A/P Ch 2 BioChem Quiz

Which two types of particles are present in equal numbers in an atom, but not in an ion?

• protons and electrons
• protons and neutrons
• inner-shell electrons and out-shell electrons
• protons and inner-shell electrons

Household bleach has a pH between 12 and 13. From this information which of the following best describes the bleach solution?

• The solution is acidic, meaning that it has more hydrogen than hydroxide ions
• The solution is basic, meaning that it has fewer hydrogen ions than hydroxide ions.
• The solution is neutral, meaning that it has equal numbers of hydrogen and hydroxide ions
• The solution is a buffer that reacts with solutions containing high concentrations of hydrogen ions.

Several different amino acids join together to form a protein. How do any two types of amino acids differ from each other?

• The number of amino groups in the molecule
• The number of carboxyl groups in the molecule
• The chemical structure of the R group in the molecule
• The number of chemical bonds formed by the central carbon atom

Which type of macromolecule has the function of storing and transmitting hereditary or genetic information?

• Lipid
• Carbohydrate
• Protein
• Nucleic Acid

What event changes an atom to an ion?

• the sharing of electrons with another atom
• the gain or loss of one or more electrons
• the gain or loss of one or more neutrons
• a chemical reaction that forms a molecule

What subatomic particle changes in the creation of isotopes?

• proton
• electron
• neutron
• valence electrons

In the sentence above which word completes blank 1 the best?

• oxygen
• hydrogen
• peptide
• ionic

In the sentence above which word completes blank 2 the best?

• oxygen
• hydrogen
• Carbon dioxide
• water

In the sentence above which word completes blank 3 the best?

• protein
• nucleic acid
• carbohydrate
• lipid

Which part of the atom is responsible for chemical bonding?

• proton
• netron
• electron