Ch03 HW: The Cell | APHY 101 | Ivy Tech Community College | Questions with
100% Verified Answers | Latest Update
Question: Which of the following is NOT a function of the plasma
membrane proteins?
stabilizing temperature acting as enzymes acting as channels acting as
carriers
Answer:
stabilizing temperature
Question: A primary active transport process is one in which
__________.
molecules pass directly through the phospholipid bilayer of the plasma
membrane molecules move across the plasma membrane without an
input of energy the plasma membrane folds inward to form a vesicle
containing extracellular material molecules move through transport
proteins that have been activated by ATP an intracellular vesicle fuses
with the plasma membrane and releases its contents to the extracellular
fluid
Answer:
molecules move through transport proteins that have been activated by ATP
Question: Some transport processes use transport proteins in the plasma
membrane, but do not require ATP. This type of transport is known as
_____.
facilitated diffusion exocytosis active transport simple diffusion
endocytosis
Answer:
facilitated diffusion
Question: The majority of water molecules moving across plasma
membranes by osmosis do so via a process that is most similar to ____.
simple diffusion active transport facilitated diffusion a process that
requires energy from the cell cotransport
Answer:
facilitated diffusion
,Question: The sodium-potassium pump uses ATP to move sodium and
potassium ions across the plasma membrane. This statement describes
_____.
primary active transport secondary active transport simple diffusion
exocytosis facilitated diffusion
Answer:
primary active transport
Question: A vesicle fuses with the plasma membrane and releases its
contents to the extracellular fluid. This statement describes _____.
active transport facilitated diffusion endocytosis exocytosis simple
diffusion
Answer:
exocytosis
Question: Solution A and solution B are separated by a semipermeable
membrane. Solution A contains 1% glucose, solution B contains 5%
glucose. By diffusion:
water will move from solution B to solution A. water will move from
solution A to solution B. glucose will move from solution B to solution
A. glucose will move from solution A to solution B.
Answer:
glucose will move from solution B to solution A.
Question: Solution A and solution B are separated by a semipermeable
membrane. Solution A contains 1% glucose, solution B contains 5%
glucose. By osmosis:
glucose will move from solution A to solution B. glucose will move
from solution B to solution A. water will move from solution A to
solution B. water will move from solution B to solution A.
Answer:
water will move from solution A to solution B.
, Question: If the ECF is more concentrated than the cytosol, then the
ECF is:
monotonic. hypotonic. isotonic. hypertonic.
Answer:
hypertonic.
Question: If the ECF is hypotonic, the cell will:
divide. swell. shrink. remain unchanged.
Answer:
swell.
Question: Which of the following best explains diffusion?
movement of molecules from an area of high concentration to an area of
low concentration movement of molecules from where there are fewer
of them to where there are more exchange of nonpolar molecules for
polar molecules movement of molecules farther away from equilibrium
Answer:
movement of molecules from an area of high concentration to an area of low concentration
Question: Which of the following is most likely to move through the
cell membrane by facilitated diffusion?
CO2 O2 Na+ small lipids
Answer:
Na+
Question: What is the basic difference between simple diffusion and
facilitated diffusion across a cell membrane?
In simple diffusion, molecules move down the concentration gradient
but in facilitated diffusion molecules move up the concentration
gradient. Simple diffusion requires molecules to move through special
doorways in the cell membrane. Simple diffusion is passive but
facilitated diffusion is an active process that uses energy. In facilitated
diffusion, molecules only move with the aid of a protein in the
membrane.
Answer:
In facilitated diffusion, molecules only move with the aid of a protein in the membrane.
100% Verified Answers | Latest Update
Question: Which of the following is NOT a function of the plasma
membrane proteins?
stabilizing temperature acting as enzymes acting as channels acting as
carriers
Answer:
stabilizing temperature
Question: A primary active transport process is one in which
__________.
molecules pass directly through the phospholipid bilayer of the plasma
membrane molecules move across the plasma membrane without an
input of energy the plasma membrane folds inward to form a vesicle
containing extracellular material molecules move through transport
proteins that have been activated by ATP an intracellular vesicle fuses
with the plasma membrane and releases its contents to the extracellular
fluid
Answer:
molecules move through transport proteins that have been activated by ATP
Question: Some transport processes use transport proteins in the plasma
membrane, but do not require ATP. This type of transport is known as
_____.
facilitated diffusion exocytosis active transport simple diffusion
endocytosis
Answer:
facilitated diffusion
Question: The majority of water molecules moving across plasma
membranes by osmosis do so via a process that is most similar to ____.
simple diffusion active transport facilitated diffusion a process that
requires energy from the cell cotransport
Answer:
facilitated diffusion
,Question: The sodium-potassium pump uses ATP to move sodium and
potassium ions across the plasma membrane. This statement describes
_____.
primary active transport secondary active transport simple diffusion
exocytosis facilitated diffusion
Answer:
primary active transport
Question: A vesicle fuses with the plasma membrane and releases its
contents to the extracellular fluid. This statement describes _____.
active transport facilitated diffusion endocytosis exocytosis simple
diffusion
Answer:
exocytosis
Question: Solution A and solution B are separated by a semipermeable
membrane. Solution A contains 1% glucose, solution B contains 5%
glucose. By diffusion:
water will move from solution B to solution A. water will move from
solution A to solution B. glucose will move from solution B to solution
A. glucose will move from solution A to solution B.
Answer:
glucose will move from solution B to solution A.
Question: Solution A and solution B are separated by a semipermeable
membrane. Solution A contains 1% glucose, solution B contains 5%
glucose. By osmosis:
glucose will move from solution A to solution B. glucose will move
from solution B to solution A. water will move from solution A to
solution B. water will move from solution B to solution A.
Answer:
water will move from solution A to solution B.
, Question: If the ECF is more concentrated than the cytosol, then the
ECF is:
monotonic. hypotonic. isotonic. hypertonic.
Answer:
hypertonic.
Question: If the ECF is hypotonic, the cell will:
divide. swell. shrink. remain unchanged.
Answer:
swell.
Question: Which of the following best explains diffusion?
movement of molecules from an area of high concentration to an area of
low concentration movement of molecules from where there are fewer
of them to where there are more exchange of nonpolar molecules for
polar molecules movement of molecules farther away from equilibrium
Answer:
movement of molecules from an area of high concentration to an area of low concentration
Question: Which of the following is most likely to move through the
cell membrane by facilitated diffusion?
CO2 O2 Na+ small lipids
Answer:
Na+
Question: What is the basic difference between simple diffusion and
facilitated diffusion across a cell membrane?
In simple diffusion, molecules move down the concentration gradient
but in facilitated diffusion molecules move up the concentration
gradient. Simple diffusion requires molecules to move through special
doorways in the cell membrane. Simple diffusion is passive but
facilitated diffusion is an active process that uses energy. In facilitated
diffusion, molecules only move with the aid of a protein in the
membrane.
Answer:
In facilitated diffusion, molecules only move with the aid of a protein in the membrane.
