BIOLOGY VOL.1 W/CONNECT PLUS ACCESS
3rd Edition
ISBN: 9781259303784
Author: BROOKER
Publisher: MCG CUSTOM
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Chapter 10.1, Problem 3CC
Summary Introduction
To determine: The outcome when an unstretched elastic fiber, treated with a chemical to break the crosslinks between adjacent elastin proteins, was stretched.
Introduction: The proteins present in the extracellular matrix (ECM) are categorized into adhesive proteins and structural proteins. Collagen and elastin comprise the structural proteins, which provide the ECM its strength and elasticity.
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Students have asked these similar questions
If a cell increases the activity of its actin severing proteins, will it lead in the short term to MORE or
LESS actin polymer mass? Chose the most accurate answer.
Increased severing activity will result in LESS polymer under any conditions.
Increased severing activity will result in NO CHANGE in the total amount of polymer under
any conditions. It simply results in a larger number of smaller filaments.
Increased severing activity will result in MORE polymer under any conditions.
If the concentration of free actin monomers is below the Cc for both the plus and minus ends,
then MORE polymer will result. If the concentration of free actin monomers is above the Cc
for both the plus and minus ends, then LESS polymer will result.
If the concentration of free actin monomers is above the Cc for both the plus and minus ends,
then MORE polymer will result. If the concentration of free actin monomers is below the Cc
for both the plus and minus ends, then LESS polymer will result.
Why is it important for collagen to be strong?
You’re having a discussion with a colleague who insists that intermediate filaments, IFs, provide very little mechanical strength to cells. How can you rebut this and provide quantitative, experimental evidence to measure the strength of an intermediate filament using microscopy?
Chapter 10 Solutions
BIOLOGY VOL.1 W/CONNECT PLUS ACCESS
Ch. 10.1 - What are the four functions of the ECM in animals?Ch. 10.1 - Prob. 2CCCh. 10.1 - Prob. 3CCCh. 10.1 - What structural feature of GAGs gives the ECM a...Ch. 10.1 - Prob. 5CCCh. 10.2 - Prob. 1CCCh. 10.2 - Prob. 2CCCh. 10.2 - Prob. 1BCCh. 10.2 - Prob. 3CCCh. 10.2 - Prob. 1EQ
Ch. 10.2 - Cell Junctions CoreSKILL Explain the experimental...Ch. 10.2 - Prob. 3EQCh. 10.2 - Prob. 4CCCh. 10.2 - Prob. 2BCCh. 10.3 - Tissues Concept Check: Which of the four general...Ch. 10.3 - Prob. 2CCCh. 10 - The function of the extracellular matrix (ECM) in...Ch. 10 - Prob. 2TYCh. 10 - The polysaccharide that form the hard outer...Ch. 10 - Prob. 4TYCh. 10 - Prob. 5TYCh. 10 - Prob. 6TYCh. 10 - Prob. 7TYCh. 10 - Prob. 8TYCh. 10 - A type of tissue that is rich in ECM or has cells...Ch. 10 - Which of the following is not a correct statement...Ch. 10 - Prob. 1CQCh. 10 - Prob. 2CQCh. 10 - Core Concept: Systems We can view the body of a...Ch. 10 - Discuss the similarities and differences between...Ch. 10 - Discuss the similarities and differences between...
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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
- You are studying actin polymerization in the lab. You have Tube 1 with cell extract and ATP, and Tube 2 with cell extract and non- hydrolyzable ATP. Assuming both ATP and non-hydrolyzable ATP bind actin monomers with similar affinities, which of the following would observe in the two tubes? Select all that apply The average length of an actin filament in Tube 1 is longer than the average length of an actin filament in Tube 2 The average length of an actin filament in Tube 2 is longer than the average length of an actin filament in Tube 1 Polymerization of actin filaments is inhibited in presence of non-hydrolyzable АТР Depolymerization of actin filaments is inhibited in presence of non-hydrolyzable АТРarrow_forwardCollagen is produced as procollagen and then processed to collagen extracellularly. What would happen if procollagen was processed within the cell?arrow_forwardCleavage of a phosphate bond is needed for de-polymerization of which mature polymer? Neither microfilaments nor intermediate filaments Microfilaments only Both microfilaments and intermediate filaments Intermediate filaments onlyarrow_forward
- How do the interchain hydrogen bonds and glycosylation contribute to the stability of collagen?arrow_forwardYou hear the comment that the difference between wool and silk is the difference between helical and pleated- sheet structures. Do you consider this a valid point of view? Why or why not?arrow_forwardActin and microtubules have polarity, intermediate filaments have no polarity. What is the main consequence of this difference?arrow_forward
- Which of the following describes an F-actin microfilament? A flexible, helical filament composed of two strands assembled from G-actin 13 protofilaments composed of heterodimers with a hollow core a flexible filament composed of 13 interwoven protofilaments Eight tetramers twisted into a rope-like filamentarrow_forwardThe Collagen proteins, which are strong flexible fibers that resist stretching have four levels of protein structure. In other words, they have the quaternary level. From this you can conclude that Collagen: is not pleated or coiled. Olacks hydrogen bonds. is made of multiple polypeptides. is made of only one polypeptide chain. is not made of amino acids.arrow_forwardCollagen is the main protein component of the ECM. The process of collagen synthesis is complex and it occurs intra- and extra-cellularly involving different organelles. Explain in details the collagen synthesis process.arrow_forward
- Describe the roles of each of the following components of the ECM: a. Collagen fibers b. Glycosaminoglycans c. Reticular fibers d. Proteoglycans e. Glycoproteins (cell-adhesion molecules) f. Elastic fibersarrow_forwardDefine the following terms:a. microfilamentb. F-actinc. G-actind. ameboid movemente. intermediate filamentf. keratinarrow_forwardA fabric company wants to create a new material based on cell research for the army that is able to bear high levels of tension efficiently. What cellular structure should be the target? Microtubules O Intermediate filaments O Actin filaments O Centriols O Piliarrow_forward
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