Unit1 Practice quiz

What is the electrical charge of each of the following particles in an atom: electron, neutron and proton?

• 0, -, +

• -, 0, +

• +, 0, -

• +, -, 0

What is in the nucleus of an atom?

• Protons and electrons

• Neutrons and Protons

• Protons, electrons and neutrons

• Electrons and neutrons

What forms that chemical bond between atoms in molecules and compounds?

• Proton charge

• Electron interactions

• Nuclear fusion

• Static electricity

Carbon is in most biomolecules because of its ability to form many different chemical bonds.

• True

• False

What are macromolecules?

• Huge polymers

• Small molecules

• Medium sized molecules

• Inorganic molecules

The four functions of lipids are: Insulation, cell structure, long term energy and cell signaling.

• True

• False

What is the function of nucleic acids?

• pH maintenance

• Keep cell clean

• Storage of instructions for all cell functions

• d. DNA protection

Carbohydrates only have one structure: rings.

• True

• False

Which of the following statements is true about nucleotides?

• Nucleotides are the monomer of nucleic acids with three parts

• Nucleotides are hydrophobic

• DNA has nucleotides while RNA does not

• d. Nucleotides connect into proteins

What does the quaternary structure of a protein show?

• Its shows the smallest atoms of the protein

• b. It shows the way the subunits of a protein are connected

• It demonstrates the way the protein will behave in water

• It shows the way a protein will fold