Textbook Question
Contrast symports and antiports.
1
views
Ch. 3 - Cell Structure and Function
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302
Not the one you use?Change textbookSelect a different textbook
Table of contents
- Ch. 1 - A Brief History of Microbiology31
- Ch. 2 - The Chemistry of Microbiology28
- Ch. 3 - Cell Structure and Function39
- Ch. 4 - Microscopy, Staining, and Classification25
- Ch. 5 - Microbial Metabolism51
- Ch. 6 - Microbial Nutrition and Growth37
- Ch. 7 - Microbial Genetics51
- Ch. 8 - Recombinant DNA Technology21
- Ch. 9 - Controlling Microbial Growth in the Environment36
- Ch. 10 - Controlling Microbial Growth in the Body: Antimicrobial Drugs21
- Ch. 11 - Characterizing and Classifying Prokaryotes29
- Ch. 12 - Characterizing and Classifying Eukaryotes34
- Ch. 13 - Characterizing and Classifying Viruses, Viroids, and Prions23
- Ch. 14 - Infection, Infectious Diseases, and Epidemiology35
- Ch. 15 - Innate Immunity34
- Ch. 16 - Adaptive Immunity21
- Ch. 17 - Immunization and Immune Testing29
- Ch. 18 - Immune Disorders22
- Ch. 19 - Pathogenic Gram-Positive Bacteria25
- Ch. 20 - Pathogenic Gram-Negative Cocci and Bacilli28
- Ch. 21 - Rickettsias, Chlamydias, Spirochetes, and Vibrios25
- Ch. 22 - Pathogenic Fungi47
- Ch. 23 - Parasitic Protozoa, Helminths, and Arthropod Vectors44
- Ch. 24 - Pathogenic DNA Viruses23
- Ch. 25 - Pathogenic RNA Viruses30
- Ch. 26 - Applied and Industrial Microbiology29
- Ch. 27 - Microbial Ecology and Microbiomes22
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302Not the one you use?Change textbook
Chapter 3, Problem 15
Compare and contrast three types of passive transport across a cell membrane.
Verified step by step guidance1
Identify the three main types of passive transport across a cell membrane: simple diffusion, facilitated diffusion, and osmosis.
Explain simple diffusion as the movement of small or nonpolar molecules directly through the phospholipid bilayer from an area of higher concentration to an area of lower concentration without the use of transport proteins.
Describe facilitated diffusion as the movement of molecules that cannot easily cross the membrane (such as ions or polar molecules) through specific transmembrane proteins like channel proteins or carrier proteins, still moving down their concentration gradient without energy input.
Define osmosis as the passive transport of water molecules across a selectively permeable membrane, moving from an area of lower solute concentration to an area of higher solute concentration to balance solute concentrations on both sides.
Compare the three by highlighting that all move substances down their concentration gradients without energy, but differ in the types of molecules transported and whether transport proteins are required.
Verified video answer for a similar problem:
This video solution was recommended by our tutors as helpful for the problem above.
Video duration:
2mWas this helpful?
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Diffusion
Diffusion is the passive movement of molecules from an area of higher concentration to lower concentration until equilibrium is reached. It does not require energy and typically involves small, nonpolar molecules like oxygen and carbon dioxide passing directly through the lipid bilayer.
Recommended video:
Guided course
02:10
Diffusion
Facilitated Diffusion
Facilitated diffusion is the passive transport of molecules across the membrane via specific carrier or channel proteins. It allows larger or polar molecules, such as glucose or ions, to move down their concentration gradient without energy input.
Recommended video:
Guided course
05:10Simple and Facilitated Diffusion
Osmosis
Osmosis is the passive diffusion of water molecules through a selectively permeable membrane from a region of low solute concentration to high solute concentration. It balances solute concentrations on both sides of the membrane without requiring cellular energy.
Recommended video:
Guided course
08:25Osmosis
Related Practice
Textbook Question
What is the function of glycocalyces and fimbriae in forming a biofilm?
5
views
Textbook Question
What factors may prevent a molecule from moving across a cell membrane?
1
views
Textbook Question
Contrast the following active processes for transporting materials into or out of a cell: active transport, group translocation, endocytosis, exocytosis.
6
views
Textbook Question
Dipicolinic acid is an important component of __________ .
a. Gram-positive archaeal walls
b. cytoplasmic membranes in eukaryotes
c. endospores
d. Golgi bodies
1
views
Textbook Question
Inclusions have been found to contain ___________ .
a. DNA
b. sulfur globules
c. dipicolinic acid
d. tubulin