Biology Chapter 3 Study Guide

Question 1

What three things are atoms composed of?

Answer 1

Protons, neutrons, and electrons

Question 2

What charge do protons have and where are they found?

Answer 2

Positive charge and found in the nucleus

Question 3

What is the charge of neutrons and where is it found?

Answer 3

No charge and are found in the nucleus

Question 4

What is the charge of electrons and where is it found?

Answer 4

Negative charge and found outside the nucleus

Question 5

What is a covalent bond?

Answer 5

Sharing of electrons

Question 6

What is an ionic bond?

Answer 6

Formed when the charges of positive and negative ions hold the atoms together

Question 7

What is a hydrogen bond?

Answer 7

When a partial positive hydrogen of one molecule is attracted to the partial negative atom of another molecule.

Question 8

Which macromolecule does not dissolve in water?

Answer 8

Lipids

Question 9

What are the three monosaccharides?

Answer 9

Glucose, fructose, and galactose

Question 10

What are the three polysaccharides?

Answer 10

Starch, glycogen, and cellulose