Exam (elaborations)
BIOS 251 WEEK 2 – QUESTIONS & SOLUTIONS (100%)
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BIOS 251 WEEK 2 – QUESTIONS & SOLUTIONS (100%)
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BIOS 251 WEEK 2 – QUESTIONS & SOLUTIONS (100%)Active protein transporters which move substances from lower concentration
into higher concentration are known as
channels
ligands
transponders
pumps Right Ans - pumps
Primary active transport involves one substance moving down its
concentration gradient to move another substance against its electrochemical
gradient.
True
False Right Ans - False
A protein transporter which moves two substances by secondary active
transport in the same direction is known as a
symporter
transponder
antiporter
inductor Right Ans - symporter
Endocytosis is the inward movement of a large particle into the cell by means
of vesicular transport.
True
False Right Ans - 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 Right Ans - secondary active transport
, 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 Right Ans - 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 Right Ans - 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
vesicular reflex
intracellular balance
transcytosis
maintenance of membrane integrity Right Ans - trancytosis
In order to move calcium ions through the cell membrane, it is necessary to
use the energy in ATP. From what you know about active membrane
transport, which type of transport is involved?
secondary active transport
vesicular transport
transcytosis
primary active transport Right Ans - primary active transport
Most cells which secrete substances into the extracellular fluid will release
them by the process of exocytosis.
True
False Right Ans - True
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