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Quiz von Lexi Schofield, aktualisiert more than 1 year ago
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Erstellt von Lexi Schofield
vor fast 3 Jahre
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Frage 1
Frage
The process occurring within living cells which releases chemical energy stored in food as shown in the following reaction is called:
Glucose -> CO2 + H2O + Energy
Antworten
-
Glycolysis
-
Enzymatic Breakdown
-
Cellular Respiration
-
Photosynthesis
Frage 2
Frage
The majority of the energy released in the breakdown of glucose is trapped by an energy transfer compound known as:
Antworten
-
NADP
-
NAD
-
ATP
-
NADPH2
Frage 3
Frage
The energy transfer compound described in the preceding problem which traps the majority of the energy released in the breakdown of glucose:
Antworten
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is different for protists than for animals
-
is the same compound for the majority of all living organisms
-
is the same compound for all living organisms
-
is different for plants than for animals
Frage 4
Frage
Once formed, the energy transfer compound referred to in the preceding problem releases its stored energy needed for the maintenance of various activities within the cell by:
Antworten
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donating a high energy electron
-
donating a pair of hydrogen ions
-
losing hydrogen atoms to a cytochrome system
-
losing its terminal phosphate group
Frage 5
Frage
The first major set of reactions occurring in the breakdown of glucose involves the stripping away of hydrogen atoms resulting in the production of two 3-carbon molecules of pyruvic acid. This process is called:
Antworten
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Fermentation
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Glycolysis
-
Oxidation
-
Enzymatic breakdown
Frage 6
Frage
Under the right conditions, the hydrogen atoms which are stripped away during the process described in the preceding problem are picked up by a carrier molecule known as:
Antworten
-
NAD
-
ADP
-
NADH2
-
NADP
Frage 7
Frage
The carrier molecules referred to in the preceding problem transfer the hydrogen ions and their high-energy electrons to a system which moves the electrons down an energy gradient. This system is called the:
Antworten
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Hydrogen transport system
-
Cytochrome transport system
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Electron transport chain
-
respiratory chain
-
all of the above
Frage 8
Frage
After the electrons have passed through the system described in the preceding problem, the hydrogen ions and their electrons are picked up by another hydrogen acceptor which is:
Antworten
-
NADH2
-
ADP
-
NAD
-
O2
Frage 9
Frage
The compound formed from the union of the hydrogen ions, electrons, and the hydrogen acceptor molecule described in the preceding problem is:
Antworten
-
NADH2
-
H2O
-
H2O2
-
NADPH2
Frage 10
Frage
The entire sequence of reactions described from problems 5 to 9 will occur:
Antworten
-
only in the presence of oxygen
-
only in the presence of light
-
Whether or not oxygen is present
-
whether or not light is present
Frage 11
Frage
When no oxygen is present, the breakdown of glucose into two molecules of pyruvic acid results in the net production of ______ molecules of ATP.
Antworten
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6
-
8
-
4
-
2
Frage 12
Frage
When no oxygen is present, the conditions are said to be:
Antworten
-
non-oxidative
-
aerobic
-
anaerobic
-
antiaerobic
Frage 13
Frage
Under the conditions described in the preceding problem, the pyruvic acid formed from the breakdown of glucose can be further broken down under an overall process known as:
Antworten
-
cellular respiration
-
the Kreb's cycle
-
fermentation
-
glycolysis
Frage 14
Frage
The ultimate hydrogen acceptor molecule in the process described in the preceding problem is:
Antworten
-
pyruvic acid
-
acetic acid
-
O2
-
NAD
Frage 15
Frage
In yeast cells the final end product(s) of the process described in problem 13 is/are:
Antworten
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Water and carbon dioxide
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Ethyl Alcohol
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Ethyl alcohol and carbon dioxide
-
lactic acid and carbon dioxide
Frage 16
Frage
In animal cells, the final end product(s) of the process described in problem 13 is/are
Antworten
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ethyl alcohol and carbon dioxide
-
lactic acid and carbon dioxide
-
lactic acid
-
water and carbon dioxide
Frage 17
Frage
If the conditions are aerobic the overall breakdown of glucose continues, as pyruvic acid is further broken down in a second major set of reactions called:
Antworten
-
oxidative photophosphorylation
-
the Kreb's cycle
-
substrate-level phosphorylation
-
cyclic photphosphorylation
Frage 18
Frage
Before actually entering the process described in the preceding problem, each molecule of pyruvic acid is first broken down to form:
Antworten
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Acetyl - CoA and acetic acid
-
Coenzyme A and acetic acid
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Acetyl - CoA and carbon dioxide
-
Coenzyme A and carbon dioxide
Frage 19
Frage
Which lab did you like best and why?
