CHEM 210 FINAL EXAM WITH COMPLETE SOLUTIONS.

CHEM 210 FINAL EXAM WITH
COMPLETE SOLUTIONS




T/F nitrogen is called the superglue of the chemical world - CORRECT ANSWER-false
N N N N N N N N N N N N




T/F large elements, such as strontium, are common in biomolecules - CORRECT
N N N N N N N N N N N




ANSWER-false
N




T/F the time it takes for a compound to flow through a metabolic pathway is called the payoff
N N N N N N N N N N N N N N N N N




phase - CORRECT ANSWER-false
N N N N




T/F proteins, carbohydrates, and fats all get broken down into acetyl-CoA - CORRECT
N N N N N N N N N N N N




ANSWER-true
N




T/F a fat is a lipid molecule that is a solid at room temperature - CORRECT ANSWER-true
N N N N N N N N N N N N N N N N




in DNA, guanine always pairs with ____
N N N N N N




A. thymine
N




B. guanine
N




C. uracil
N




D. cytosine
N




E. both A and B - CORRECT ANSWER-D. cytosine
N N N N N N N N




water is considered a polar solvent due to attractive forces known as hydrogen bonds. a
N N N N N N N N N N N N N N




hydrogen bond is _____
N N N N




A. a bond that is stronger than a covalent bond
N N N N N N N N N




B. an attractive force between molecules where partially positive hydrogen atoms are
N N N N N N N N N N N




attracted to partially negative atoms of F, O, or N
N N N N N N N N N N




C. the polar O-H bond in water
N N N N N N

, D. an ionic bond between H and another atom
N N N N N N N N




E. a covalent bond between H and O - CORRECT ANSWER-B. an attractive force between
N N N N N N N N N N N N N N




molecules where partially positive hydrogen atoms are attracted to partially negative
N N N N N N N N N N N




atoms of F, O, or N
N N N N N N




what is a unique molecule. which of the following contributes to water's unique place in the
N N N N N N N N N N N N N N N




chemical world?
N N




A. the geometry of the molecule
N N N N N




B. the polarity of the O-H bonds
N N N N N N




C. the ability of water molecules to hydrogen bond
N N N N N N N N




D. the bond angle of water
N N N N N




E. all of the answers are correct - CORRECT ANSWER-E. all of the answers are correct
N N N N N N N N N N N N N N N




the H+ concentration of a solution is 7.9x10^-13M. what is the pH?
N N N N N N N N N N N




A. -6.70N




B. 6.70 N




C. 11.17N




D. -12.1N




E. 12.1 - CORRECT ANSWER-E. 12.1
N N N N N




which of the following is the enthalpy change of a reaction?
N N N N N N N N N N




A. delta G
N N




B. delta S
N N




C. delta H
N N




D. delta F
N N




E. none of the above - CORRECT ANSWER-C. delta H
N N N N N N N N N




a globular protein is an example of a protein _____
N N N N N N N N N




A. motifN




B. conformation
N




C. secondary structure
N N




D. quaternary structure
N N




E. amino acid - CORRECT ANSWER-B. conformation
N N N N N N




any molecule or ion that is necessary for an enzyme's function is called a ____
N N N N N N N N N N N N N N




A. cofactor
N




B. coreactant
N




C. coproduct
N




D. bienzyme
N




E. both B and C - CORRECT ANSWER-A. cofactor
N N N N N N N N




a(n) ____ is a compound that binds to an enzyme in such a way that the enzyme slows
N N N N N N N N N N N N N N N N N




down or stop the enzyme reactions.
N N N N N N




A. ligand
N




B. substrate
N




C. inhibitor
N