1|Page
BIOCHEM ACS Chemical Society exam ACTUAL
VERIFIED EXAM QUESTIONS AND CORRECT
ANSWERS||NEWEST EXAM!!.pdf
What makes up sucrose? - Answer-fructose and glucose
monosaccharides
What makes up lactose? - Answer-glucose and galactose
monosaccharides
What makes up mannose? - Answer-two glucose
monosaccharides
What are lipids? - Answer-soluble in other nonpolar
solvents (not water)
What are triglycerides composed of? - Answer-glycerol
and three fatty acids
What is saponification? - Answer-base hydrolysis of a
triglyceride or other fat
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strong base is added
breaks ester linkages to release hydroxyls and form
glycerol
What has a higher level of unsaturation -- oils or fats? -
Answer-oils
liquid at room temperature
What is the structure of the plasma membrane? - Answer-
hydrophylic head
hydrophobic fatty acid tails
proteins span the phospholipid bilayer
Why type of amino acid is present in the plasma
membrane among the fatty acid tails? - Answer-
hydrophobic/nonpolar
What is passive transport (simple diffusion)? - Answer-no
energy required
no protein required
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move from high concentration to low concentration
water, gases, ethanol (small nonpolar) can pass through
What is facilitated diffusion? - Answer-requires protein
no energy required
molecules are two large to go through on their own
What is active transport? - Answer-energy is required
moves from low to high concentration
How many carbon atoms do most fatty acids have? -
Answer-even number
What bond holds nucleotides together? - Answer-
phosphodiester bond
What base pairing exists in nucleic acids? How many
hydrogen bonds between them? - Answer-G--C (3
hydrogen bonds)
BIOCHEM ACS Chemical Society exam ACTUAL
VERIFIED EXAM QUESTIONS AND CORRECT
ANSWERS||NEWEST EXAM!!.pdf
What makes up sucrose? - Answer-fructose and glucose
monosaccharides
What makes up lactose? - Answer-glucose and galactose
monosaccharides
What makes up mannose? - Answer-two glucose
monosaccharides
What are lipids? - Answer-soluble in other nonpolar
solvents (not water)
What are triglycerides composed of? - Answer-glycerol
and three fatty acids
What is saponification? - Answer-base hydrolysis of a
triglyceride or other fat
,2|Page
strong base is added
breaks ester linkages to release hydroxyls and form
glycerol
What has a higher level of unsaturation -- oils or fats? -
Answer-oils
liquid at room temperature
What is the structure of the plasma membrane? - Answer-
hydrophylic head
hydrophobic fatty acid tails
proteins span the phospholipid bilayer
Why type of amino acid is present in the plasma
membrane among the fatty acid tails? - Answer-
hydrophobic/nonpolar
What is passive transport (simple diffusion)? - Answer-no
energy required
no protein required
, 3|Page
move from high concentration to low concentration
water, gases, ethanol (small nonpolar) can pass through
What is facilitated diffusion? - Answer-requires protein
no energy required
molecules are two large to go through on their own
What is active transport? - Answer-energy is required
moves from low to high concentration
How many carbon atoms do most fatty acids have? -
Answer-even number
What bond holds nucleotides together? - Answer-
phosphodiester bond
What base pairing exists in nucleic acids? How many
hydrogen bonds between them? - Answer-G--C (3
hydrogen bonds)
