BioChemistry > QUESTIONS & ANSWERS > Biochemistry 1430 for nurses Midterm Review Questions and Answers (All)

Biochemistry 1430 for nurses Midterm Review Questions and Answers

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Four key biomolecules of life Correct Answer proteins, nucleic acids, lipids, and carbohydrates Weak bonds Correct Answer hydrogen bonds and van der Waals interactions. Allow for dynamic interactio ... ns and permit energy and information to move about the cell and organism Hydrophobic molecules Correct Answer fats and steroids in which they repel water, they cannot interact with water at all. Brownian motion Correct Answer the chaotic movement of colloidal particles, caused by collision with particles of the solvent in which they are dispersed. Is responsible for initiating many biochemical interactions. Thermal Noise Correct Answer Associated with rapid movement of electrons within a conductor due to thermal agitation Humans are __% water Correct Answer 65 Cells are ___% water Correct Answer 70 Water is composed of Correct Answer 2 hydrogen and 1 oxygen, water is polar Hydrogen bond Correct Answer Attraction between a slightly positive hydrogen atom and a slightly negative atom. Non-polar, hydrophobic Correct Answer Water fearing Readily reversible, non covalent molecular interactions are essential interactions in the flow of energy and information b/c Correct Answer 1. Plays roles in faithful replication od DNA 2.the folding of proteins 3.detection of molecular signals 3 fundamental noncovalent bonds Correct Answer (1) Ionic bonds or electrostatic interactions (2) hydrogen bonds (3) Van Der Waals interactions Ionic bonds Correct Answer also called electrostatic interactions. Are the interactions between distinct electrical charges on atoms. They usually take place between atoms [Show More]

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