,
,Chapter 01: Cellular Biology
MULTIPLE CHOICE
1. A student is observing a cell under the microscope. It is observed to have supercoiled DNA
with histones. Which of the following would also be observed by the student?
a. A single circular chromosome
b. A nucleus
c. Free-floating nuclear material
d. No organelles
Answer:: B
The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its
nucleus; thus, the nucleus should be observed. A single circular chromosome called a
prokaryote contains free-floating nuclear material but has no organelles.
REF: p. 2
2. A nurse is instructing the staff about cellular functions. Which cellular function is the nurse
describing when an isolated cell absorbs oxygen and uses it to tr
Answer:form nutrients to energy?
a. Metabolic absorption
b. Communication
c. Secretion
d. Respiration
Answer:: D
The cell’s ability to absorb oxygen is referred to as respiration while its communication ability
involves maintenance of a steady dynamic state, metabolic absorption provides nutrition, and
secretion allows for the synthesizing of new substances.
REF: p. 2
3. A eukaryotic cell is undergoing DNA replication. In which region of the cell would most of
the genetic information be contained?
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus Cytoplasm
Answer:: C
The region of the cell that contains genetic material, including a large amount of ribonucleic
acid, most of the DNA, and DNA-binding proteins, is the nucleolus, which is located within
the cell’s nucleus. Mitochondria is associated with cellular respiration, while ribosomes are
involved with protein manufacturing. Cytoplasm is a fluid filling that is a component of the
cell.
REF: p. 2
, 4. Whichtofthefollowingtcantremovetproteins attachedtothecell’s bilayerbydissolvingtthe
layer itself?
a. Peripheralmembraneproteins
b. Integralmembraneproteins
c. Glycoproteins
d. Celladhesionmolecules
Answer:: B
Proteinstdirectlyattached to themembranebilayer can betremovedtbythetaction ofintegral me
mbraneproteinsthattdissolvethebilayer. Peripheralmembranetproteinsreside at the surfacetw
hiletcell adhesionmoleculesaretontheoutsideofthetmembrane. Glycoprotein markscellsand
doestnot float.
REF: p. 7
5. Whichtofthefollowingtcan bindtoplasmamembranereceptors?
a. Oxygen
b. Ribosomes
c. Amphipathiclipids
d. Ligands
Answer:: D
Ligandsaretheonlyspecificmoleculestthatcanbindtwithreceptorsontthetcellmembrane.
REF: p. 9
6. Anursetisreviewingareportfromapatienttwithtmetastaticcancer. Whattalternationintthet extr
acellularmatrix wouldtsuN
pUpoR
rtSthIeNdG gnBo.siC
iaT s oOf Mmetastatict cancer?
a. Decreasedfibronectin
b. Increasedcollagen
c. Decreasedelastin
d. Increasedglycoproteins
Answer:: A
Onlyareducedamountoftfibronectin istfound insometypesofcancerouscells, allowingt themt
to travelormetastasize.
REF: p. 10
7. Whichformofcell communicationisusedto trelate to othercellsindirectphysical contact?
a. Celljunction
b. Gaptjunction
c. Desmosome
d. Tightjunction
Answer:: A
Celljunctionsholdtcellsttogetherandtpermitmoleculestotpassfromcelltocell.
Gaptjunctionsallowforcellularcommunicationbetweencells. Neitherdesmosomesnortight jun
,Chapter 01: Cellular Biology
MULTIPLE CHOICE
1. A student is observing a cell under the microscope. It is observed to have supercoiled DNA
with histones. Which of the following would also be observed by the student?
a. A single circular chromosome
b. A nucleus
c. Free-floating nuclear material
d. No organelles
Answer:: B
The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its
nucleus; thus, the nucleus should be observed. A single circular chromosome called a
prokaryote contains free-floating nuclear material but has no organelles.
REF: p. 2
2. A nurse is instructing the staff about cellular functions. Which cellular function is the nurse
describing when an isolated cell absorbs oxygen and uses it to tr
Answer:form nutrients to energy?
a. Metabolic absorption
b. Communication
c. Secretion
d. Respiration
Answer:: D
The cell’s ability to absorb oxygen is referred to as respiration while its communication ability
involves maintenance of a steady dynamic state, metabolic absorption provides nutrition, and
secretion allows for the synthesizing of new substances.
REF: p. 2
3. A eukaryotic cell is undergoing DNA replication. In which region of the cell would most of
the genetic information be contained?
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus Cytoplasm
Answer:: C
The region of the cell that contains genetic material, including a large amount of ribonucleic
acid, most of the DNA, and DNA-binding proteins, is the nucleolus, which is located within
the cell’s nucleus. Mitochondria is associated with cellular respiration, while ribosomes are
involved with protein manufacturing. Cytoplasm is a fluid filling that is a component of the
cell.
REF: p. 2
, 4. Whichtofthefollowingtcantremovetproteins attachedtothecell’s bilayerbydissolvingtthe
layer itself?
a. Peripheralmembraneproteins
b. Integralmembraneproteins
c. Glycoproteins
d. Celladhesionmolecules
Answer:: B
Proteinstdirectlyattached to themembranebilayer can betremovedtbythetaction ofintegral me
mbraneproteinsthattdissolvethebilayer. Peripheralmembranetproteinsreside at the surfacetw
hiletcell adhesionmoleculesaretontheoutsideofthetmembrane. Glycoprotein markscellsand
doestnot float.
REF: p. 7
5. Whichtofthefollowingtcan bindtoplasmamembranereceptors?
a. Oxygen
b. Ribosomes
c. Amphipathiclipids
d. Ligands
Answer:: D
Ligandsaretheonlyspecificmoleculestthatcanbindtwithreceptorsontthetcellmembrane.
REF: p. 9
6. Anursetisreviewingareportfromapatienttwithtmetastaticcancer. Whattalternationintthet extr
acellularmatrix wouldtsuN
pUpoR
rtSthIeNdG gnBo.siC
iaT s oOf Mmetastatict cancer?
a. Decreasedfibronectin
b. Increasedcollagen
c. Decreasedelastin
d. Increasedglycoproteins
Answer:: A
Onlyareducedamountoftfibronectin istfound insometypesofcancerouscells, allowingt themt
to travelormetastasize.
REF: p. 10
7. Whichformofcell communicationisusedto trelate to othercellsindirectphysical contact?
a. Celljunction
b. Gaptjunction
c. Desmosome
d. Tightjunction
Answer:: A
Celljunctionsholdtcellsttogetherandtpermitmoleculestotpassfromcelltocell.
Gaptjunctionsallowforcellularcommunicationbetweencells. Neitherdesmosomesnortight jun
