AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

STRUCTURE OF NUCLEIC ACIDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What elements make up Proteins?
A
C, H, O, N, (S)
B
C, H, O, N
C
C, H, O, N, P
D
C, H, O
Explanation: 

Detailed explanation-1: -Proteins are one of the primary constituents of living matter. They consist of long chains of amino acids, which are bonded together by peptide linkages and thus called polypeptides. There are about 20 amino acids, and the atoms most prevalent in these are carbon, hydrogen, oxygen, nitrogen, and sulfur.

Detailed explanation-2: -By convention, protein sequences are written from the end with the free-NH3+ group (the N terminus ) to the end with the free-COO-group (the C terminus ). Shown below is the structure formed by three amino acids linked by peptide bonds.

Detailed explanation-3: -Proteins are made of carbon, hydrogen, oxygen, and nitrogen (CHON). Nucleic acids such as DNA and RNA contain carbon, hydrogen, oxygen, nitrogen, and phosphorus (CHON P). Name the 4 main elements that make up 95% of an organism.

Detailed explanation-4: -This end of the protein is the N terminus and the last amino acid of the chain has a free carboxy or C terminus. Protein synthesis thus initiates with the amino terminus and proceeds towards the C terminus.

There is 1 question to complete.