MCB 150 Final Exam Questions and
Answers 100% PASS
isomer - CORRECT ANSWER-two or more molecules w/ the same chemical
formula but different structures, characteristics, bonding relationships
stereoisomers - CORRECT ANSWER-have identical bonding relationships, but
the spatial positioning of their atoms differ
cis isomer - CORRECT ANSWER-Carbon chain is found on the same side of the
C=C double bond.
trans isomer - CORRECT ANSWER-carbon chain found on opposite side
condensation reaction - CORRECT ANSWER-reaction in which two or more
molecules are combined into one larger molecule by covalent bonding, with the
loss of a small water molecule
hydrolysis reaction - CORRECT ANSWER-chemical reaction that adds water to
break apart other molecules
all carbohydrates contain... - CORRECT ANSWER-carbon, hydrogen, and oxygen
,carbohydrates - CORRECT ANSWER-monomer= monosaccrihdes (simple sugars
like pentose or hexose)
polymer= polysaccrihdes
energy stored within the bonds
glycosidic bond - CORRECT ANSWER-covalent bond between 2 sugar molecules
via dehydration reaction
energy storage - CORRECT ANSWER-starch= plant cells
glycogen= animal cells
lipids - CORRECT ANSWER--have no monomers bc they are not polymers
-hydrophobic molecules composed mainly of carbon, hydrogen, oxygen
-nonpolar, insoluble in water
triglycerides - CORRECT ANSWER-fats formed when glycerol bonds to 3 fatty
acids. a 3 carbon molecule w/ one hydroxyl group
saturated fatty acid - CORRECT ANSWER-fatty acid in which all carbons are
linked by single covalent bonds, solid at room temp
unsaturated fatty acids - CORRECT ANSWER-fatty acids containing one or more
carbon double bonds. (fat stores energy to make ATP) liquid at room temp
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,phospholipid - CORRECT ANSWER-a lipid that contains phosphorus and that is
a structural component in cell membranes (backbone)
fatty acid chain - CORRECT ANSWER-hydrophobic tails
phosphate group - CORRECT ANSWER-hydrophilic head
steroid - CORRECT ANSWER--lipid containing 4 interconnected rings of carbon
atoms
-hormone in plants and animals
-hydroxyl group attached
amino acids - CORRECT ANSWER--monomer= AA(CHNOPS)
-polymer= proteins
amino group accepts hydrogen and has a + charge, while carboxyl loses that
hydrogen and has a - charge
peptide bond - CORRECT ANSWER-covalent bond between carboxyl and amino
group that links amino acids in a polypeptide
N terminus vs. C terminus - CORRECT ANSWER-N= location of the first amino
in a polypeptide, the "amino" end
C= location of last amino in polypeptide, carboxyl end
, protein structure levels - CORRECT ANSWER-1. primary: linear sequence of
amino acids, determined by genes, carries info for production of polypeptides
2. secondary
-alpha helix: repeating structure stabilized by hydrogen bonds
-beta sheets: regions lie parallel to each other
3. tertiary: 3D shape of a single polypeptide, involves side chain interactions
4. quartenary: when 2 polypeptides bond w/ each other
protein structure bonds - CORRECT ANSWER-1. hydrogen bonds: important in
levels 2,3,4. Large # of weak hydrogen bonds creates strong force for protein
folding and stability
2. ionic bonds/polar interactions: important in 3rd and 4th structure, some side
chains are positively or negatively charged
COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED
Answers 100% PASS
isomer - CORRECT ANSWER-two or more molecules w/ the same chemical
formula but different structures, characteristics, bonding relationships
stereoisomers - CORRECT ANSWER-have identical bonding relationships, but
the spatial positioning of their atoms differ
cis isomer - CORRECT ANSWER-Carbon chain is found on the same side of the
C=C double bond.
trans isomer - CORRECT ANSWER-carbon chain found on opposite side
condensation reaction - CORRECT ANSWER-reaction in which two or more
molecules are combined into one larger molecule by covalent bonding, with the
loss of a small water molecule
hydrolysis reaction - CORRECT ANSWER-chemical reaction that adds water to
break apart other molecules
all carbohydrates contain... - CORRECT ANSWER-carbon, hydrogen, and oxygen
,carbohydrates - CORRECT ANSWER-monomer= monosaccrihdes (simple sugars
like pentose or hexose)
polymer= polysaccrihdes
energy stored within the bonds
glycosidic bond - CORRECT ANSWER-covalent bond between 2 sugar molecules
via dehydration reaction
energy storage - CORRECT ANSWER-starch= plant cells
glycogen= animal cells
lipids - CORRECT ANSWER--have no monomers bc they are not polymers
-hydrophobic molecules composed mainly of carbon, hydrogen, oxygen
-nonpolar, insoluble in water
triglycerides - CORRECT ANSWER-fats formed when glycerol bonds to 3 fatty
acids. a 3 carbon molecule w/ one hydroxyl group
saturated fatty acid - CORRECT ANSWER-fatty acid in which all carbons are
linked by single covalent bonds, solid at room temp
unsaturated fatty acids - CORRECT ANSWER-fatty acids containing one or more
carbon double bonds. (fat stores energy to make ATP) liquid at room temp
COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED
,phospholipid - CORRECT ANSWER-a lipid that contains phosphorus and that is
a structural component in cell membranes (backbone)
fatty acid chain - CORRECT ANSWER-hydrophobic tails
phosphate group - CORRECT ANSWER-hydrophilic head
steroid - CORRECT ANSWER--lipid containing 4 interconnected rings of carbon
atoms
-hormone in plants and animals
-hydroxyl group attached
amino acids - CORRECT ANSWER--monomer= AA(CHNOPS)
-polymer= proteins
amino group accepts hydrogen and has a + charge, while carboxyl loses that
hydrogen and has a - charge
peptide bond - CORRECT ANSWER-covalent bond between carboxyl and amino
group that links amino acids in a polypeptide
N terminus vs. C terminus - CORRECT ANSWER-N= location of the first amino
in a polypeptide, the "amino" end
C= location of last amino in polypeptide, carboxyl end
, protein structure levels - CORRECT ANSWER-1. primary: linear sequence of
amino acids, determined by genes, carries info for production of polypeptides
2. secondary
-alpha helix: repeating structure stabilized by hydrogen bonds
-beta sheets: regions lie parallel to each other
3. tertiary: 3D shape of a single polypeptide, involves side chain interactions
4. quartenary: when 2 polypeptides bond w/ each other
protein structure bonds - CORRECT ANSWER-1. hydrogen bonds: important in
levels 2,3,4. Large # of weak hydrogen bonds creates strong force for protein
folding and stability
2. ionic bonds/polar interactions: important in 3rd and 4th structure, some side
chains are positively or negatively charged
COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED
