AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following are true of RNA?
A
RNA is single stranded
B
RNA has the 5 carbon sugar Ribose
C
RNA has the the Nitrogenous Bases Adenine; Uracil; Guanine; Cytosine.
Explanation: 

Detailed explanation-1: -Three of the four nitrogenous bases that make up RNA-adenine (A), cytosine (C), and guanine (G)-are also found in DNA. In RNA, however, a base called uracil (U) replaces thymine (T) as the complementary nucleotide to adenine (Figure 3).

Detailed explanation-2: -Complete answer: RNA or ribonucleic acid is the genetic material of many organisms like viruses. It consists of nucleotides that are composed of 3 elements, particularly sugar molecules, element bases, and phosphate. Sugar utilized in RNA is ribose sugar.

Detailed explanation-3: -RNA consists of four nitrogenous bases: adenine, cytosine, uracil, and guanine. Uracil is a pyrimidine that is structurally similar to the thymine, another pyrimidine that is found in DNA. Like thymine, uracil can base-pair with adenine (Figure 2).

Detailed explanation-4: -RNA Structure RNA is typically single stranded and is made of ribonucleotides that are linked by phosphodiester bonds. A ribonucleotide in the RNA chain contains ribose (the pentose sugar), one of the four nitrogenous bases (A, U, G, and C), and a phosphate group.

Detailed explanation-5: -Uracil (U) is one of the four nucleotide bases in RNA, with the other three being adenine (A), cytosine (C) and guanine (G). In RNA, uracil pairs with adenine. In a DNA molecule, the nucleotide thymine (T) is used in place of uracil.

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