What happens during nucleotide excision repair?
a. A mismatch mutation is repaired.
b. A nuclease removes the damaged DNA.
c. DNA polymerase joins the repaired DNA together.
d. DNA ligase adds new nucleotides to the repaired DNA strand.
e. DNA is damaged.
b
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Although Epsilonproteobacteria make up the smallest of the five proteobacterial classes, species such as Helicobacter and Campylobacter are responsible for significant human disease that range from mild to severe.
Answer the following statement true (T) or false (F)
The main structural component of a plant cell wall is
A) extracellular matrix B) cellulose C) cytoskeleton D) middle lamella E) plasmodesmata
Complementary base pairs are held together by
A) disulfide bonds. B) peptide bonds. C) covalent bonds. D) hydrogen bonds. E) ionic bonds.
The food-borne disease that involves neurotoxin is
A) All of these choices are correct B) Clostridium perfringens gastroenteritis C) Botulism D) Bacillus cereus intoxication E) Gastrointestinal anthrax