CHAPTER 2 (PRACTICE QUIZ)

What is the field of chemistry dedicated to studying how atoms interact and react with each other?

• Biochemistry

• Geology

• Botany

• Physics

What is the characteristic number of protons in the nucleus of any atom in an element called?

• Isotope

• Electronegativity

• Atomic Number

• Atomic Mass

Which type of bond is formed when two atoms of similar electronegativity share electrons?

• Ionic Bond

• Hydrogen Bond

• Non-Polar Covalent Bond

• Polar Covalent Bond

What is the movement of water molecules across a membrane in order to reach equilibrium known as?

• Active Transport

• Facilitated Diffusion

• Osmosis

• Passive Diffusion

What is the main function of the cell membrane?

• To keep pathogens out

• To remove waste from the cell

• All of the above

• To get nutrients into the cell

Which type of solution has a higher concentration of solutes outside the cell than inside, causing water to flow out of the cell?

• Isotonic Solution

• Hypotonic Solution

• Hypertonic Solution

• Neutral Solution

What is the lipid tail made of in phospholipids?

• Cholesterol

• Glycerol

• Phosphate Head Group

• Fatty Acid Tails

Which type of transport requires energy as molecules are working against the concentration gradient?

• Osmosis

• Active Transport

• Facilitated Diffusion

• Passive Diffusion

What is the weak attraction between molecules with partial charges known as?

• Polar Bond

• Hydrogen Bond

• Covalent Bond

• Ionic Bond

Which component of the cell membrane helps to provide rigidity to the membrane?

• Integral Proteins

• Membrane Proteins

• Cholesterol

• Phospholipids