MCB 150 UIUC EXAM 3
QUESTIONS |GUARANTEED
ACCURATE ANSWERS |ACTUAL SET
|NEWEST 2025\26
Nucleoplasm - ACCURATE ANSWERS✔✔ substance of a cell nucleus
Chromatin Fibers - ACCURATE ANSWERS✔✔ DNA and protein
Nucleolus - ACCURATE ANSWERS✔✔ site for rrna synthesis and
processing assembly of subunits
Nuclear Pore Complex - ACCURATE ANSWERS✔✔ particles can pass
through this
Nuclear Lamina - ACCURATE ANSWERS✔✔ Network of proteins
that provide attachement for heterochromatin and give the nucleus shape
Who proposed that there were functional domains of nucleus? -
ACCURATE ANSWERS✔✔ Rabl
What can visualize and identify chromosomes? - ACCURATE
ANSWERS✔✔ Flourescence
,Functional Domains of Nucleus - ACCURATE ANSWERS✔✔ each
chromosome occupies a distinct territory within the nucleus and is
arranged in an organized fashion. Nuclei are divided into discrete
funtional domains that play an important role in regulating gene
expression and in replication
How many focis of replication are in the human nucleus? - ACCURATE
ANSWERS✔✔ greater than 100
The cell cycle consists of what? - ACCURATE ANSWERS✔✔ M phase
and interphase (G1, S phase, G2)
G1 Phase - ACCURATE ANSWERS✔✔ cell is growing and preparing
for s phase
S phase - ACCURATE ANSWERS✔✔ when DNA synthesis occurs
(replication), longest interphase cycle
G2 phase - ACCURATE ANSWERS✔✔ make sure you are ready to go
through next round of m phase
M phase - ACCURATE ANSWERS✔✔ mitosis and cytokinesis
(division of mother cell into two identical daughter cells)
, Early replication has what gene density? - ACCURATE ANSWERS✔✔
high gene density, euchromatin
Late replication has what gene density? - ACCURATE ANSWERS✔✔
low gene density, heterochromatin
Nucleolus - ACCURATE ANSWERS✔✔ ribosome production facility,
site for rrna synthesis, rrna processing, assembly of ribosomal subunits
What are the 4 types of rrna? - ACCURATE ANSWERS✔✔ 5s, 5.8s,
18s, 28s
How many copies does the human cell have of 5.8s, 18s, and 28s rrna
genes? - ACCURATE ANSWERS✔✔ about 280
How many copies does the human cell have of 5s rrna genes? -
ACCURATE ANSWERS✔✔ about 2000
Tandem arrays - ACCURATE ANSWERS✔✔ when 5.8s, 18s, and 28s
rrnas are transcribed by polymerase 1 into pre rrna
45S GENES - ACCURATE ANSWERS✔✔ processed into 5.8s, 18s,
and 28s rrnas are found on human chromosomes 13, 14, 15, 21, and 22
QUESTIONS |GUARANTEED
ACCURATE ANSWERS |ACTUAL SET
|NEWEST 2025\26
Nucleoplasm - ACCURATE ANSWERS✔✔ substance of a cell nucleus
Chromatin Fibers - ACCURATE ANSWERS✔✔ DNA and protein
Nucleolus - ACCURATE ANSWERS✔✔ site for rrna synthesis and
processing assembly of subunits
Nuclear Pore Complex - ACCURATE ANSWERS✔✔ particles can pass
through this
Nuclear Lamina - ACCURATE ANSWERS✔✔ Network of proteins
that provide attachement for heterochromatin and give the nucleus shape
Who proposed that there were functional domains of nucleus? -
ACCURATE ANSWERS✔✔ Rabl
What can visualize and identify chromosomes? - ACCURATE
ANSWERS✔✔ Flourescence
,Functional Domains of Nucleus - ACCURATE ANSWERS✔✔ each
chromosome occupies a distinct territory within the nucleus and is
arranged in an organized fashion. Nuclei are divided into discrete
funtional domains that play an important role in regulating gene
expression and in replication
How many focis of replication are in the human nucleus? - ACCURATE
ANSWERS✔✔ greater than 100
The cell cycle consists of what? - ACCURATE ANSWERS✔✔ M phase
and interphase (G1, S phase, G2)
G1 Phase - ACCURATE ANSWERS✔✔ cell is growing and preparing
for s phase
S phase - ACCURATE ANSWERS✔✔ when DNA synthesis occurs
(replication), longest interphase cycle
G2 phase - ACCURATE ANSWERS✔✔ make sure you are ready to go
through next round of m phase
M phase - ACCURATE ANSWERS✔✔ mitosis and cytokinesis
(division of mother cell into two identical daughter cells)
, Early replication has what gene density? - ACCURATE ANSWERS✔✔
high gene density, euchromatin
Late replication has what gene density? - ACCURATE ANSWERS✔✔
low gene density, heterochromatin
Nucleolus - ACCURATE ANSWERS✔✔ ribosome production facility,
site for rrna synthesis, rrna processing, assembly of ribosomal subunits
What are the 4 types of rrna? - ACCURATE ANSWERS✔✔ 5s, 5.8s,
18s, 28s
How many copies does the human cell have of 5.8s, 18s, and 28s rrna
genes? - ACCURATE ANSWERS✔✔ about 280
How many copies does the human cell have of 5s rrna genes? -
ACCURATE ANSWERS✔✔ about 2000
Tandem arrays - ACCURATE ANSWERS✔✔ when 5.8s, 18s, and 28s
rrnas are transcribed by polymerase 1 into pre rrna
45S GENES - ACCURATE ANSWERS✔✔ processed into 5.8s, 18s,
and 28s rrnas are found on human chromosomes 13, 14, 15, 21, and 22
