MCB 150 Final Exam Review
Questions and Answers Graded A+
Children receiving chemotherapy or bone marrow transplants to treat cancer have
a weakened immune system. Some vaccinations are comprised of a weakened live
virus and are not recommended for those who are immunocompromised. What
strategies can help protect the immunocompromised individuals in a community?
Choose all that apply.
(A) Achieve high vaccination rates to provide herd immunity.
(B) Vaccinate them even if they are immunocompromised.
(C) Create an alternative non-live vaccine.
(C) Vaccinate their family and close contacts. - CORRECT ANSWER-A, C, D
What experimental question(s) can be addressed by a microarray analysis? Choose
all that apply.
(A) The sequence of a certain gene in an organism
,(B) If a certain gene is being expressed in a specific tissue
(C) If a certain gene is being expressed in an organism
(D) If a certain gene is expressed at different levels in different tissues
(E) If a certain gene is expressed in some developmental stages but not others -
CORRECT ANSWER-B, C, D, E
Consider the following statements about genomes:
(1) There is a linear relationship between the size of a eukaryote's genome and the
number of protein-coding genes.
(2) Although prokaryotic genomes are typically smaller than eukaryotic genomes, a
higher percentage of a prokaryote's genome consists of repetitive sequences.
Determine which option below is correct.
(A) Statements 1 and 2 are both true.
(B) Statements 1 and 2 are both false.
(C) Statement 1 is true, Statement 2 is false.
(D) Statement 1 is false, Statement 2 is true. - CORRECT ANSWER-B
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,Which of the following sequences are most likely to be recognized by a Type II
restriction enzyme (the type described in your text)? Only one strand of a double
stranded DNA sequence is shown, and all sequences are given 5'-3'. Choose all that
apply.
(A) TTTTTT
(B) AGAGAG
(C) GCAACG
(D) CCCGGG
(E) GATTACA - CORRECT ANSWER-D
Which of the following are typically used to construct a cDNA library? The list
does not necessarily contain everything needed. Choose all that apply.
(A) DNA ligase
(B) Reverse transcriptase
(C) Whole cell DNA
(D) Primary mRNA transcripts
(E) DNA polymerase - CORRECT ANSWER-A, B, D, E
, You are preparing to use a reverse transcriptase to create cDNA from a sample
containing purified mature eukaryotic mRNA. If you are preparing a primer using
only one type of nucleotide, the primer most likely to be successful would be
__________.
(A) poly-A
(B) poly-C
(C) poly-G
(D) poly-T
(E) No primer composed of a single type of nucleotide can be used to prepare
cDNA from these mRNAs. - CORRECT ANSWER-D
Identify any mutation that matches all of the following criteria:
Classified as a point mutation
Results in a change in the primary sequence of the protein
Choose all that apply.
(A) Insertions
COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED
Questions and Answers Graded A+
Children receiving chemotherapy or bone marrow transplants to treat cancer have
a weakened immune system. Some vaccinations are comprised of a weakened live
virus and are not recommended for those who are immunocompromised. What
strategies can help protect the immunocompromised individuals in a community?
Choose all that apply.
(A) Achieve high vaccination rates to provide herd immunity.
(B) Vaccinate them even if they are immunocompromised.
(C) Create an alternative non-live vaccine.
(C) Vaccinate their family and close contacts. - CORRECT ANSWER-A, C, D
What experimental question(s) can be addressed by a microarray analysis? Choose
all that apply.
(A) The sequence of a certain gene in an organism
,(B) If a certain gene is being expressed in a specific tissue
(C) If a certain gene is being expressed in an organism
(D) If a certain gene is expressed at different levels in different tissues
(E) If a certain gene is expressed in some developmental stages but not others -
CORRECT ANSWER-B, C, D, E
Consider the following statements about genomes:
(1) There is a linear relationship between the size of a eukaryote's genome and the
number of protein-coding genes.
(2) Although prokaryotic genomes are typically smaller than eukaryotic genomes, a
higher percentage of a prokaryote's genome consists of repetitive sequences.
Determine which option below is correct.
(A) Statements 1 and 2 are both true.
(B) Statements 1 and 2 are both false.
(C) Statement 1 is true, Statement 2 is false.
(D) Statement 1 is false, Statement 2 is true. - CORRECT ANSWER-B
COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED
,Which of the following sequences are most likely to be recognized by a Type II
restriction enzyme (the type described in your text)? Only one strand of a double
stranded DNA sequence is shown, and all sequences are given 5'-3'. Choose all that
apply.
(A) TTTTTT
(B) AGAGAG
(C) GCAACG
(D) CCCGGG
(E) GATTACA - CORRECT ANSWER-D
Which of the following are typically used to construct a cDNA library? The list
does not necessarily contain everything needed. Choose all that apply.
(A) DNA ligase
(B) Reverse transcriptase
(C) Whole cell DNA
(D) Primary mRNA transcripts
(E) DNA polymerase - CORRECT ANSWER-A, B, D, E
, You are preparing to use a reverse transcriptase to create cDNA from a sample
containing purified mature eukaryotic mRNA. If you are preparing a primer using
only one type of nucleotide, the primer most likely to be successful would be
__________.
(A) poly-A
(B) poly-C
(C) poly-G
(D) poly-T
(E) No primer composed of a single type of nucleotide can be used to prepare
cDNA from these mRNAs. - CORRECT ANSWER-D
Identify any mutation that matches all of the following criteria:
Classified as a point mutation
Results in a change in the primary sequence of the protein
Choose all that apply.
(A) Insertions
COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED
