Module 1 Terms - Elements of Life

Question 1

Covalent bond

Answer 1

When a pair of electrons are shared between two atoms

Question 2

Polar covalent bond

Answer 2

A covalent bond where electrons are shared unequally between two atoms

Question 3

Nonpolar covalent bond

Answer 3

A covalent bond where electrons are shared equally between two atoms

Question 4

Ionic bond

Answer 4

A chemical bond in which two ions with opposite electrical charges associate with each other because of the differences in charge

Question 5

Proteins

Answer 5

Organic molecules that do much of the cell’s work. They speed up chemical reactions and provide structural support for the cell. Composed of amino acids

Question 6

Nucleic acids

Answer 6

Responsible for encoding and transmitting genetic information. Made up of repeating subunits called nucleotides

Question 7

Carbohydrates

Answer 7

Organic molecules that store energy in their chemical bonds. Sometimes attached to proteins on the surface of cells, and make up the external layer of the cells in plants, algae, and bacteria

Question 8

Lipids

Answer 8

Organic molecules that are hydrophobic