BIO 353 Exam Study Questions And Answers With
Verified Solutions
Filopodia contain receptors that sense the environment and...
(a) all filopodia stop moving when the cell is about to extend a lamellipodium
(b) as a first step in walking the lamellipodium forms before the filopodium
(c) a lamellipodium extends only from filopodia that continue to move
(d) two of the above
(e) none of the above ANS (e) none of the above.
(T/F) Single-celled organisms have a limited number of biomolecular machines within them. ANS
true.
(T/F) An evolutionary advancement occurred when organisms became multicellular and acquired a
division of labor. ANS true.
(T/F) When a cell is anchorage-dependent for growth, it can then go through the cell cycle when it is
suspended. ANS false.
Contact inhibition is a subset of ________. ANS anchorage dependence for growth.
What limits the growth of a tumor? ANS invasion by capillaries.
When the 1mm2 tissue fragment is place in the Erlenmeyer flask to loosen the cells in the tissue
(primary explant), what were the components of the medium? ANS PBS made 0.5% with trypsin
and 3mM with MgCl2.
What happens in primary culture? ANS Some cells walk out of chunks and adhere to the plate.
Some cells escape but don't adhere to the plate.
Some cells die.
, (ESSAY) Explain two methods of making a cell line in detail? Assume in this answer you are starting
with the end of secondary culture moving into making up the cell line. ANS (ESSAY)
(ESSAY) What are the limitations of cell culture technology? ANS (ESSAY)
(T/F) Peroxisomes likely originated from endosymbiosis. ANS false.
(T/F) Peroxisomes increase the fitness of the primitive proto-prokaryote by removing toxic oxygen in
the ancient earth. ANS true.
(T/F) The endomembrane system supposedly resulted in the formation of the nuclear envelope,
endoplasmic reticulum, Golgi apparatus and primary lysosomes. ANS true.
Loss of the cell wall:
(a) is unique to plants
(b) occurs only for the endosymbiosis theory
(c) occurs both for the endosymbiosis theory and for the endomembrane system
(d) made the plasma membrane become rigid
(e) occurred due to love levels of oxygen ANS (c) occurs both for the endosymbiosis theory and
for the endomembrane system
(T/F) The primitive protoprokaryote likely acquired motility before it lost the cell wall. ANS
false.
The number of carbons in the esterified fatty acid tail is _____ and ranges between _____ and _____.
ANS even
16
22
Verified Solutions
Filopodia contain receptors that sense the environment and...
(a) all filopodia stop moving when the cell is about to extend a lamellipodium
(b) as a first step in walking the lamellipodium forms before the filopodium
(c) a lamellipodium extends only from filopodia that continue to move
(d) two of the above
(e) none of the above ANS (e) none of the above.
(T/F) Single-celled organisms have a limited number of biomolecular machines within them. ANS
true.
(T/F) An evolutionary advancement occurred when organisms became multicellular and acquired a
division of labor. ANS true.
(T/F) When a cell is anchorage-dependent for growth, it can then go through the cell cycle when it is
suspended. ANS false.
Contact inhibition is a subset of ________. ANS anchorage dependence for growth.
What limits the growth of a tumor? ANS invasion by capillaries.
When the 1mm2 tissue fragment is place in the Erlenmeyer flask to loosen the cells in the tissue
(primary explant), what were the components of the medium? ANS PBS made 0.5% with trypsin
and 3mM with MgCl2.
What happens in primary culture? ANS Some cells walk out of chunks and adhere to the plate.
Some cells escape but don't adhere to the plate.
Some cells die.
, (ESSAY) Explain two methods of making a cell line in detail? Assume in this answer you are starting
with the end of secondary culture moving into making up the cell line. ANS (ESSAY)
(ESSAY) What are the limitations of cell culture technology? ANS (ESSAY)
(T/F) Peroxisomes likely originated from endosymbiosis. ANS false.
(T/F) Peroxisomes increase the fitness of the primitive proto-prokaryote by removing toxic oxygen in
the ancient earth. ANS true.
(T/F) The endomembrane system supposedly resulted in the formation of the nuclear envelope,
endoplasmic reticulum, Golgi apparatus and primary lysosomes. ANS true.
Loss of the cell wall:
(a) is unique to plants
(b) occurs only for the endosymbiosis theory
(c) occurs both for the endosymbiosis theory and for the endomembrane system
(d) made the plasma membrane become rigid
(e) occurred due to love levels of oxygen ANS (c) occurs both for the endosymbiosis theory and
for the endomembrane system
(T/F) The primitive protoprokaryote likely acquired motility before it lost the cell wall. ANS
false.
The number of carbons in the esterified fatty acid tail is _____ and ranges between _____ and _____.
ANS even
16
22
