Key Words & General

Question 1

What is a covalent bond?

Answer 1

A strong chemical bond where 2 atoms share a pair of electrons.

Question 2

What is an ionic bond?

Answer 2

A moderate chemical bond formed by the attraction between two oppositely-charged ions.

Question 3

What is a hydrogen bond?

Answer 3

A weak chemical bond between the partially positive charge on a hydrogen atom and the partially negative charge on the oxygen atom of an adjacent molecule.

Question 4

What is a glycosidic bond?

Answer 4

A covalent bond between a carbohydrate molecule and a hydroxyl group on another molecule, resulting from a condensation reaction.

Question 5

What is a peptide bond?

Answer 5

A covalent bond between two amino acids, resulting from a condensation reaction.

Question 6

What is a phosphodiester bond?

Answer 6

A covalent bond between two nucleotides, resulting from a condensation reaction.

Question 7

What is a monomer?

Answer 7

A small repeating unit which join together to form larger molecules (polymers).

Question 8

Name biologically important polymers.

Answer 8

Glycogen
Starch
Cellulose

Protein

DNA
RNA