ESSENTIAL CELL BIOLOGY-TEXT (PB)
ESSENTIAL CELL BIOLOGY-TEXT (PB)
5th Edition
ISBN: 9780393680324
Author: ALBERTS
Publisher: NORTON
bartleby

Concept explainers

bartleby

Videos

Question
Book Icon
Chapter 12, Problem 1Q

A.

Summary Introduction

To write: An equation to describe the working of transporter that mediates the transport of a solute down its concentration gradient.

Introduction: Transporter enhances the movement of most small, water-soluble, organic molecules and some inorganic ions across the cell membrane. The cell membrane contains transporter that brings nutrient such as sugar, amino acid, as like enzymes bind with substrate molecule.

A.

Expert Solution
Check Mark

Explanation of Solution

Transporters are highly selective toward the solute and sometimes they allow single molecules to transport. An analogous equation shown below describes the movement of a solute mediated by a transporter.

T+STST+S*............................ (1)

In equation (1), T is denoted by transporter, S is denoted by solute, S* is the solute on the opposite side of the membrane where the solute molecule is same but it is located in different atmosphere.

B.

Summary Introduction

To explain: The function of a transporter from the above given equation (1).

Introduction: Transporter enhances the movement of most small, water-soluble, organic molecules and some inorganic ions across the cell membrane. The cell membrane contains transporter that brings nutrient such as sugar, amino acid, as like enzymes bind with substrate molecule.

B.

Expert Solution
Check Mark

Explanation of Solution

Equation (1) is useful as it represents the binding step followed by a delivery step. It is similar to the mathematical treatment explained for enzymes. In this equation, KM value describes the transporters that represents their empathy for the solute and Vmax value that explains the supreme rate of relocation during transport. To deliver the accurate conformational changes during the transport across the membrane, the following equations shall be given:

T+STST*S* T* + S*........................... (2)TT*..................................................................(3)

In the above equations, T* represents the transporter after the respective conformational changes that show its solute binding area on the opposite portion of the membrane. Equation (3) represents that after conformational changes, the transporter returns to its starting conformation. In the cell’s plasma membrane, the transporter acts as the pathways of transportation of molecular elements across cell and also in mitochondrial membrane.

C.

Summary Introduction

To explain: The equation (1) is an inappropriate description of channel function.

Introduction: Transporter enhances the movement of most small, water-soluble, organic molecules and some inorganic ions across the cell membrane. The cell membrane contains transporter that brings nutrient such as sugar, amino acid, as like enzymes bind with substrate molecule.

C.

Expert Solution
Check Mark

Explanation of Solution

In equation (1), the transporter is to guide and propel the complex traffic of solute into and out of the cell through transportation pathway between the cytosol and different membrane-bound organelles. In this equation, neither the channel nor the behavior of channel is described. When solutes are transported through the membrane, it binds with the transporter. However, in the case of transportation through channels, the solutes do not bind with any transporter.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
19. On the diagram below a. Label the three pictures as: DNA; polypeptide; or RNA. b. Label the arrows as: translation or transcription/RNA processing. c. Add the following details to the diagram. Promoter region TATA box Transcription start site Transcription terminator Intron (A,B,C,D) Exons (1,2,3,4,5) Splice sites 5' cap 5' UTR (untranslated region) 3' poly A tail 3' UTR (untranslated region) Translational start (AUG) Translational stop (UGA, UAG, or UAA) N and C ends of polypeptide 0000
Match the letter labels in the figure below to the terms. Some letter labels are not used. MNNNNNNIN M C B A M D F E H K G 8
The diagram below illustrates a quorum sensing pathway from Staphylococcus aureus. Please answer the following questions. 1. Autoinduction is part of the quorum sensing system. Which promoter (P2 or P3) is critical for autoinduction? 2)This staphylococcus aureus grows on human wounds, causing severe infections. You would like to start a clinical trial to treat these wound infections. Please describe: a) What molecule do you recommend for the trial. Why? b) Your trial requires that Staphylococcus aureus be isolated from the wound and submitted to genome sequencing before admittance. Why? What are you testing for?  3) If a mutation arises where the Promoter P3 is constitutively active, how would that influence sensitivity to AIP? Please explain your rationale. 4) This pathway is sensitive to bacterial cell density. Describe two separate mutation that would render the pathway active independent of cell density. Briefly explain your rationale. Mutation 1 Mutation 2
Knowledge Booster
Background pattern image
Biology
Learn more about
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
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Text book image
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Text book image
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Text book image
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Text book image
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Text book image
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education
Anaerobic Respiration; Author: Bozeman Science;https://www.youtube.com/watch?v=cDC29iBxb3w;License: Standard YouTube License, CC-BY