PCB 3023 EXAM QUESTIONS AND
ANSWERS GRADED A+ 2026
Where does transcription occur in a eukaryotic cell?
a) cell membrane
b) nucleus
c) cytoplasm
d) golgi
e) ER - ANS b) nucleus
Which of the following IS NOT found in the nucleus?
a) DNA
b) RNA
c) proteins
d) nucleotides
e) All of these substances are found in the nucleus. - ANS e) All of these substances are found
in the nucleus.
Which of the following does NOT pertain to the cytoskeleton?
a) Contains actin filaments, microtubules and intermediate filaments
b) Provides structure to the cytoplasm of the cell.
c) It gives shape and strength to the cell
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,d) It is involved in cell movement.
e) It helps generate ATP in the cell. - ANS e) It helps generate ATP in the cell.
Which of the following is NOT true about prokaryotes?
a) One type is bacteria.
b) One type is Archaea.
c) Some can do photosynthesis.
d) One type is yeast.
e) Some can use oxygen to oxidize food molecules. - ANS d) One type is yeast.
Which of the following model organisms is a multicellular worm used to study the process of
development?a)Saccharomyces cerevisiae
b)Caenorhabditis elegans
c) Mus musculus
d) Arabidopsis thaliana
e) Xenopus laevis - ANS b)Caenorhabditis elegans
The major function of the rough endoplasmic reticulum is _____.
a) generation of energy
b) synthesis of cytosolic proteins
c) cell motility
d) generation of phospholipids
e) synthesis of secreted and membrane-associated proteins - ANS e) synthesis of secreted
and membrane-associated proteins
The four groups that amino acids are classified into are _____.
a) basic, acidic, uncharged polar, and nonpolar
b) hydrophobic, hydrophilic, uncharged polar, and nonpolar
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, c) basic, acidic, uncharged, and charged
d) uncharged, charged, uncharged polar, and charged polar
e) amino group, carboxyl group, hydrogen, and R group - ANS a) basic, acidic, uncharged
polar, and nonpolar
Which of the following effects would the amino acid proline have within a polypeptide chain?
(Hint: Think about what must happen to a polypeptide in order to make it a functional protein.)
a) it would reduce the flexibility of the polypeptide backbone
b) It would introduce positive charge to the polypeptide.
c) It would introduce negative charge to the polypeptide.
d) It would increase flexibility of the polypeptide backbone
e) It would improve the solubility of the polypeptide. - ANS a) it would reduce the flexibility
of the polypeptide backbone
Which of the following short protein chains (or PEPTIDES) would be considered the MOST
HYDROPHOBIC?
a) leucine-arginine-histidine-lysine-glycine-serine
b) glutamic acid-glycine-aspartic acid-leucine-glutamic acid-aspartic acid
c) leucine-valine-proline-alanine-methionine-isoleucine
d) cysteine-methionine-cysteine-valine-glutamic acid-tyrosine
e) All of these answers are roughly equally hydrophobic. - ANS c) leucine-valine-proline-
alanine-methionine-isoleucine
Which of the following amino acids would likely be found on the SURFACE of a folded protein?
a) arginine
b) proline
c) glycine
d) leucine
e) alanine - ANS a) arginine
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ANSWERS GRADED A+ 2026
Where does transcription occur in a eukaryotic cell?
a) cell membrane
b) nucleus
c) cytoplasm
d) golgi
e) ER - ANS b) nucleus
Which of the following IS NOT found in the nucleus?
a) DNA
b) RNA
c) proteins
d) nucleotides
e) All of these substances are found in the nucleus. - ANS e) All of these substances are found
in the nucleus.
Which of the following does NOT pertain to the cytoskeleton?
a) Contains actin filaments, microtubules and intermediate filaments
b) Provides structure to the cytoplasm of the cell.
c) It gives shape and strength to the cell
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
1
,d) It is involved in cell movement.
e) It helps generate ATP in the cell. - ANS e) It helps generate ATP in the cell.
Which of the following is NOT true about prokaryotes?
a) One type is bacteria.
b) One type is Archaea.
c) Some can do photosynthesis.
d) One type is yeast.
e) Some can use oxygen to oxidize food molecules. - ANS d) One type is yeast.
Which of the following model organisms is a multicellular worm used to study the process of
development?a)Saccharomyces cerevisiae
b)Caenorhabditis elegans
c) Mus musculus
d) Arabidopsis thaliana
e) Xenopus laevis - ANS b)Caenorhabditis elegans
The major function of the rough endoplasmic reticulum is _____.
a) generation of energy
b) synthesis of cytosolic proteins
c) cell motility
d) generation of phospholipids
e) synthesis of secreted and membrane-associated proteins - ANS e) synthesis of secreted
and membrane-associated proteins
The four groups that amino acids are classified into are _____.
a) basic, acidic, uncharged polar, and nonpolar
b) hydrophobic, hydrophilic, uncharged polar, and nonpolar
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2
, c) basic, acidic, uncharged, and charged
d) uncharged, charged, uncharged polar, and charged polar
e) amino group, carboxyl group, hydrogen, and R group - ANS a) basic, acidic, uncharged
polar, and nonpolar
Which of the following effects would the amino acid proline have within a polypeptide chain?
(Hint: Think about what must happen to a polypeptide in order to make it a functional protein.)
a) it would reduce the flexibility of the polypeptide backbone
b) It would introduce positive charge to the polypeptide.
c) It would introduce negative charge to the polypeptide.
d) It would increase flexibility of the polypeptide backbone
e) It would improve the solubility of the polypeptide. - ANS a) it would reduce the flexibility
of the polypeptide backbone
Which of the following short protein chains (or PEPTIDES) would be considered the MOST
HYDROPHOBIC?
a) leucine-arginine-histidine-lysine-glycine-serine
b) glutamic acid-glycine-aspartic acid-leucine-glutamic acid-aspartic acid
c) leucine-valine-proline-alanine-methionine-isoleucine
d) cysteine-methionine-cysteine-valine-glutamic acid-tyrosine
e) All of these answers are roughly equally hydrophobic. - ANS c) leucine-valine-proline-
alanine-methionine-isoleucine
Which of the following amino acids would likely be found on the SURFACE of a folded protein?
a) arginine
b) proline
c) glycine
d) leucine
e) alanine - ANS a) arginine
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