BMS 300- Exam 1 Quizzes (100% correct answers)

Water molecules are attracted to each other and form ________ bonds. correct answers Hydrogen A bond in which electrons are shared between atoms is a _______ bond. correct answers Covalent Which of the following is NOT true about hydrophilic molecules? correct answers They have equal sharing of electrons across all the atoms in the molecule Which of the following is true about hydrophilic molecules? correct answers They interact with the dipole moment in water They diffuse easily in water __________ pressure is the driving force of water through aquaporins. correct answers Osmotic T or F: Triglycerides are composed of 1 long chain fatty acid and three glycerols correct answers False In triglycerides, a fatty acid is joined to glycerol by a(n) __________ bond. correct answers Covalent (ester) 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? correct answers Water will not flow because osmotic forces are balances The portion of an amino acid that differentiates one amino acid from another is the _____. correct answers R-Group Alpha helix correct answers hydrogen bonding takes place within an amino acid strand Beta-pleated sheet correct answers hydrogen bonding takes place between amino acid strands In order to form a chain of amino acids, multiple amino acids are liked via what bond? correct answers Peptide bond In a phospholipid bilayer, how would hydrophobic and hydrophilic R groups of a transmembrane protein orientate themselves? correct answers Hydrophilic R groups: face inward to form a polar/charged channel Hydrophobic R groups: face outward to interact with phospholipid tails