Ch9&10 Flashcards
(36 cards)
In glycolysis, for each molecule of glucose oxidized to pyruvate,
Two molecules of ATP are used and four molecules of ATP are produced
Theodor W Engelmann illuminated a filament of algae with light that passed a prism, thus… He added aerobic bacteria and then noted in which areas the bacteria congregated
Bacteria congregated in these areas because these areas had the most oxygen being released
What compound provides a reducing power for the Calvin cycle reactions
NADPH
For which of the events listed below occurs in a light dependent reactions of photosynthesis
Light is absorbed and funneled to reaction-center chlorophyll a
In mitochondria chemiosmosis translocates protons from the matrix into the inter membrane space, whereas in chloroplasts, chemiosmosis translocates protons from
The stroma to the thylakoid space
One function of both alcohol fermentation and lactic acid fermentation is to
Oxidize NADH to NAD+
What are the products of non cyclic electron flow?
ATP and NADH
Which of the following statements best describes the relationship between photosynthesis and respiration
Photosynthesis stores energy in complex organic molecules while respiration releases it.
Which of the following sequences correctly represents the flow of electrons during photosynthesis
H20 -> NADPH -> Calvin Cycle
Photorespiration occurs when rubisco adds this to RuBP
Oxygen
The three major processes of cellular respiration are represented below. Process C represents
Oxidative phosphorylation
CAM plants keep stomata closed in daytime, thus reducing loss of water. They can do this because they
Fix CO2 into organic acids during the night and use that in day
In autotrophic bacteria, where are the enzymes located that can carry on carbon fixation (reduction of carbon dioxide to carbohydrate)
In enfolded plasma membranes
In the presence of oxygen, the three-carbon compound pyruvate can be catabolized in the citric acid cycle. First, however, the pyruvate (1) loses a carbon, which is given off as a molecule of CO2, (2) is oxidized to form a two-carbon compound called acetate, and (3) is bonded to coenzyme A.
These three steps result in the formation of:
Acetyl CoA, NADH, H+, CO2
What products can yeast cells create under anaerobic conditions
Ethanol and CO2
In photosynthetic cells, synthesis of ATP by the chemiosmotic mechanism occurs during
Both photosynthesis and respiration
What wavelength of light in the figure is most effective in driving photosynthesis?
420 mm
When oxygen is released as a result of photosynthesis, it is a direct by-product of
Splitting water molecules
In the thylakoid membrane, whats the main role of the pigment molecules in a photo system?
Transfer light energy to the reaction center chlorophyll
Which of the following produces the most ATP when glucose is completely catabolized to carbon dioxide and water
Oxidative phosphorylation
Which of the following statements describes the results of this reaction
Glucose + 6O2 + 6CO2 + 6H2O + Energy
Glucose is oxidized and O2 is reduced
What direct effect would a doubling of atmospheric CO2 concentration have on plants?
C3 plants will have a faster growth; C4 plants will be minimally affected
What happens at the end of the electron transport chain in the mitochondria?
4 electrons combine with a molecule of oxygen and 4 protons
What is the primary function of the Calvin cycle?
To synthesize simple sugars from CO2
