Biology Semester Exam Review Fall 2024

Atoms are not composed of ________.

• chemical bonds
• protons
• neutrons
• electrons

The electrons of an atom ______.

• occupy the space surrounding the nucleus
• are found in the nucleus along with protons
• have a positive charge
• are attached to the positive charge of neutrons.

Ionic bonds form between particles that have ________.

• opposite charges
• no charges
• the same charge
• neutral charges

The bond formed when two atoms share a pair of electrons is called a ________.

• covalent bond
• hydrogen bond
• ionic bond
• water bond

A molecule that has a partial positive charge on one side and a partial negative charge on the other side is called a(n) ________.

• polar molecule
• nonpolar molecule
• charged molecule
• ion

Attractions between water molecules are called ___________.

• hydrogen bonds
• covalent bonds
• ionic bonds
• polar bonds

Which of the following is not a large biomolecule?

• ice
• carbohydrate
• lipid
• nucleic acid

Refer to the illustration above, what is this molecule?

• carbohydrate
• lipid
• nucleic acid
• protein

Which of the following is a carbohydrate?

• sucrose
• ATP
• steroid
• wax

Which molecules are most closely related to lipids?

• long chains of hydrogen and carbon
• amino acids
• nucleotides
• sugars