Covalent Bonds and Cellular Processes

How many covalent bonds can a hydrogen atom form?

• 1

• 2

• 3

• 4

Which bond results from the sharing of electrons?

• Ionic bond

• Covalent bond

• Hydrogen bond

• Van der Waals interaction

Why are some covalent bonds polar?

• Unequal sharing of electrons due to differences in electronegativity

• Equal sharing of electrons

• Transfer of electrons

• Attraction between temporary dipoles

Which of the following bonds is weakest?

• Covalent bond

• Ionic bond

• Hydrogen bond

• Van der Waals interaction

Why do water molecules form hydrogen bonds?

• High electronegativity of hydrogen

• Partial charges on oxygen and hydrogen

• Shared electrons between molecules

• Strong ionic attractions

What is the name of the reaction that builds polymers?

• Hydrolysis

• Dehydration synthesis

• Condensation reaction

• Both B and C

What breaks down polymers into monomers?

• Hydrolysis

• Condensation

• Dehydration synthesis

• Oxidation

What type of bond links amino acids in a protein?

• Ionic bond

• Hydrogen bond

• Peptide bond

• Disulfide bond

What determines the primary structure of a protein?

• Sequence of amino acids

• Alpha helices and beta sheets

• Hydrophobic interactions

• Disulfide bridges

Which functional group is hydrophobic?

• Methyl

• Hydroxyl

• Carboxyl

• Amino