Oxygen is required for ____________ to take place.
A. the electron transfer system
B. light-dependent reactions
C. light-independent reactions
D. glycolysis
A. the electron transfer system
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Most eukaryotic genes are collinear
A. True B. False C. It is unknown at this time
Mitochondria arose from an endosymbiotic relationship between a eukaryotic cell and an aerobic bacteria. Which statement supports this theory?
a. Fossilized mitochondria are older than the oldest fossilized eukaryotes. b. Mitochondria can produce ATP outside of a eukaryotic cell. c. A mitochondrion has its own DNA in the form of a single circular chromosome, like bacteria. d. A mitochondrion has a only one outer membrane. e. A mitochondrion can survive indefinitely when removed from a eukaryotic cell.
Which of the following statements best defines an altruistic act?
A. benefits the performer and another individual B. benefits another individual at some cost to the performer C. benefits another, related individual at some cost to the performer D. imposes a cost on the performer and another individual E. imposes a cost on the performer without benefiting another individual
The hydrophobic tails of a phospholipid bilayer are oriented toward the
A) cytoplasm of the cell. B) extracellular fluid surrounding the cell. C) interior of the plasma membrane (i.e., toward one another). D) both the extracellular fluid and cytoplasm. E) interstitial fluid.