Which of the following CANNOT be repaired by nucleotide excision repair (NER)?
A. ultraviolet-induced damage
B. chemically modified bases
C. missing bases
D. mismatched bases
E. pyrimidine dimers
D. mismatched bases
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Photoheterotrophs are best described as organisms that obtain energy to make ATP
A) from organic compounds but use sunlight to produce carbon sources. B) and organic compounds from sunlight. C) from sunlight but cannot make organic compounds from CO2. D) from some forms of chemicals. E) from organic compounds.
The series of steps used to connect an organism to a disease are known as
A. Pasteur's postulates. B. Lister's aseptics. C. Linnaeus taxonomics. D. Koch's postulates.
Flowers that smell like rotten meat, dung or decaying matter are most likely pollinated by
a. moths. b. butterflies. c. hummingbirds. d. bees. e. flies.
When membrane-bound receptors like HER2 bind to molecules outside of a human cell, they must move laterally within the bilayer and also bind to a second HER2 receptor, forming a dimer (2-part molecule), in order for the signal to be further transferred inside the cell through the membrane. This is possible because the cell membrane is
A. a selectively permeable barrier. B. both selectively permeable and a fluid mosaic. C. hydrophobic. D. rigid like a cell wall. E. a fluid mosaic.