Exam III Flashcards
Ch. 6 & 7
What does light excites in photosintetic pigments?
Electrons
Chlorophyll A absorbs which color of colors of light?
red and violet
In Engleman’s 1882 experiment, why did bacteria cluster in red or violet bands of the rainbow?
Algae photosynthesis best at those wavelengths, producing needed oxygen for the bacteria
What do plants need to carry out photosynthesis?
CO2 and H2O
The products of the light dependent reactions of photosynthesis includes:
ATP, NADPH, and O2
The light dependent reactions occur here:
the thylakoid membrane
The products of light independent reactions of photosynthesis are:
ADP, NADP+, and Glucose
The light independent reactions occur here:
The stroma
The plant cells are capable of:
photosynthesis, glucose breakdown, aerobic respiration, and both photosynthesis and glucose breakdown
When molecules are broken apart in respiration, the energy released is:
is channeled into molecules of ATP
The correct sequence for the respiration process is:
glycolysis then Krebs and finally electron transfe
The greatest number of ATP molecule is produced in:
aerobic electron transfer.
Glycolysis depends on a continuous supply of:
NAD+
What is necessary for glycolysis to begin?
an input of energy from ATP
Glycolysis results in:
production of pyruvate and occurs in the cytoplasm
How many ATP molecules( NET yield) are produced per molecule of glucose degraded during glycolysis?
two
The Krebs cycle takes place in the:
mitochondria
The breakdown of pyruvate in the Krebs cycle results in the release of:
energy and carbon dioxide
To breakdown a glucose molecule completely requires how many passes through the Krebs cycle?
2
Which process is a transition from glycolysis to the Krebs cycle?
acetyl CoA formation
When glucose is used as the energy source, the largest amount of ATP is produced is in:
Electron Transfer Phosphorylation
During Electron Transfer Phosphorylation, which ion accumulates in the outer compartment of the mitochondria?
hydrogen
The ultimate electron acceptor in aerobic respiration is:
O2
Hydrogen ions diffuse from the outer to inner compartment of the mitochondria through what molecule?
ATP synthase
How many ATP’s form during the 3rd stage of aerobic respiration?
32
Yeast fermentation produces
ethanol and CO2
under anaerobic conditions, muscle cells produce:
lactate
If fermentation follows glycolysis then:
the two NADH molecules produced during glycolysis will be used to reduce pyruvate to either lactate or ethanol and CO2
Fermentation pathways make no more ATP beyond the small yield from glycolysis. The remaining reactions serve to regenerate:
NAD+
Excess glucose in the human diet can result in the accumulation of:
Fat
Glucagon prompts what organs to convert glycogen to glucose?
Liver
When fats are broken down as energy sources, their components enter:
glycolysis and the Krebs cycle
When proteins are used as energy sources, their breakdown subunits usually enter:
the Krebs cycle
