Biology Chapter 3 Study Guide Flashcards
What three things are atoms composed of?
Protons, neutrons, and electrons
What charge do protons have and where are they found?
Positive charge and found in the nucleus
What is the charge of neutrons and where is it found?
No charge and are found in the nucleus
What is the charge of electrons and where is it found?
Negative charge and found outside the nucleus
What is a covalent bond?
Sharing of electrons
What is an ionic bond?
Formed when the charges of positive and negative ions hold the atoms together
What is a hydrogen bond?
When a partial positive hydrogen of one molecule is attracted to the partial negative atom of another molecule.
Which macromolecule does not dissolve in water?
Lipids
What are the three monosaccharides?
Glucose, fructose, and galactose
What are the three polysaccharides?
Starch, glycogen, and cellulose
