BIOL 110 Purdue University Lecture Exam #2 Questions
With Complete Solutions
An endomembrane system is composed of:
a. Internal system of membrane
b. both smooth ER and rough ER
c. the Golgi complex and vesicles
d. all the above Correct Answers d
As cell size _______, cell volume (demand) ________ faster
than cell surface area (supply).
a. increases; decreases
b. decreases; decreases
c. increases; increases
d. decreases; increases Correct Answers c
As the size of the cell increases the demand gets to outstrip the
supply so what can we conclude?
a. remaining large is the best option
b. remaining small allows cells to maintain a workable surface
to volume ratio
c. remaining large allows cells to maintain a workable surface to
volume ratio
d. remain small Correct Answers b
Carrier proteins must bind to the molecules that they ________.
a. carry
b. transport
c. have
d. activate Correct Answers b
,Changing the environment temperatures affect the membrane
fluidity & cells need to respond by:
a. cells at a lower temperature are less fluid
b. cells at a higher temperature are more fluid
c. both A and B
d. Neither A or B Correct Answers c
Compartments are:
a. membrane bound
b. in a cell perform different functions
c. called organelles or little organisms
d. all the above Correct Answers d
Dr. Humphrey describes the Golgi Apparatus as:
a. Fedex
b. UPS
c. both A and B
d. neither A or B Correct Answers c
Dr. Humphrey describes the vesicles are the:
a. UPS trucks
b. Fedex trucks
c. both A and B
d. neither A or B Correct Answers c
Dr. Humphrey says to think of Channel Proteins as ______.
a. transportation
b. tunnels
c. none of the above Correct Answers b
How can cells regulate Facilitated Diffusion?
, a. controlling the presence or absence of specific carrier proteins
or channel proteins
b. regulating the function of specific carrier or channels
c. both A and B
d. all the above Correct Answers c
How do you regulate membrane fluidity?
a. by changing the fatty acid chains of phospholipids by
generating phospholipids that have more or fewer unsaturations
in the fatty acid chains and generates phospholipids that have
much longer or shorter fatty acid chains
b. keep a "goldie locks effect" which is just right
c. both A and B
d. all the above Correct Answers c
How does a cell compensate when making phospholipids with
Fatty Acid Chains at a higher temperature they need to be
______ and ______?
a. longer; more saturated
b. longer; more unsaturated
c. short; more saturated
d. short; more unsaturated Correct Answers a
How does a cell compensate when making phospholipids with
Fatty Acid Chains at a lower temperature they need to be
______ and _______.
a. longer; saturated
b. longer; more unsaturated
c. short; saturated
d. short; more unsaturated Correct Answers d
With Complete Solutions
An endomembrane system is composed of:
a. Internal system of membrane
b. both smooth ER and rough ER
c. the Golgi complex and vesicles
d. all the above Correct Answers d
As cell size _______, cell volume (demand) ________ faster
than cell surface area (supply).
a. increases; decreases
b. decreases; decreases
c. increases; increases
d. decreases; increases Correct Answers c
As the size of the cell increases the demand gets to outstrip the
supply so what can we conclude?
a. remaining large is the best option
b. remaining small allows cells to maintain a workable surface
to volume ratio
c. remaining large allows cells to maintain a workable surface to
volume ratio
d. remain small Correct Answers b
Carrier proteins must bind to the molecules that they ________.
a. carry
b. transport
c. have
d. activate Correct Answers b
,Changing the environment temperatures affect the membrane
fluidity & cells need to respond by:
a. cells at a lower temperature are less fluid
b. cells at a higher temperature are more fluid
c. both A and B
d. Neither A or B Correct Answers c
Compartments are:
a. membrane bound
b. in a cell perform different functions
c. called organelles or little organisms
d. all the above Correct Answers d
Dr. Humphrey describes the Golgi Apparatus as:
a. Fedex
b. UPS
c. both A and B
d. neither A or B Correct Answers c
Dr. Humphrey describes the vesicles are the:
a. UPS trucks
b. Fedex trucks
c. both A and B
d. neither A or B Correct Answers c
Dr. Humphrey says to think of Channel Proteins as ______.
a. transportation
b. tunnels
c. none of the above Correct Answers b
How can cells regulate Facilitated Diffusion?
, a. controlling the presence or absence of specific carrier proteins
or channel proteins
b. regulating the function of specific carrier or channels
c. both A and B
d. all the above Correct Answers c
How do you regulate membrane fluidity?
a. by changing the fatty acid chains of phospholipids by
generating phospholipids that have more or fewer unsaturations
in the fatty acid chains and generates phospholipids that have
much longer or shorter fatty acid chains
b. keep a "goldie locks effect" which is just right
c. both A and B
d. all the above Correct Answers c
How does a cell compensate when making phospholipids with
Fatty Acid Chains at a higher temperature they need to be
______ and ______?
a. longer; more saturated
b. longer; more unsaturated
c. short; more saturated
d. short; more unsaturated Correct Answers a
How does a cell compensate when making phospholipids with
Fatty Acid Chains at a lower temperature they need to be
______ and _______.
a. longer; saturated
b. longer; more unsaturated
c. short; saturated
d. short; more unsaturated Correct Answers d
