Biology: Life on Earth
10th Edition
ISBN: 9780321729712
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: Benjamin Cummings
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Chapter 5, Problem 3FTB
Facilitated diffusion involves either _____ proteins or ____ proteins. Diffusion directly through the phospholipid bilayer is called ______ diffusion and molecules that take this route must be soluble in ____ or be very small and have no net electrical charge.
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Students have asked these similar questions
Crossing a cell membrane by simple diffusion can be distinguished from facilitated
diffusion by which of the following:
Select all that apply.
Simple diffusion moves molecules down a concentration gradient while
facilitated diffusion moves molecules up a concentration gradient
Simple diffusion does not require membrane proteins; facilitated diffusion
requires specific membrane proteins
Simple diffusion does not require energy; facilitated diffusion requires energy
Simple diffusion is not saturable; facilitated diffusion rates are limited by the
number of functional membrane proteins and can be saturated
The cytoplasm of a certain cell is composed of a
solution that is 98% water, 2% solutes. Consider the
solution shown in the beaker in this picture:
FOOE
OOS
Foor
solution.
[Select]
Cytoplasm is 98% water,
2% solutes.
The solution in the beaker would be considered
when compared to
[Select]
The plasma membrane is
impermeable to solutes.
Beaker solution
is 98% water,
2% solutes
the cell.
We would expect that the cell would
[Select]
if it was placed in the
would account for
whatever changes might occur to the volume of the
cytoplasm of the cell when it is placed in the solution.
Below are listed molecules with different chemical characteristics. Knowing that all molecules will eventually diffuse across a phospholipid bilayer, select the list that most accurately predicts the relative rates of diffusion of these molecules (fastest to slowest) across a biological membrane.
alanine, propanol, sodium, estrogen
sodium, propanol, alanine, estrogen
estrogen, propanol, sodium, alanine
estrogen, propanol, alanine, sodium
Chapter 5 Solutions
Biology: Life on Earth
Ch. 5 -
1. Membranes consist of a bilayer of ________....Ch. 5 - A membrane that is permeable to some substances...Ch. 5 - Facilitated diffusion involves either _____...Ch. 5 - Prob. 4FTBCh. 5 -
5. After each molecule, place the two-word term...Ch. 5 - Prob. 6FTBCh. 5 - Describe and diagram the structure of a plasma...Ch. 5 - Prob. 2RQCh. 5 - What are the five categories of proteins commonly...Ch. 5 - Prob. 4RQ
Ch. 5 -
5. Define hypotonic, hypertonic, and isotonic....Ch. 5 -
6. Describe the following types of transport...Ch. 5 - Name the protein that allows facilitated diffusion...Ch. 5 - Imagine a container of glucose solution, divided...Ch. 5 - Prob. 9RQCh. 5 -
1. Different cells have different plasma...Ch. 5 - Predict and sketch the configuration of...Ch. 5 - The fluid portion of blood, in which red blood...Ch. 5 - Some cells in the nervous system wrap themselves...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- In the fluid mosaic model: plasma membrane proteins orient their hydrophilic sides toward the internal bilayer. phospholipids often flip-flop between the inner and outer layers. the mosaic refers to proteins attached to the underlying cytoskeleton. the fluid refers to the phospholipid bilayer. the mosaic refers to the symmetry of the internal membrane proteins and sterols.arrow_forwardDistinguish between the following pairs of terms: a. diffusion; osmosis b. passive transport; active transport c. endocytosis; exocytosisarrow_forwardWhich plasma membrane component can be either found on its surface or embedded in the membrane structure? a. protein b. cholesterol c. carbohydrate d. phospholipidarrow_forward
- Why is it advantageous for the cell membrane to be fluid in nature?arrow_forwardThe tails of the phospholipids of the plasma membrane are composed of _____ and are _____? a. phosphate groups; hydrophobic b. fatty acid groups; hydrophilic c. phosphate groups; hydrophilic d. fatty acid groups; hydrophobicarrow_forwardThe principal force driving movement in diffusion is______. a. temperature b. particle size c. concentration gradient d. membrane surface areaarrow_forward
- Visit this link (http://openstaxcollege.org/l/diffusion) to see diffusion and how it is propelled by the kinetic energy of molecules in solution. How does temperature affect diffusion rate, and why?arrow_forwardCell membranes consist mainly of a _________. a. carbohydrate bilayer and proteins b. protein bilayer and phospholipids c. phospholipid bilayer and proteinsarrow_forwardDefine and provide an example for each of the following: simple diffusion, facilitated diffusion, osmosis, passive transport and active transport.arrow_forward
- Which of the following are features of facilitated diffusion? There may be more than one correct answer, select all that apply. Requires energy Movement assisted by proteins Can include passive diffusion Depends on ATP hydrolysis Can include ion transport down its concentration gradient in a cell (high to low concentration)arrow_forwardWhich of the following statements about diffusion is correct? It is an active process in which molecules move from a region of lower concentration to one of higher concentration. It is very rapid over long distances. It requires an expenditure of energy by the cell. It is a passive process in which molecules move from a region of lower concentration to a region of higher concentration. It is a passive process in which molecules move from a region of higher concentration to a region of lower concentration.arrow_forwardFacilitated diffusion differs from active transport in that facilitated diffusion transports against a concentration gradient while active transport does not facilitated diffusion requires expenditure of energy while active transport does not active transport requires expenditure of energy while facilitated diffusion does not facilitated diffusion involves carrier proteins while active transport does not facilitated diffusion works against a concentration gradient while active transport works only with the concentration gradientarrow_forward
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