Which of the following is the initiator codon?
A. UGA
B. UAG
C. AUG
D. UAA
Answer: C
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Wings of birds and butterflies have similar functions, but different evolutionary origins. They are:
A. physiological structures. B. homologous structures. C. analogous structures. D. phylogenetic structures.
Which of the following molecules is a purine nitrogenous base?
A) 2 B) 5 C) 12 D) 13
A laboratory recipe lists sucrose, an ammonia compound, calcium salts and a buffer as the ingredients for a microbiologic medium. These are added to water and autoclaved. What type of medium does this protocol produce?
A) defined agar B) defined broth C) complex broth D) reducing agar E) complex enrichment broth
What is the function of NADH and FADH2 in cellular respiration?
a. They help break down glucose b. They carry electrons to the electron transport chain c. They oxidize pyruvate d. They produce ATP e. They assist in making acetyl groups