BMS 300 Exam #1 (Already Passed!)

A bond in which electrons are shared between atoms is a _______ bond. correct answers covalent Water molecules are attracted to each other and form ________ bonds. correct answers hydrogen Sodium (Na+) will be attracted to what portion of a water molecule. correct answers oxygen _______ is the diffusion of water molecules through a semipermeable membrane from a place of higher water concentration to a place of lower water concentration until the concentration on both sides is equal. correct answers osmosis In triglycerides, a fatty acid is joined to glycerol by a(n) __________ bond correct answers covalent Two solutions are separated by a membrane that contains only channels permeable to water (aquaporins). The solution in the left-hand compartment contains 30 millimolar NaCl, which dissociates completely, and the right hand compartment contains 60 millimolar urea which is a small, charged molecule that does not dissociate. Which of the following statements is correct? A. Water will not flow because osmotic forces are balanced. B. Water will flow from right to left because the osmotic concentration of the NaCl is higher. C. Water will flow from left to right because the osmotic concentration of the urea is higher. D. Urea will diffuse from right to left. correct answers A The portion of an amino acid that differentiates one amino acid from another is the _____. correct answers R-group In order to form a chain of amino acids, multiple amino acids are linked via what bond? Select all that apply A. Peptide Bond B. Covalent Bond C. Ionic Bond D. Hydrogen Bonds correct answers A and B T/F : Triglycerides are composed of 1 long chain fatty acid and three glycerols correct answers False Which of the following is the least stable form of phospholipid structure? A. Micelle B. Liposome C. Planar bilayer correct answers A