BIO 1201 LICATA EXAM 1 QUESTIONS
AND ANSWERS 100% CORRECT
4 classes of macromolecules - ANSWER-Carbohydrates, Proteins, lipids, nucleic acids
Macromolecule - ANSWER-Large molecules usually polymers built from monomers
Polymer - ANSWER-A substance with a structure consisting of a large number of units
banded together
Which of the 4 macromolecules is a polymer? - ANSWER-Carbohydrates, proteins, and
nucleic acids
What reaction synthesizes a polymer? - ANSWER-Dehydration reaction
What reaction would break a polymer down to a monomer? - ANSWER-Hydrolysis
-Lysis - ANSWER-Break down
Which macromolecules serve as building material? - ANSWER-Carbohydrates,
proteins, lipids
Name 2 Carbohydrate polymers - ANSWER-polysaccharides & disaccharides
Carbohydrate monomer? - ANSWER-Monosaccharides
What is the most common monosaccharide? - ANSWER-Glucose
List two factors monosaccharides are classified by - ANSWER-Location of carbonyl
group, number of carbons in the carbon skeleton
What would be the molecular formula of a 3-carbon sugar? - ANSWER-C3H6O3
Always a 1:2:1 ratio
Covalent Bonds - ANSWER-when atoms share electrons between their valence shells
Non-covalent Bonds - ANSWER-Hydrogen bonds
Van der waals
Ionic Bonds
Hydrophobic interactions
Hydrogen Bonds - ANSWER-Forms when a hydrogen atom bound to one
electronegative atom is also attracted to another electronegative atom
, Van Der Waals bond - ANSWER-Electrons are unevenly distributed, creating hot spots
of charge. Hot spots cause nearby atoms to be attracted. (lizards)
Ionic Bonds - ANSWER-Attraction between oppositely charged atoms
Tertiary Structure - ANSWER-How the alpha helix and beta pleated sheets link together
by non-covalent bonds
Quaternary Structure - ANSWER-More than 1 polypeptide
3 components of nucleotides - ANSWER-Pentose sugar, phosphate group, nitrogenous
base
DNA - ANSWER-Thymine, double stranded helix
RNA - ANSWER-Uracil, single stranded helix
Electronegativity - ANSWER-Tendency for atoms to attract electrons, aiming to fill its
valence shell
What is the simplest sugar? - ANSWER-Monosaccharide, a 3 carbon sugar
Which of the following is not a monosaccharide?
Ribulose
Glucose
Glyceraldehyde
Maltose - ANSWER-Maltose
Top 4 elements in the human body - ANSWER-Oxygen
Carbon
Hydrogen
Nitrogen
How do you form a disaccharide? - ANSWER-Dehydration reaction
Glycosidic bond - ANSWER-The covalent bond formed between two monosaccharides
or two sugars during a dehydration reaction
Dehydration Reaction - ANSWER-Builds up
Hydrolysis Reaction - ANSWER-Breaks down
Glycogen - ANSWER-Humans and other vertebrates store glycogen mainly in liver and
muscle cells
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