Question
Environmental Microbiology Question on Structure of DNA and RNA
Which of the following statement(s) is/are CORRECT?
A
DNA is composed of nucleotides.
B
Five types of nitrogenous bases occur in DNA.
C
Each phosphate is attached to two deoxyribose units in a single strand of DNA.
D
The ratio of adenine to guanine is always 1:1 in a double stranded DNA.
Answer
DNA is composed of nucleotides.
Explanation
Solution
The correct answer is (A and C) : DNA is composed of nucleotides. AND Each phosphate is attached to two deoxyribose units in a single strand of DNA.