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- Predicting how variation in membrane lipid composition will affect the fluidity and mobility of integral membrane proteinsProteins may be bound to the exoplasmic or cytosolic face of the plasma membrane by way of covalently attached lip- ids. What are the three types of lipid anchors responsible for tethering proteins to the plasma membrane bilayer? Which type is used by cell surface proteins that face the external medium? By glycosylated proteoglycans?Cell Membrane Coloring WorksheetComposition of the Cell Membrane & FunctionsThe cell membrane is also called the ___PlasmaMembrane____________ membrane and is made of a phospholipid_____________. The phospholipids have a hydrophilic (waterattracting) __________ and two hydrophobic (water repelling) ____________. The head of a phospholipid is made of an alcohol and__________ group, while the tails are chains of ____________.Phospholipids can move _______________ and allow water and other_________ molecules to pass through into or out of the cell. This isknown as simple ____________ because it does not require__________ and the water or molecules are moving __________ theconcentration gradient. SKETCH AND LABEL a phospholipid coloringthe heads red and the tails blue.PHOSPHOLIPID Another type of lipid in the cell membrane is ______________that makes the membrane more fluid. Embedded in the phospholipidbilayer are __________ that also aid in diffusion and in cellrecognition. Proteins…
- Hydropathy plot analysis of your protein of interest reveals a single, prominent hydrophobic peak. However, you later discover that this protein is soluble and not membrane associated. Explain how the hydropathy plot may have been misleading.BIOMOLECULES - Please answer the questions properly. - Multiple choice 1. The following statements are true regarding actin filaments, EXCEPT for one ? A. Nucleotide hydrolysis promotes dissociation of actin filaments B. They require GTP for assembly C. Growth of the actin chain occurs at the plus (+) end D. 2 microfilaments combine to make a coiled filament 2. The side chains of the amino acid residues within an alpha helix is best described by ONE of the following patterns:? A. The side chains point "in" and "back" relative to the turns of the helix. B. The side chains point "out" and "forward" relative to the turns of the helix. C. The side chains point "out" and "back" relative to the turns of the helix. D. The side chains point "in" and "forward" relative to the turns of the helix.Hydrolysis .? And what is endocytosis pinocytosis phagocytosis explain with reactions or diagram.
- Topic: ISOLATION AND CHARACTERIZATION OF PROTEINS 1. Which amino acids contains the following:a. Sulfur/sulfhydryl groupb. Aromatic groupc. Imidazole ringd. Guanidine groupe. Indole ring2. Classify the following proteins to their biological functions (casein, albumin, gluten, andmyoglobin) 3. Which level of protein structure organization are lost hydrolysis and denaturation?4. What is the Beer-Lambert’s Law? Why is it relevant to the quantitative analysis of proteins?The role of GTP hydrolysis in actin polymerization is similar to the role of ATP hydrolysis in tubulin polymerization: both serve to weaken the bonds in the polymer and thereby promote depolymerization. Is that true or false? why?Cholesterol is an integral part of plasma membranes. Based on its structure, where is it found in the membrane? on the extracellular surface embedded with the phospholipid heads within the tail bilayer attached to the intracellular surface
- Proteoglycan aggregates in tissues form hydrated, viscousgels. Can you think of any obvious mechanical reason whytheir capacity to form gels is important to cell function?[Hint: Liquid water is virtually incompressible.]cip sequence rule in ephedrineActivity: Write the line structure of each of the following peptide at pH7 and identify how many peptide bond in each number. 1. Glycyl-valyl-serine 2. Threonyl-cysteine 3. Isoleucyl-methionyl-aspartate
