Denaturation is usually associated with transitions from helical structures to random coils. If an Imaginary process were to transform the keratin in your hair from an a-helix to a B-pleated sheet structure, would you call the process denaturation? Explain.

Q: Describe the mechanisms by which microfilaments assemble.

A: The cytoskeleton is a network of protein filaments that provides structural support, shape, and…

Q: Which of the following phospholipids islocalized to a greater extent in the outerleaflet of the…

A: (A) Choline phosphoglycerides are localized to a greater extent in the outer leaflet of the membrane…

Q: Paclitaxel stabilizes microtubules by inhibiting the disassembly of the tubulin subunits.  What…

A: Answer: Paclitaxel stabilizes  microtubules by inhibiting the disassembly of the tubulin subunits…

Q: What typical structure[s] is/are found in integral membrane proteins – how do they span the…

A: Introducion Cell membrane or plasma membrane separates the cell from outside environment. The plasma…

Q: The lipid portion of a typical bilayer is about 3 nm thick. (a) Calculate the number of residues in…

A: Integral membrane protein have generally alpha-helices. Most of the integral membrane protein are…

Q: B) We also know from studies of protein structure that one turn of an a-helix includes 3.6 amino…

A: Given Values: Number of residues in a helical turn = 3.6 amino acids The distance covered by a turn…

Q: 48. Aquaporins are located within the lipid bilayer of a cell's piasma membrane, which act as a…

A: NOTE: DISCLAIMER: Since you have asked multiple questions, we have solved the first question for…

Q: As an example, consider albumin, a protein made of a single polypeptide weighing 66,000 daltons (66…

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Q: . Vwhat do you think holds together the various secondary structural elements in a Stickular…

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Q: A human chromosome (During Mitosis) is 4 µm long but contains 16 mm of DNA. What is the packing…

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Q: Which one of the following statements comparing alpha keratin and silk fibroin is a true statement?…

A: Introduction: Alpha-keratins are proteins that form tough fibers and are found in hair, nails, and…

Q: Why do reticular fibers appear as dark strands on a reticulum-stained slide

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Q: Describe the macromolecular and biophysical characteristics of collagen in the extracellular matrix…

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Q: If there is no helix unwinding proteins and destabilizing proteins present, what would happen?

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Q: Explain why the polypeptide chain of most transmembrane proteins crosses the lipid bilayer as an α…

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Q: Explain why a-keratins that have many disulfide bondsbetween adjacent polypeptide chains are much…

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Q: What is the difference between a phosphoester bondand a phosphodiester linkage?

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Q: Heating collagen, a water-insoluble fi brous protein, forms the jelly-like substance called gelatin.…

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Q: The transmembrane segments of most integral membrane proteins are made of alpha -helical secondary…

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Q: I don't understand, pls help ASAP!

A: The beta-sheet of the spider comprises the alanine.

Q: Regarding actin filaments, colchicine and taxol effects actin polymerization/depolymerization, what…

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Q: A trisaccharide unit of a cellsurface glycoprotein is postulated to play a critical role in…

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Q: Below is a picture of a molecule called StemRegenin-1 (SR-1) interacting with a polypeptide at…

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Q: Describe the stability of collagen by referring to its primary and secondary structures.

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Q: This question has to do with vesicle traffic. (A) What is the complete mechanism for coat assembly…

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Q: If viroids are circular molecules, why are they depictedas hairpins?

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Q: Polypeptides which are normally synthesized in the endoplasmic reticulum are about 20 amino acids…

A: Proteins are synthesized by the ribosomes present on the endoplasmic reticulum, thus they are known…

Q: You incubate actin microfilaments in a monomer concentration equal to the Cc for the (+) end. Which…

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Q: Explain the process by which symmetry is generated in the ER (endoplasmic reticulum) membrane and…

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Q: Compare and Contrast the specimen of Blood culture and Urine culture?

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Q: The usual hydrophobic region of a membrane is around 30 Angstroms. Knowing this, about many amino…

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Q: Collagen is produced as procollagen and then processed to collagen extracellularly. What would…

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Q: calculate the length in (in nm) of a 100-residue segment of the α-keratin coiled coil

A: The α-helix in proteins has 3.6 amino acids per turn and a pitch (the distance needed for one…

Q: In what important ways do the α helix and β sheet structures differ? (b) How are they similar?

A: Secondary structures of protein are local, regular structure of protein backbone which are…

Q: Estimate the number of amino acid residues in each of the two helices of a segment of the…

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Q: below). The red arrow indicates the amino acid lysin (K) that binds to the oxygen of the retinol…

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Q: Phospholipids (Which is charged, what is the functional significance? Are they preferentially…

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Q: Which fibrous protein is found in connective tissue and consists of 3 left-handed helices twisted…

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Q: Tyrosine came from the Greek word "tyros" which means cheese as it was discovered in cheese by…

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Q: You are studying the rate of actin polymerization and depolymerization in an in-vitro hypothetical…

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Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.