Name two (2) elements which fit each of these descriptions Found in biological macromolecules Found in biological fluids in ionic form Trace elements
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- Name two (2) elements which fit each of these descriptions
- Found in biological macromolecules
- Found in biological fluids in ionic form
Trace elements
Step by step
Solved in 3 steps
- (b) Explain each of the following in terms of the properties of water. You are not limited to the three properties discussed in part (a): • the role of water as a medium for the metabolic processes of cells • the ability of water to moderate temperature within living organisms and in organisms' environment • the movement of water from the roots to the leaves of plants B IU 0/1A strain of bacteria isolated from an alkaline lake with a high concentrationof arsenic is able to incorporate As into biological molecules. What class of molecules is most likely to contain As as part of its structure?Give the Physiological importance of Group III cations
- Discuss whether the following statement is correct: “An ionic bond can, in principle, be thought of as a very polar covalent bond. Polar covalent bonds, then, fall somewhere between ionic bonds at one end of the spectrum and nonpolar covalent bonds at the other end.”Many proteins that remain homogeneously distributed in water have molecular masses in the range of 30,000 amu and larger. In what sense is it appropriate to consider such suspensions to be colloids rather than solutions? Explain.Solid iron(II) fluoride (FeF2, Ksp= 2.36 x 10-6) is dissolved in water. If 8.1 x 10-3 mol L-1 of iron(II) ion is found to be in solution. Is the solution saturated, unsaturated, desaturated or supersaturated.
- (b) Explain each of the following in terms of the properties of water. You are not limited to the three properties discussed in part (a): •the role of water as a medium for the metabolic processes of cells the ability of water to moderate temperature within living organisms and in organisms' environment • the movement of water from the roots to the leaves of plants B IUX² x, 3 ¢ 0/1 IIExplain the fluidity of liquids in relevance to the postulates of the kinetic molecular theory.The following are basic building blocks of macromolecules match the building blocks with the statements below.
- Hydrogen bonds and van der Waals interactions are much weaker than covalent bonds, yet they are vital to organisms. Explain, providing some specific examples.Why doesn't frozen water sink in liquid water? Is the liquid phase of water more or less dense than the solid phase? What accounts for this pattern? Is this an unusual pattern (by comparison to other molecules)? Explain. Be specific.Which of these statements about the tertiary structure of a polypeptide is(are) untrue? You may select more than one answer. The tertiary structure will be maintained when the solvent is changed from pure water to aqueous acetic acid. O The tertiary structure is determined in part by the formation of disulfide bridges. Hydrogen bonding interactions are responsible for formation of secondary structure but not tertiary structure, O The tertiary structure is rigid and unchanging. O Charge-charge (electrostatic) interactions can be important in the tertiary structure.
