Question

Which of the following statements about DNA and RNA is incorrect?
A) RNA contains the pentose sugar ribose while DNA contains deoxyribose.
B) They both contain nitrogenous bases
C) Both contain long chains of amino acids.
D) Both take part in protein synthesis.

Answer 1

C- DNA is not made of amino acids

Answer 2

The incorrect statement about DNA and RNA are both contain long chains of amino acids (Option C).

• Both DNA and RNA are nucleic acids, whose building blocks are nucleotides.

• Amino-acids are the building blocks of proteins.

• A nucleotide is composed of a nitrogenous base, a sugar molecule (deoxyribose in DNA and ribose in RNA), and a phosphate group.

• In DNA, there are four types of nitrogenous bases: adenine (A), thymine (T), guanine (G), and cytosine (C).

• In RNA, thymine (T), is replaced by uracil (U).

In conclusion, the incorrect statement about DNA and RNA are both contain long chains of amino acids (Option C).

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