41 terms

AP Biology Chapter 9-10: Test Practice

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Which of the following statements describes the results of this reaction?
C6H12O6 + 6O2 -----> 6CO2 + 6H2O +Energy
C6H12O6 is oxidized and O2 is reduced
Molecular oxygen is produced during ________.
aerobic respiration
What is the name of the process in which glucose is converted to pyruvate with the production of ATP and NADH?
glycolysis
Which statement regarding events in the functioning of photosystem II is false?
the P680 chlorophyll donates a pair of protons to NADPH, which is thus converted to NADP+
Plastids that reflect yellow and green photon wavelengths are know as ______.
chloroplasts
How many carbon atoms are fed into the Krebs cycle as a result of the oxidation of one molecule of pyruvate (after entering into mitochondria)
2
In the glycolysis process, phosphofructokinase (Phrank) does what to fructose-P?
transfers a phosphate from an ATP molecule onto the fructose-P
In a plant cell, where are the ATP synthase complexes located?
thylakoid membrane and inner mitochondrial membrane
The light reactions of photosynthesis generate high-energy electrons, which end up in ______. The light reactions also produce _______ and ________.
NADPH.....ATP......oxygen
During glycolysis, phosphoglucoisomerase (Pharrel/Phil) will do what to glucose-P?
rearranges glucose-P into fructose-P
The reaction below represents what type of reaction?
C6H12O6 + 6O2 ------> 6CO2 + 6H2O + Energy
aerobic respiration
During aerobic respiration, a proton gradient in mitochondria is generated by ____ and used primarily for _____.
the electron transport chain; ATP synthesis
For each molecule of glucose that is metabolized by glycolysis and the Krebs cycle, what is the total number or NADH + FADH2 molecules produced?
10
During photosynthesis, visible light has enough energy to
excite electrons and create a NADPH molecule
Of the following, what do both mitochondria and chloroplasts have in common?
contain enzymes and ATP synthase
Where does glycolysis take place?
cytoplasm
Starting with one molecule of glucose, the "net" products of glycolysis are
2 NADH, 2 H+, 2 pyruvates, 2 ATP, and 2H2O
What is the primary function of the Calvin Cycle?
synthesize simple sugars from carbon dioxide
Which of the following statements is (are) correct about an oxidation-reduction reduction (or redox) reaction?
the molecule that is reduced gains electrons
the molecule that is oxidized loses electrons
Sports physiologists at an Olympic training center wanted to monitor athletes to determine at what point their muscles were functioning anaerobically. They could do this by checking for a buildup of which of the following compounds?
lactate
What is the role of NADP+ in photosynthesis?
Is is reduced and then carries electrons to the Calvin cycle
How many molecules of carbon dioxide (CO2) would be produced by five turns of the Krebs Cycle?
10
A plant has a unique photosynthetic pigment. The leaves of this plant appear to be reddish yellow. What wavelengths of visible light are not being absorbed by this pigment?
red and yellow
What is the term for metabolic pathways that release stored energy by breaking down complex molecules?
catabolic pathways
What does cyclic electron flow in the chloroplast produce?
ATP
What is the primary function of the light reactions of photosynthesis?
to produce ATP and NADPH
What are the products of noncyclic photophosphorylation?
ATP and NADPH
What is the total production of ATP molecules created by aerobic respiration from one glucose molecule?
<38
Which of the following processes requires sunlight, ADP, and water?
Photosystem II
of the metabolic pathways listed below, which is the only pathway found in all organisms?
glycolysis
A molecule becomes more oxidized when it
loses an electron
All of the events listed below occur in the light reactions of photosynthesis except
carbon dioxide is incorporated in PGA
If one carbon dioxide molecule reacts in each "turn" of the Calvin Cycle. How many turns of the cycle are required for the synthesis of one glucose molecule?
6
Which process in eukaryotic cells will proceed normally whether oxygen is present or absent?
glycolysis
The final acceptor of electrons in the electron transport chain is
oxygen
The function of both alcohol fermentation and lactic acid fermentation is to
oxidize NADH to NAD+
The function of cellular respiration is to
extract usable energy from glucose
All of the following are functions of the Krebs cycle except
adding electrons and protons to oxygen, forming water
During fermentation, a pyruvate molecule is oxidized, creating CO2 and a two-carbon compound. This molecule is the reduced by NADH to create ______.
alcohol
Which on of the following is cycled in the cyclic part of light reactions?
electrons
Where does NADP+ become reduced to make NADPH?
Photosystem I
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