BS 161 Exam 1 UPDATED Questions and CORRECT Answers

BS 161 Exam 1 UPDATED Questions and
CORRECT Answers
Hydroxyl - CORRECT ANSWER - Polar, form hydrogen bonds and contributes to making
molecules soluble in water


Carbonyl - CORRECT ANSWER - Polar, contributes to making molecules soluble in
water


Carboxyl - CORRECT ANSWER - Charged, often becomes ionized by accepting H+ to
form -NH3, considered basic


Sulfhydryl - CORRECT ANSWER - Polar



Phosphate - CORRECT ANSWER - Charged, frequently ionize, releasing H+, considered
acidic, involved in biological storage and release of energy


Methyl - CORRECT ANSWER - Nonpolar



Four major classes of macromolecules - CORRECT ANSWER - Proteins
Carbohydrates
Lipids
Nucleic Acids


Types of proteins - CORRECT ANSWER - Functional
Structural


Types of carbohydrates - CORRECT ANSWER - Starch/Glycogen
Cellulose

, Chitin


Types of lipids - CORRECT ANSWER - Fats
Phospholipids
Prostaglandins
Steroids
Terpenes


Types of nucleic acids - CORRECT ANSWER - DNA
RNA


What is the cell theory? - CORRECT ANSWER - All organisms are composed of one or
more cells, and the life processes of metabolism and heredity occur within these cells
Cells are the smallest living things, basic units of organization of all organisms
Cells arise only by division of a previously existing cell


What 4 elements make up 96% of living matter? - CORRECT ANSWER - Carbon
Oxygen
Hydrogen
Nitrogen


Nonpolar covalent bonds - CORRECT ANSWER - Sharing of electron pairs; atoms share
the electron equally


Polar covalent bonds - CORRECT ANSWER - Sharing of electron pairs; atoms do not
share the electron equally
Based off electronegativity: atoms' attraction for the electrons in a covalent bond