this process

The energy storage molecule that connects endergonic and exergonic reactions, driving
endergonic reactions forward, is
Existing chemical bonds between atoms are broken and new ones are formed between
different atoms. This process
The activation energy of a reaction can be lowered if the reaction is catalyzed by
A single regulatory molecule can shut down multiple metabolic pathways if it is able to
In respiration, chemical energy is transferred from glucose to ATP. The energy transfer
however, is not 100% efficient. In the transfer, some of the energy is lost as
Moving ions across a membrane requires energy when
Which of the following substances would most likely enable a flagellum to drive a bacterium
forward through the medium in which it is swimming?
Metabolic pathways
Glucose gets used up in muscle cells because
Within the cell, useful chemical energy is held in stable form as
In building a protein, when amino acids are to be bonded together
Positively charged protons move freely from one side of the mitochondrial membrane to
If moving ions across a membrane requires energy it is because
To derive energy from an ATP molecule
If the final product of a metabolic pathway begins to build up in excess, the pathway can
often be slowed down by a process called
Light dependent reactions of photosynthesis produce
The wavelengths of light used in photosynthesis are found in the _________ portion of the
electromagnetic spectrum.
When light of the correct wavelength hits a photosynthetic pigment molecule
All of the six carbon atoms in each glucose molecule leave respiration in the form of carbon
dioxide. Most of them leave during which part of aerobic respiration?
Which of the following phrases best describes the role of NADPH in photosynthesis?
In the process of glycolysis one molecule of _______ is converted to two molecules of
__________.
The overall process that uptakes energy-poor molecules (CO2 and H2O) from their reservoirs

in nature and converts them into energy-rich molecules is
The process of aerobic respiration begins with
Photosynthesis and respiration are complementing processes within a global cycle known as
the
Photosynthesis and respiration are complementary processes within
The value of the three stages of aerobic respiration is their ability to break down glucose, a
single molecule, with the resultant production of about
The Krebs cycle’s NADH products are of value because
In photosynthesis, ______ and ______ are used to build_______ and release______.
When electrons flow between photosystems, they ________ which can be used to generate
new ____________ molecules.
New molecules of glucose are produced
Accessory pigments enable the chloroplast to
In photosynthesis the H atoms used to make high-energy carbohydrates like glucose come
from
In the electron transfer phosphorylation process, ______ is a reactant and _____ is a product.
In the chloroplast, light dependent reactions take place in the __________________ while
light independent reactions take place in the __________________.
If fermentation reactions did not occur on earth then in places where no oxygen is available
Oxygen is an important molecule to both respiration and photosynthesis. If evolution created
these two processes one after the other, which would probably have had to appear first on
earth?
During the electron transfer reactions, protons (H+ ions) are pumped (moved) to one side of
the inner membrane of the mitochondrion. The value of this pumping is that the proton
gradient is then used
Fermentation of sugar causes grape juice to become wine. In fermentation, the two products
given off are ____________ and _________. The latter product accumulates in the wine
during the process.
The three metabolic pathways that make up aerobic respiration are really all parts of one
larger pathway because
Which of the following is valuable as the most immediate source of the greatest amount of

ATP energy given off during aerobic respiration?
Light independent reactions serve to
Identify the correct order of the processes of aerobic respiration
In all of aerobic respiration, the last molecule waiting at the very end to accept electrons
The “powerhouse” organelle within the cell in which electron transfer reactions are occur
In the light-dependent reaction, the two photosystems work together to keep the
concentrations of ______ and ______ appropriate for their amounts needed in the light-
independent reaction
During the entire aerobic respiration process, the breakdown of a single molecule of glucose
results in the production of
Which of the following is the most immediate source of the greatest amount of ATP energy
given off during aerobic respiration?
Fermentation of sugar causes bread dough to “rise”. In fermentation, the two products given
off are ____________ and _________. The latter product evaporates from the bread during
the baking process
A chemoautotroph is an organism that gets its energy from _______________ instead of from
_________ as photoautotrophic plants do. (Heterotrophs like humans use sugar for energy.)

Liberty University BIOL 101 Quiz 3 Complete Solutions Correct Answers Key

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