You are in charge of generating a scaffold for use in tissue engineering applications that behaves similarly to the natural ECM proteins. What proteins might you want to include in your scaffold? None of the above are proteins in the ECM Collagens only O Collagen, fibronectin, and proteoglycans Proteoglycans only Fibronectin only

You are in charge of generating a scaffold for use in tissue engineering applications that behaves similarly to the natural ECM proteins. What proteins might you want to include in your scaffold? None of the above are proteins in the ECM Collagens only O Collagen, fibronectin, and proteoglycans Proteoglycans only Fibronectin only

Lifetime Physical Fitness & Wellness

15th Edition

ISBN:9781337677509

Author:HOEGER

Publisher:HOEGER

Chapter8: Muscular Flexibility

Section: Chapter Questions

Problem 6AYK

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Intermediate filaments (IFs) function to provide mechanical strength to the cell and for internal organization of the cells. The intermediate filament _______________ plays a key role in connecting epithelial cells to the extracellular matrix. The IF binding protein________ plays key role in connecting the IFs in the nucleus with the cytoskeleton in the cytoplasm to help position the nucleus. keratin, SUN-domain protein SUN-domain proteins, lamin lamin, keratin SUN-domain proteins, keratin lamin, SUN-domain protein keratin, lamin
Which of the following is true about plant cellulose synthesis? a.cellulose fibers are arranged in a random mesh b. cellulose synthesis is guided by the actin cytoskeleton c.cellulose synthesis occurs outside the cell d. cellulose is a polypeptide that makes up a plant cell wall Question 3 Which of the following are true about collagen synthesis? 1collagen fibers can be oriented in parallel or in alterating directions 2.collagen is synthesized by fibroblasts 3a collagen molecule is a double helix 4collagen is the most abundant protein in the animal extracellular matrix 5collagen molecules are assembled into fibers in the cytoplasm before secretion
Discuss the following statement: “if plant cells contained intermediate filaments to provide the cells with tensile strength, their cell walls would be dispensable.”
Neurofilament proteins assemble into long, intermediate filaments , found in abundance running along the length of nerve cell axons. The C-terminal region of these proteins is an unstructured polypeptide, hundreds of amino acids long and heavily modified by the addition of phosphate groups. The term “polymer brush” has been applied to this part of the neurofilament. can you suggest why?
you discover that myoglobin has an isoelectric point of 6.8 and chymotrypsin has an isoelectric point of 8.75 after performing the technique called isoelectric focusing which of the following proteins would you expect to find closer to the negative electrode - myoglobin - chymotripsin - equal migration - not enough info - iso focusing separate proteins based on cell size not isoelectric point
What is one feature of fibrillar collagen that contributes to its strength? They form crosslinks between glycine and alanine residues on adjacent collagens. They form crosslinks between lysine and hydroxylysine residues on one collagen molecule. They form crosslinks between glycine and alanine residues on one collagen molecule. They form crosslinks between lysine and hydroxylysine residues on adjacent collagen molecules.
Collagen 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.
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 filament
_________________________ is responsible for bringing ATP-actin to the _________ of microfilaments. In contrast, ____________________ is responsible for destabilizing the ________________ end of microfilaments. thymosin; pointed; cofilin; pointed profilin; barbed; cofilin; pointed cofilin; barbed; profilin; pointed formin; barbed; G actin; pointed
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?
Microfilaments are long filamentous proteins made up of many globular proteins. What main protein are microfilaments composed of?
Please explain how an intermediate filament is similar and different in a normal skin cell while in a dry skin cell, dividing cell and normal skin tissue