All High School Biology Resources
Example Questions
Example Question #2 : Understanding Differences With Dna
Which of the following statements are true?
RNA is double stranded, while DNA is single stranded.
DNA contains phosphates, while RNA does not.
RNA and DNA have no structural differences whatsoever.
RNA contains uracil, while DNA contains thymine.
The 5-C sugar is exactly the same in both RNA and DNA.
RNA contains uracil, while DNA contains thymine.
RNA is different than DNA in that it 1) is single stranded (DNA is double stranded), 2) contains uracil (DNA contains thymine instead), and 3) contains a ribose sugar (DNA contains a deoxyribose sugar). And since both DNA and RNA are made up of nucleotides, they will both contain phosphates.
Example Question #1 : Understanding Differences With Dna
Which of the following characteristics best describe RNA?
I. It contains base pairs C, G, U, and A
II. It is double stranded
III. It stores hereditary information
IV. It is responsible for transcription of proteins
V. It is synthesized from DNA
II, IV, and V
I, II, and III
I, IV, and V
III and IV
V only
I, IV, and V
RNA is composed of the sugar ribose and contains the nitrogenous bases C, G, U, and A. RNA is single stranded and is essential for gene expression, transcription and translation of proteins. RNA is synthesized by DNA; only DNA contains hereditary information.
Example Question #11 : Rna Structure
Which DNA base is replaced by uracil in RNA?
Thymine
Adenine
Guanine
Cytosine
Thymine
DNA is made up of Adenine, Thymine, Guanine, and Cytosine. RNA has these same bases, except in RNA, there is no Thymine. Instead, Uracil is found.
Example Question #21 : Rna
DNA contains the following nitrogenous bases: adenine, guanine, thymine, and cytosine. RNA contains which of the following sets of nitrogenous bases?
Adenine, guanine, cystine, and thymine
Adenosine, guanine, cystine, and uracil
Adenine, guanine, cytosine, and uracil
Adenine, guanine, cytosine, and uracil
Adenine, guanine, cytosine, and uracil
Thymine is exclusively present in DNA. Uracil replaces thymine in RNA; thus, RNA contains the following four nitrogenous bases: adenine, guanine, cytosine, and uracil.
Example Question #12 : Rna Structure
Which of the following is not a component of RNA?
Ribose
Thymine
Cytosine
Adenine
Thymine
RNA’s nucleotide components consist of a phosphate group, ribose, and nitrogenous bases. RNA’s nitrogenous bases include the purines adenine and guanine, and the pyrimidines cytosine and uracil. Thymine is a pyrimidine found exclusively in DNA.
Certified Tutor
Certified Tutor