AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

STRUCTURE OF NUCLEIC ACIDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which element is not found in nucleic acids
A
carbon
B
sulfur
C
hydrogen
D
phosphorus
Explanation: 

Detailed explanation-1: -In fact, sulfur occurs in all the major classes of biomolecules, including proteins, sugars, nucleic acids, vitamin cofactors and metabolites, and is required by all living organisms.

Detailed explanation-2: -Unlike proteins, nucleic acids contained no sulfur.

Detailed explanation-3: -The basic elements that compose DNA are five atoms: carbon, nitrogen, oxygen, phosphorous, and hydrogen. A nucleoside is the combination of these atoms into two structures, a five-carbon sugar molecule called deoxyribose, which is responsible for the name of DNA, and a phosphate group.

Detailed explanation-4: -Each nucleic acid contains four of five possible nitrogen-containing bases: adenine (A), guanine (G), cytosine (C), thymine (T), and uracil (U).

There is 1 question to complete.