True and Faise is a protein found in all eukaryotic cells that provide support t
ID: 300395 • Letter: T
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True and Faise is a protein found in all eukaryotic cells that provide support to the plasma membrane. 41. Spectrin 42. Transmembrane proteins allow large particles to pass through the membrane 43. Certa ain prokaryotes and eukaryotes adapt to changing environments by changing the unsaturated hydrocarbon talls of the plasma membrane 44 Animals, yeast, bacteria, and viruses contain membrane organelles 45. Animals, yeast, bacteria contain a cell membrane 46. Reduction is gaining of H+ and oxidation is gaining of H+ 47, Formation of macromolecules is an energetically favorable reaction that is coupled with formation of monomer an energetically favorable reaction 48. The breakdown of macromolecules is a spontaneous reaction 49. Vmax is used to indicate if the substrate is binding very tightly to the enzyme. A high Vmax indicates weak binding and a low Vmax value indicates tight bonding 50. Activated carriers are large molecules that that contain one energy-rich covalent bondsExplanation / Answer
41) True. Spectrin is a protein found in eukaryotic cells that provide support to plasma membrane. The protein spectrin forms hexagonal structures which form a scaffold and provide support, maintenance, integrity to the plasma membrane.
42)False. The correct statement is transmembrane proteins allow specific proteins and ions to pass through the membrane.
46) Reduction is gaining of H+. But oxidation is loss of hydrogen.
48)False. The right statement is the breakdown of macromolecules is not a spontaneous reaction. Breakdown of macromolecules requires energy.
49) Vmax is the maximum rate of reaction when enzyme is saturated with substrate. Km is Michaelis constant of the enzyme. It is an inverse measure of affinity.
A enzyme which has high Km has low affinity for its substrate and hence need high concentration of substrate to achieve Vmax.". So a high Vmax mean low affinity, low binding.
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