Changed Test Questions back to H W answer Test question 1 Energy is observed in two basic forms potential and kinetic Which of the following does not correctly match these forms with a source of energy a b c d e the energy associated with a gradient of ions across a membrane potential energy the energy related to the height of a bird above the ground potential energy the covalent bonds of a sugar molecule kinetic energy the heat released from a living organism kinetic energy the motion of individual molecules kinetic energy Energy is observed in two basic forms potential and kinetic Which of the following correctly matches these forms with a source of energy the covalent bonds of a sugar molecule potential energy Original question Test Question 2 The mathematical expression for the change in the Gibb s free energy of a system is G H T S Which of the following is not correct a H is the change in enthalpy of the reaction b G is the change in the Gibbs free energy c T is the time of the reaction d S is the change in entropy e All of the above are correct The mathematical expression for the change in free energy of a system is G H T S Which of the following is are correct Original Question G is the change in free energy Test Question 3 Which of the following statements regarding enzymes is not true a Enzymes can cause chemical reactions to occur at temperature where the reaction would not normally occur in the absence of the enzyme b Enzymes change the equilibrium point of the reactions they catalyze c Enzymes lower the activation energy of a reaction d Enzymes increase the rate of a reaction e Most enzymes are proteins Which of the following statements regarding enzymes is true Enzymes increase the rate of a reaction by lowering the activation energy barrier Original Question Test Question 4 The splitting of water to form oxygen gas and carbon compounds occurs during a photosynthesis b both photosynthesis and respiration c d photorespiration e glycolysis respiration Original Question The splitting of carbon dioxide to form oxygen gas and carbon compounds occurs during neither photosynthesis nor respiration Test Question 5 Caffeine is an inhibitor of phosphodiesterase Therefore the cells of a person who has recently consumed coffee would have decreased a phosphorylated proteins b activated G proteins c adenylyl cyclase d AMP e GTP Original Question cAMP Caffeine is an inhibitor of phosphodiesterase Therefore the cells of a person who has recently consumed coffee would have increased levels of Test Question 6 You have the technology necessary to measure each of the following in a sample of animal cells chlorophylls organelle density picograms of DNA cell wall components and enzymatic activity Which would you expect to increase significantly between the end of G1 phase and the beginning of G2 phase a cell wall components b pictograms of DNA c enzymatic activity d organelle density e chlorophylls Original Question You have the technology necessary to measure each of the following in a sample of animal cells chlorophylls organelle density picograms of DNA cell wall components and enzymatic activity Which would you expect to increase significantly from M to G1 organelle density and enzymatic activity Test question 7 The leading and the lagging strands are similar in that a They are both synthesized in the same direction as the movement of the replication fork b They are both synthesized by adding nucleotides to the 3 end of the growing strand c They both require DNA ligase for linking together Okazaki fragments d They are both synthesized continuously Original question The leading and the lagging strands differ in that the leading strand is synthesized in the same direction as the movement of the replication fork and the lagging strand is synthesized in the opposite direction Test Question 8 Which of the following is true of DNA during mitosis It is in the form of highly condensed chromosomes it is called heterochromatin It exists as chromatin it is completely uncoiled and loose It exists as chromatin and is less condensed than mitotic chromosomes a b c d It is in the form of highly condensed chromosomes and is unavailable for gene expression It exists as chromatin and is unavailable for gene expression e Original Question Which of the following is true of DNA during interphase It exists as chromatin and is less condensed than mitotic chromosomes Test Question 9 The lac operon is an inducable operon that is a permanently turned on b c d e turned off when lactose is present in the growth medium turned on when lactose is present in the growth medium turned off whenever tryptophan is added to the growth medium turned on only when tryptophan is present in the growth medium Original Question Why is the lac operon said to be an inducible operon When allolactose is present it induces the inactivation of the lac repressor Test Question 10 Which of the following statements best describes the lytic cycle of lambda phage a The phage DNA is incorporated by crossing over into any nonspecific site on the host b Certain environmental triggers can cause the phage to exit the host genome switching c The viral genes turn the host cell into a lambda producing factory and the host cell cell s DNA from the lytic to the lysogenic then lyses and dies d The phage genome replicates along with the host genome e Most of the prophage genes are activated by the product of a particular prophage gene Original Which of the following statements describes the lysogenic cycle of lambda phage The phage genome replicates along with the host genome Test Question 11 The essential nutrients for proper human nutrition do not include a vitamins b essential fatty acids c essential amino acids d essential nucleic acids e calcium sodium potassium and other minerals Original Question The essential nutrients for proper human nutrition include calcium sodium potassium and other minerals 12 The set of blood vessels with the highest blood pressure is Test Question a b c d e the veins the arteries the arterioles the capillaries the metarterioles Original Question the capillaries Test Question The set of blood vessels with the slowest velocity of blood flow is 13 The long extension of a neuron that carries electrical signals to the point of connection between two communicating neurons is called a b c d e the glia the axon the synapse the dendrite the cell body The point of connection between two communicating neurons is called Original
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