LIBERTY UNIVERSITY MSCI 660
INTRACELLULAR MEMBRANE TRAFFIC
AND CELLULAR SORTING QUIZ 2026
CERTIFICATION EVALUATION QUESTIONS
AND FULL SOLUTION GUIDE GRADED A+
⩥ What is the function of the plasma membrane?
Answer: Forms the outer boundary of the cell, separates intracellular and
extracellular fluid, and facilitates communication and transport.
⩥ What is cytoplasm?
Answer: The living substance that exists only inside cells, filling the
space between the plasma membrane and nucleus.
⩥ What is the function of ribosomes?
Answer: To make enzymes and other protein compounds, acting as
'protein factories'.
⩥ What is the difference between rough and smooth endoplasmic
reticulum?
Answer: Rough ER has ribosomes and is involved in protein folding and
transport, while smooth ER synthesizes membrane components.
, ⩥ What is the role of the Golgi apparatus?
Answer: Chemically processes molecules from the ER, packages them
into vesicles, and releases them.
⩥ What is the function of mitochondria?
Answer: Acts as the cellular 'power plant' by producing energy through
cellular respiration.
⩥ What do lysosomes do?
Answer: Contain enzymes that digest substances and destroy microbes.
⩥ What is the centrosome?
Answer: An organizing region of the cytoskeleton that consists of two
centrioles.
⩥ What is the function of centrioles?
Answer: Play a crucial role in forming the spindle that moves
chromosomes during cell division.
⩥ What is the nucleus?
Answer: The central structure of the cell that contains most of the
genetic information.
INTRACELLULAR MEMBRANE TRAFFIC
AND CELLULAR SORTING QUIZ 2026
CERTIFICATION EVALUATION QUESTIONS
AND FULL SOLUTION GUIDE GRADED A+
⩥ What is the function of the plasma membrane?
Answer: Forms the outer boundary of the cell, separates intracellular and
extracellular fluid, and facilitates communication and transport.
⩥ What is cytoplasm?
Answer: The living substance that exists only inside cells, filling the
space between the plasma membrane and nucleus.
⩥ What is the function of ribosomes?
Answer: To make enzymes and other protein compounds, acting as
'protein factories'.
⩥ What is the difference between rough and smooth endoplasmic
reticulum?
Answer: Rough ER has ribosomes and is involved in protein folding and
transport, while smooth ER synthesizes membrane components.
, ⩥ What is the role of the Golgi apparatus?
Answer: Chemically processes molecules from the ER, packages them
into vesicles, and releases them.
⩥ What is the function of mitochondria?
Answer: Acts as the cellular 'power plant' by producing energy through
cellular respiration.
⩥ What do lysosomes do?
Answer: Contain enzymes that digest substances and destroy microbes.
⩥ What is the centrosome?
Answer: An organizing region of the cytoskeleton that consists of two
centrioles.
⩥ What is the function of centrioles?
Answer: Play a crucial role in forming the spindle that moves
chromosomes during cell division.
⩥ What is the nucleus?
Answer: The central structure of the cell that contains most of the
genetic information.
