WEEK 2- BIO 251 QUESTIONS AND ANSWERS
Active protein transporters which move substances from lower concentration into higher
concentration are known as
channels
ligands
transponders
pumps Correct Answer-pumps
Primary active transport involves one substance moving down its concentration gradient to
move another substance against its electrochemical gradient.
True
False Correct Answer-False
A protein transporter which moves two substances by secondary active transport in the same
direction is known as a
symporter
, WEEK 2- BIO 251 QUESTIONS AND ANSWERS
transponder
antiporter
inductor Correct Answer-symporter
Endocytosis is the inward movement of a large particle into the cell by means of vesicular
transport.
True
False Correct Answer-True
The transport of amino acids into the cell results when sodium ions move down their
electrical gradient and cause amino acids to move into the cell against their electrochemical
gradient. This is an example of
vesicular transport
secondary active transport
simple diffusion
primary active transport Correct Answer-secondary active transport
, WEEK 2- BIO 251 QUESTIONS AND ANSWERS
The process by which a cell produces extensions to engulf a particle or unwanted cell so it is
taken into the attacking cell is known as
pinocytosis
primary active transport
phagocytosis
secondary active transport Correct Answer-phagocytosis
When a pouch forms in the cell membrane to enclose extracellular fluid in a vesicle in order to
transport that fluid into the cell, the process is known as exocytosis.
True
False Correct Answer-False
The movement of one substance into the cell by vesicular transport at the same rate another
substance is moved out of the cell also by vesicular transport, the process is known as
Active protein transporters which move substances from lower concentration into higher
concentration are known as
channels
ligands
transponders
pumps Correct Answer-pumps
Primary active transport involves one substance moving down its concentration gradient to
move another substance against its electrochemical gradient.
True
False Correct Answer-False
A protein transporter which moves two substances by secondary active transport in the same
direction is known as a
symporter
, WEEK 2- BIO 251 QUESTIONS AND ANSWERS
transponder
antiporter
inductor Correct Answer-symporter
Endocytosis is the inward movement of a large particle into the cell by means of vesicular
transport.
True
False Correct Answer-True
The transport of amino acids into the cell results when sodium ions move down their
electrical gradient and cause amino acids to move into the cell against their electrochemical
gradient. This is an example of
vesicular transport
secondary active transport
simple diffusion
primary active transport Correct Answer-secondary active transport
, WEEK 2- BIO 251 QUESTIONS AND ANSWERS
The process by which a cell produces extensions to engulf a particle or unwanted cell so it is
taken into the attacking cell is known as
pinocytosis
primary active transport
phagocytosis
secondary active transport Correct Answer-phagocytosis
When a pouch forms in the cell membrane to enclose extracellular fluid in a vesicle in order to
transport that fluid into the cell, the process is known as exocytosis.
True
False Correct Answer-False
The movement of one substance into the cell by vesicular transport at the same rate another
substance is moved out of the cell also by vesicular transport, the process is known as
