OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Amino acids combine to make proteins.
|
|
|
Glucose molecules combine to make nucleic acids.
|
|
|
Nucleic acids combine to make starch.
|
|
|
Proteins combine to make glucose.
|
Detailed explanation-1: -Answer. Explanation: Most macromolecules are made from single subunits, or building blocks, called monomers. The monomers combine with each other via covalent bonds to form larger molecules known as polymers.
Detailed explanation-2: -When connected together by a series of peptide bonds, amino acids form a polypeptide, another word for protein.
Detailed explanation-3: -Amino acids are joined together by peptide bonds (dehydration synthesis) (3.13, pg 43). Polypeptide chains are strings of amino acids, joined by peptide bonds. Proteins are formed by twisting up one or more poly peptide chains. It is the shape, or conformation, of the protein that gives it its properties.
Detailed explanation-4: -All proteins are made up of different arrangements of the same 20 kinds of amino acids. Amino acids are the monomers that make up proteins. Each amino acid has the same fundamental structure, which consists of a central carbon atom bonded to an amino group (–NH2), a carboxyl group (–COOH), and a hydrogen atom.
Detailed explanation-5: -Amino acids are attached to other amino acids by covalent bonds, known as peptide bonds, which are formed by dehydration synthesis reactions. The carboxyl group of one amino acid and the amino group of the incoming amino acid combine, releasing a molecule of water and forming a peptide bond (Figure 3.7).