Biology Photosynthesis and Respiration Quiz
Select the anaerobic pathway.
fermentation
Considering only glycolysis and the conversion of pyruvate molecules to acetyl CoA molecules, how many NADH molecules will be produced from one glucose molecule?
four
Which of the following molecules can be used as a substrate for cellular respiration?
glucose, lipids, proteins and fatty acids
An example of an anabolic reaction is the splitting of a polysaccharide into monosaccharides.
False
A group of thylakoid discs make up:
granum
Which of the following is not one of the four stages of the aerobic respiration of glucose?
hydrolysis
The reactions that occur in the thylakoid membranes are:
light dependent reactions
The Krebs cycle takes place in the
mitochondria
If conditions are aerobic, pyruvate flows directly into the __________ where some of its atoms are converted next to __________.
mitochondria; acetyl coenzyme A
For each acetyl CoA molecule that enters the citric acid cycle, two CO2 molecules are produced.
True
The downhill flow of protons through the ATP synthase complex powers the production of ATP.
True
NADH is formed when NAD+ accepts:
a proton and a pair of electrons
Plants need which of the following to carry on photosynthesis?
both H2O and CO2
The splitting of molecules into smaller components is referred to as:
catabolism
When hydrogen ions (protons) are pumped across the inner mitochondrial membrane, they form a proton gradient. ATP is then formed by a process known as:
chemiosmosis
The most important pigment(s) for the process of photosynthesis is(are):
chlorophyll a
One product of the initial (first) reaction of the citric acid cycle is:
citrate
A glucose molecule that is metabolized via aerobic respiration has been completely broken down and released as CO2 by the end of:
citric acid cycle
Select the processes that are matched with the incorrect amount of ATP produced by that process per glucose molecule.
citric acid cycle-4 ATP
In eukaryotes, glycolysis occurs in the:
cytosol
Glycolysis yields a net energy profit of __________ ATP molecules per molecule of glucose.
2
The overall reactions of photosynthesis are best summarized as:
6 CO2 + 12 H2O --> C6H12O6 + 6 O2 + 6 H2O
Aerobic respiration is classified as:
A redox process
An example of a substrate-level phosphorylation that occurs during glycolysis is the transfer of a phosphate group from a phosphorylated intermediate to:
ADP
Thylakoid membranes are involved in __________ synthesis.
ATP
Which of the following is an end product of glycolysis?
ATP
In the electron transport chain, exergonic redox processes drive the endergonic reaction in which:
ATP is produced by phosphorylation of ADP
Metabolism describes
All of the above
The internal fluid found inside the chloroplast
Also called the stroma
During chemiosmosis, __________ are transferred from NADH and FADH2 to electron acceptor molecules, and the energy released is used to create a(n) __________ gradient across the inner mitochondrial membrane.
electrons; proton
The synthesis of ATP as a result of the light-dependent reactions of photosynthesis is an __________ reaction that is coupled to the diffusion of __________ down their concentration gradient.
endergonic; protons
NADH and FADH2 are the products of:
oxidation-reduction reactions
In aerobic respiration, glucose is completely:
oxidized to carbon dioxide
In aerobic respiration, the electrons associated with the hydrogen atoms in glucose are ultimately transferred to:
oxygen in a series of steps
In glycolysis, a six-carbon glucose molecule is converted to two three-carbon molecules of:
pyruvate
During aerobic respiration, oxygen is:
reduced
Aerobic respiration, anaerobic respiration, and fermentation:
release free energy
Glycolysis
results in the production of pyruvate and occurs in the cytoplasm
In a chloroplast, there is an outer and an inner membrane. The inner membrane encloses a fluid filled region called the:
stroma
The transfer of electrons from glucose to oxygen during aerobic respiration takes place in a stepwise fashion through a number of intermediates rather than by direct transfer. This is because:
the energy of the electrons can be used to make ATP
A drowning death would be most directly due to:
the lack of oxygen to accept hydrogen
Which of the following statements concerning decarboxylation reactions is FALSE?
they involve the removal of two protons and two electrons
The internal membrane system of the chloroplast is called a
thylakoid
The electron transport chain of photosynthesis is located in the:
thylakoid membrane
Chlorophyll and accessory photosynthetic pigments are associated with the:
thylakoid membranes
The role of the oxygen molecules required for aerobic respiration is:
to accept the low energy electrons at the end of the electron transport chain
The ability of some bacteria to produce lactate is exploited by humans to make:
yogurt and sauerkraut
Which of the following statements concerning anabolic reactions is FALSE?
They may split complex molecules into their components.
Chlorophyll:
absorbs red and blue light, and reflects green light.
The production of alcohol or lactate from pyruvate during __________ occurs as a means of regenerating __________ from __________.
fermentation; NAD+; NADH
Which process does not match the location in a typical eukaryotic cell?
glycolysis-mitochondrion
The process by which light energy is converted into the stored chemical energy of organic molecules is:
photosynthesis
When molecules are broken apart in cellular respiration
the energy released in respiration is channeled into molecules of ATP.
The role of the oxygen molecules required for aerobic respiration is:
to accept the low energy electrons at the end of the electron transport chain. ???
When one molecule of glucose is completely oxidized in aerobic respiration, the net amount of ATP produced is:
36-38
In the citric acid cycle, two acetyl CoA molecules are metabolized to:
4 CO2 + 6 NADH + 2 FADH2 + 2 ATP
In the electron transport chain, exergonic redox processes drive the endergonic reaction in which:
ATP is produced by phosphorylation of ADP.
In chemiosmosis, ATP is produced as hydrogen ions (protons) pass through:
ATP synthase ???
The overall reaction for the aerobic respiration of glucose is summarized as:
C6H12O6 + 6 O2 + 6 H2O --> 6 CO2 + 12 H2O + energy
The reactants of the Calvin cycle are:
CO2, ATP, and NADPH
For each glucose molecule that begins cellular respiration, the citric acid cycle must turn once.
False
Substrate level phosphorylation reactions occur in the process of chemiosmosis.
False
Oxygen produced by photosynthesis comes directly from:
H2O
The reactants of the light-dependent reactions are:
H2O, ADP, and NADP+
The correct operational sequence of the three processes listed below is: I. glycolysis II.ETP III. Krebs
I III II
Which of the following statements about the electron transport chain is true?
The proton gradient established during electron transport is a form of potential energy.
During the citric acid cycle, each acetyl group entering the cycle yields:
1 ATP, 3 NADH, and 1 FADH2.
Which of the following is not associated with the thylakoid membranes?
Calvin Cycle
Cellular respiration is most accurately described as a(n) __________ process.
Catabolic