Exam 2: A: The Chemical Basis of Life

A few inorganic compounds contain both C-C bonds but no inorganic compound has a C-H bond.

Hydrogen bonds between atoms do not form molecules or compounds.

Radioactivity can cause an atom of one element to change to that of another element.

Atoms become positively charged by gaining protons.

According to the general formula,in exchange reactions,the number of reactants and the number of products are usually equal.

Chaperone proteins assist in the proper folding of other proteins so they can have the correct functional shape.

Ions gain or lose electrons to try to attain four pairs of electrons in their outermost energy level.

Fats,steroids,and prostaglandins are all considered lipids.

There cannot be an electrically neutral ion.

An isotope of an element contains the same number of neutrons but different numbers of protons.

Biochemistry involves the chemical makeup of living organisms and the underlying process of life activities.

Fats are composed of three fatty acids joined to a molecule of glycerol.

Saturated fats are more likely than unsaturated fats to be liquid at room temperature.

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

A substance that resists changes in pH when acids or bases are added is called a buffer.

If one side of the DNA molecule was CCTAGGC,the opposite side of the molecule would be CCTAGGC.

The function of transfer RNA is to select and adhere to a specific amino acid and place it in the correct sequence in the primary protein strand.

Radiation results from the breaking apart of the nucleus of an atom.

Gamma radiation has less mass than alpha or beta radiation.

Water acts as a very effective solvent.