2026 Updated
Biology 245 MCQs
Final Exam
,1. Which processes are parts of mRNA maturation?
a) splicing
b) capping
c) formation of double stranded regions
d) polyadenylation
2. During anaphase II of meiosis:
a) homologues separate and migrate towards opposite
b) sister chromatids separate and migrate towards opposite poles
c) nuclear membrane reforms
d) chromosomes line up in a single line.
3. The sheep is an intermediate host of:
a) sheep liver fluke
b) Ascaris lumbricoides
c) Echinococcus granulosus
d) Enterobius vermicularis
4. Which antibody class is abundant in body fluids?
a) IgA
b) IgG
c) IgE
d) IgM
e) IgD
5. In eukaryotes the first amino acid synthesized during translation is
a) isoleucine
b) leucine
c) methionine
d) formylmethionine
6. Trichuris trichiura's eggs need additional development in:
a) soil
b) stomach
, c)lungs
d) water
7. HIV infection leads to:
a) decreased CD4 + -Ly levels
b) increased CD4 + -Ly levels
c) susceptibility to opportunistic infections
d) asthma
e) hypersensitivity type II
8. What is a promoter?
a) it is a protein complex
b) it is a nucleotide sequence
c) it is needed for initiation of replication
d) it is crucial for transcription initiation
9. DNA replication takes place during:
a) S phase
b) Gl phase
c) metaphase
d) telophase
10. The hypervariable region of an antibody resides in the:
a) N terminal region of light chain
b) N - terminal region of light and heavy chain
c) C - terminal region of light chain
d) C - terminal region of heavy chain
e) C - terminal region of light chain and heavy chain
11. Th - cells:
a) activate B - cells to produce antibodies
b) assist phagocytes in destroying ingested pathogens
c) are involved in the proper folding of protein molecules
d) activate the complement system
Biology 245 MCQs
Final Exam
,1. Which processes are parts of mRNA maturation?
a) splicing
b) capping
c) formation of double stranded regions
d) polyadenylation
2. During anaphase II of meiosis:
a) homologues separate and migrate towards opposite
b) sister chromatids separate and migrate towards opposite poles
c) nuclear membrane reforms
d) chromosomes line up in a single line.
3. The sheep is an intermediate host of:
a) sheep liver fluke
b) Ascaris lumbricoides
c) Echinococcus granulosus
d) Enterobius vermicularis
4. Which antibody class is abundant in body fluids?
a) IgA
b) IgG
c) IgE
d) IgM
e) IgD
5. In eukaryotes the first amino acid synthesized during translation is
a) isoleucine
b) leucine
c) methionine
d) formylmethionine
6. Trichuris trichiura's eggs need additional development in:
a) soil
b) stomach
, c)lungs
d) water
7. HIV infection leads to:
a) decreased CD4 + -Ly levels
b) increased CD4 + -Ly levels
c) susceptibility to opportunistic infections
d) asthma
e) hypersensitivity type II
8. What is a promoter?
a) it is a protein complex
b) it is a nucleotide sequence
c) it is needed for initiation of replication
d) it is crucial for transcription initiation
9. DNA replication takes place during:
a) S phase
b) Gl phase
c) metaphase
d) telophase
10. The hypervariable region of an antibody resides in the:
a) N terminal region of light chain
b) N - terminal region of light and heavy chain
c) C - terminal region of light chain
d) C - terminal region of heavy chain
e) C - terminal region of light chain and heavy chain
11. Th - cells:
a) activate B - cells to produce antibodies
b) assist phagocytes in destroying ingested pathogens
c) are involved in the proper folding of protein molecules
d) activate the complement system
