Codons are part of the molecular structure of _____

A) a protein
B) mRNA
C) tRNA
D) rRNA


Answer: B

Biology & Microbiology

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If the number of chromosomes in an animal's gametes is 20, then a somatic cell from that animal

would contain ____ chromosomes.

a. 5 b. 10 c. 20 d. 40 e. 80

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What organism accounts for a major proportion of the ocean's organic matter and oxygen production?

a. Chemosynthetic bacteria b. Obligate anaerobes c. Cyanobacteria d. Plycoerythrin

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Human, gorilla, and chimpanzee DNA sequences are approximately __________ identical

a. 28% b. 48% c. 68% d. 88% e. 98%

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Which of the following statements is not true about the possible fates of glyceraldehyde 3-phosphate?

(a) It can be exported from the chloroplast to the cytosol for conversion into sucrose. (b) It can be used to make starch, which is stored inside the stroma of the chloroplast. (c) It can be used as a precursor for fatty acid synthesis and stored as fat droplets in the stroma. (d) It can be transported into the thylakoid space for use as a secondary electron acceptor downstream of the electron-transport chain.

Biology & Microbiology