Exam 2: A: The Chemical Basis of Life

The joining of amino acids in a peptide bond is an example of the process of hydrolysis.

Proteins can be divided into functional proteins and structural proteins.

The ability of proteins to perform their function depends on their shape.

A neutral atom that has 22 protons must have 22 neutrons.

A solution with a pH of 6 has 100 times more hydrogen ions than a solution with a pH of 4.

A double covalent bond involves the sharing of 2 electrons.

A saturated fat is saturated with hydrogen atoms.

Phospholipids have a fat-soluble end and a water-soluble end.

Acids release protons in solution.

Glucose is a hexose and ribose is a pentose.

The pH scale indicates the degree of acidity or alkalinity of a solution.

The term atomic weight refers to the average mass number for a particular element based on the typical proportions of different isotopes found in nature.

Consider an atom that has an atomic mass of 18.For it to be electrically neutral,it must have 18 electrons.

Electrovalent and ionic bonds are the same.

The mass of a proton is almost exactly equal to the mass of an electron.

RNA and DNA have the same pyrimidine bases but different purine bases.

Sugars and starches are both considered to be carbohydrates.

A type of chemical reaction called dehydration synthesis is an example of an anabolic reaction.

Electrolytes dissociate to form ions.

The nucleus of the atom will always have a positive charge.