Bio 115 Final Exam 100% Correct!

Hydrogen Bonds - ANSWERTwo molecules are bonded together due to the attraction of their opposite, yet partial charges. Polar Covalent - ANSWERTwo atoms are bonded together when valence electrons are shared between the two. The electrons spend more time circulating around the nucleus of the first atom than the second. Nonpolar Covalent - ANSWERTwo atoms are bonded together when valence electrons are shared between the two. The electrons spend an equal amount of time around the nucleus of each atom. Ionic - ANSWERTwo atoms are bonded together when a valence electron is donated from one atom and received by the second. The resulting charge of the two atoms leads to their attraction to one another. Which of the following statements about water is true? A. Hydrogen bonds are more stable in liquid water than in ice. B. Water will dissolve molecules that are either polar or that have a charge. C. Water molecules will not form hydrogen bonds with other water molecules. D. All of the above statements are true. E. None of the above statements are true. - ANSWERWater will dissolve molecules that are either polar or that have a charge True or False? Amino acids are linked together by hydrolysis reactions to form proteins - ANSWERFalse True or False? Enzymes increase the speed of certain biological chemical reactions by bringing reactants into physical contact with one another. - ANSWERTrue The type of bond that links two nucleotides along a single strand of DNA is known as a _________ bond. - ANSWERPhosphodiester The type of bond that links two nucleotides between two different strands of DNA is known as a _________ bond. - ANSWERHydrogen The type of bond that links two nucleotides along a single strand of RNA is known as a _________ bond. - ANSWERPhosphodiester True or False? Nucleotides can be broken apart from a single strand of RNA by