An organism that produces catalase enzyme is protected from the harmful effects of
A) singlet oxygen (1O2).
B) hydroxyl radical (HO.).
C) peroxide anion (O22-).
D) superoxide radical (O2-).
E) molecular oxygen (O2).
C
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Which of these statements is/are TRUE?
A) In general, prokaryotic organisms can grow at higher temperatures than eukaryotic organisms. B) The most thermophilic prokaryotes are species of Archaea. C) Nonphototrophic organisms are able to grow at higher temperatures than phototrophic organisms. D) All of the statements are true.
What type of fatty acids include omega-3 and omega-6?
What will be an ideal response?
How does crossing over introduce variation in meiosis?
a. It causes homologous chromosomes to be grouped differently. b. It causes eggs and sperm to unite in different ways c. It causes all the homologous chromosomes to find new partners. d. It increases the amount of DNA in the nucleus. e. It positions alleles next to each other that previously were not together.
Which of the following is used to treat shingles?
A) penicillin B) sulfonamide C) trifluridine D) fungicide E) acyclovir