A molecule of ribose is shown below. On which carbon is a phosphate attached in

Question

A molecule of ribose is shown below. On which carbon is a phosphate attached in RNA? A. 5 B. 4 C. 2 D. 1 E. None of the above The unique sequence of bases in a nucleic acid is called the _____ structure. A. ionic B. primary C. secondary D. tertiary E. quaternary The structural formulas of amino acids are the same except for the _____. A. ammonium group B. alpha carbon C. carboxylate group D. R group E. hydrogen bonding What is the process in which the DNA double helix unfolds, and each strand serves as a template for the synthesis of a new strand? A. transcription B. complementation C. translation D. replication E. restriction Codons are base pair sequences that _____. A. signal the start of DNA synthesis B. signal the end of DNA synthesis C. code for amino acids D. signal the start of RNA synthesis E. code for one or more bases in mRNA. The nucleotide below could be incorporated into what type of molecule? A. RNA B. DNA C. both DNA and RNA

Explanation / Answer

(9) (A) In both RNA and DNA phosphate group is attached to 5th carbon.

(10) (B) The unique sequence of bases in nucleic acids is called primary structure.

(11) (D) R group is only differ in different amino acids

(12) (D) Replication

(13) ((C) Code for amino acids

(14) It is present in only DNA. Thought the base,cytosine is present in both DNA and RNA, the sugar given is de-oxyribose which is present only in DNA.

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