Antworten
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Sourdough bread
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Root Beer lab
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Enzyme potato lab
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Jello lab
Frage 20
Frage
Acetyl - CoA formed in the breakdown of pyruvic acid transfers a 2-carbon acetyl group to a molecule of:
Antworten
-
-ketoglutaric acid
-
citric acid
-
lactic acid
-
oxaloacetic acid
Frage 21
Frage
The molecule thus formed from the reaction described in the preceding problem is known as
Antworten
-
lactic acid
-
citric acid
-
oxaloacetic acid
-
- ketoglutaric acid
Frage 22
Frage
For each molecule of glucose, _________ molecules of carbon dioxide are given off in the breakdown of citric acid to oxaloacetic acid.
Antworten
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6
-
4
-
8
-
2
Frage 23
Frage
In the entire sequence of reactions leading to the complete breakdown of glucose, a total of __________ molecules of ATP are formed when all processes are considered!
Antworten
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32
-
38
-
36
-
34
Frage 24
Frage
Dried yeast is introduced into a vacuum bottle containing a 25% molasses solution. After a period of time, a gas begins to be given off. The gas which is given off is most likely:
Antworten
-
CO3
-
CO2
-
H2O
-
O2
Frage 25
Frage
During the first three steps of glycolysis, ________ molecules must be invested per glucose molecule in order to overcome certain endergonic steps.
Antworten
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2 ATP
-
2 NADH
-
4 ATP
-
4 NADH
-
6 ATP
Frage 26
Frage
For each molecule of glucose processed by glycolysis, there is a net energy yield of:
Antworten
-
2 ATP and 2 NADH
-
2 ATP and 4 NADH
-
4 ATP and 2 NADH
-
4 ATP and 4 NADH
Frage 27
Frage
The complete breakdown of pyruvic acid in the presence of oxygen is an:
Antworten
-
anaerobic process that releases a large amount of energy
-
aerobic process that produces lactic acid or ethanol
-
anaerobic process that releases little usable energy
-
aerobic process that releases a large amount of energy
-
anaerobic process that produces lactic acid and ethanol
Frage 28
Frage
An oxygen debt may be accumulated in muscle cells by __________ during short bursts of intense muscular activity.
Antworten
-
the carboxylation of pyruvic acid
-
glycolysis as pyruvic acid is produced under anaerobic conditions
-
the production of lactic acid under anaerobic conditions
-
electron transport as NADH is reoxidized to NAD+
-
the Kreb's cycle as acetyl CoA is completely oxidized
Frage 29
Frage
LActic Acid is converted to pyruvic acid in the:
Antworten
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liver
-
muscles
-
brain
-
spleen
-
stomach
Frage 30
Frage
In eukaryotes, the enzymes involved in the Kreb's cycle and electron transport are located in the:
Antworten
-
cell membrane
-
cytoplasm
-
mitochondria
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peroxisomes
-
lysosomes
Frage 31
Frage
Respiration is a 2-stage process that occurs in the _____________ and consists of ____________.
Antworten
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mitochondria; glycolysis and electron transport
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cytoplasm; the Krebs cycle and electron transport
-
cytoplasm; the Krebs cycle and glycolysis
-
mitochondria; the Krebs cycle and electron transport
Frage 32
Frage
The folds of the inner membrane of mitochondria are called:
Antworten
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matrix
-
cisternae
-
grana
-
thylakoids
-
cristae
Frage 33
Frage
In eukaryotic cells, some of the enzymes associated with the Krebs cycle are located in the __________ and others are located in the __________.
Antworten
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matrix; cell membrane
-
peroxisomes; Golgi complexes
-
cytoplasm; inner membrane
-
thylakoids; grana
-
cristae; matrix
Frage 34
Frage
The enzymes of the electron transport system are located in the mitochondrial:
Antworten
-
matrix
-
outer membrane
-
cristae
-
intermembrane space
-
cisternae
Frage 35
Frage
The dense solution within the inner compartment of the mitochondria that contains enzymes, coenzymes, water and phosphates is called the:
Antworten
-
matrix
-
stroma
-
grana
-
cristae
-
cisternae
Frage 36
Frage
The Krebs cycle begins when the acetyl group of acetyl CoA is joined to _________.
Antworten
-
citric acid
-
oxaloacetic acid
-
carbon dioxide
-
malic acid
-
succinic acid
Frage 37
Frage
THe final oxidation of the carbons from the original glucose molecule is completed in:
Antworten
-
the Krebs cycle
-
glycolysis
-
the electron transport chain
-
pyruvic acid oxidation
-
alcoholic fermentation
Frage 38
Frage
The Krebs cycle is called a cycle because:
Antworten
-
the enzymes involved are located around the edge of the mitochondrion.
-
it begins and ends with oxaloacetic acid
-
cyclic AMP is produced
-
the process involves cyclic phosphorylation
-
the product of one reaction is the substrate of the next reaction.
Frage 39
Frage
The organelle that is a major producer of ATP and is found in both heterotrophs and autotrophs is the
Antworten
-
chloroplast
-
nucleus
-
ribosome
-
Golgi apparatus
-
mitchondrion
Frage 40
Frage
Lactic acid metabolism is important for what reason?
Antworten
-
It makes 2 ATP
-
It releases 4 ATP from NADPH2
-
It provides a burst of energy to move when oxygen has run out
-
B and C
-
None of the above
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