PCB 3023C / PCB3023C Final Exam:
(Latest Update ) Cell
Biology | Questions & Answers |
Grade A | 100% Correct - FGCU
Question:
What is the lac operon?
Answer:
A collection of genes that are important in coding for enzymes that
metabolize lactose
Question:
the study of environmental influences on gene expression that occur without
a DNA change
Answer:
epigenetics
,Question:
List the components of the plasma membrane
Answer:
lipid bilayer
proteins
Question:
Membrane fluidity- explain how fluid the membrane should be and why
Answer:
Cell membranes should be moderately fluid, neither too rigid nor too liquid,
to maintain their structural integrity and function effectively
Question:
Explain what molecules can/cannot cross membrane
Answer:
small, non-polar molecules like oxygen and carbon dioxide can easily diffuse
across the membrane. Larger, polar molecules and charged molecules, like
glucose and ions, generally cannot cross
, Question:
List different types of passive transport
Answer:
Diffusion
Osmosis
Facilitated diffusion
Question:
Explain what a concentration gradient is
Answer:
the process of particles moving through a solution or gas from an area with a
higher number of particles to an area with a lower number of particles
Question:
Difference between active and passive transport
Answer:
Active transport requires energy and passive does not
(Latest Update ) Cell
Biology | Questions & Answers |
Grade A | 100% Correct - FGCU
Question:
What is the lac operon?
Answer:
A collection of genes that are important in coding for enzymes that
metabolize lactose
Question:
the study of environmental influences on gene expression that occur without
a DNA change
Answer:
epigenetics
,Question:
List the components of the plasma membrane
Answer:
lipid bilayer
proteins
Question:
Membrane fluidity- explain how fluid the membrane should be and why
Answer:
Cell membranes should be moderately fluid, neither too rigid nor too liquid,
to maintain their structural integrity and function effectively
Question:
Explain what molecules can/cannot cross membrane
Answer:
small, non-polar molecules like oxygen and carbon dioxide can easily diffuse
across the membrane. Larger, polar molecules and charged molecules, like
glucose and ions, generally cannot cross
, Question:
List different types of passive transport
Answer:
Diffusion
Osmosis
Facilitated diffusion
Question:
Explain what a concentration gradient is
Answer:
the process of particles moving through a solution or gas from an area with a
higher number of particles to an area with a lower number of particles
Question:
Difference between active and passive transport
Answer:
Active transport requires energy and passive does not
