BIOLOGY
NUCLEIC ACIDS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
4
|
|
|
3
|
|
|
2
|
|
|
1
|
Detailed explanation-1: -DNA is made up of four building blocks called nucleotides: adenine (A), thymine (T), guanine (G), and cytosine (C).
Detailed explanation-2: -Because there are four naturally occurring nitrogenous bases, there are four different types of DNA nucleotides: adenine (A), thymine (T), guanine (G), and cytosine (C).
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.
Detailed explanation-4: -The five bases that are found in nucleotides are often represented by their initial letter: adenine, A; guanine, G; cytosine, C; thymine, T; and uracil, U. Note that A, G, C and T occur in DNA; A, G, C and U occur in RNA.
Detailed explanation-5: -Each nucleotide is composed of a pentose sugar, a phosphate group, and one out of four nitrogenous bases (adenine, thymine, cytosine, and guanine). This means that a DNA molecule can have four types of nucleotides which differ only in the type of nitrogenous bases they have.