Study Guide for Exam 2 in BIOL 1441
Study Guide for Exam 2 in BIOL 1441 BIOL 1441 - 002
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This 5 page Study Guide was uploaded by Kristin O'Flaherty on Thursday October 22, 2015. The Study Guide belongs to BIOL 1441 - 002 at University of Texas at Arlington taught by Shawn Christensen in Fall 2015. Since its upload, it has received 574 views. For similar materials see CELL AND MOLECULAR BIOLOGY in Biology at University of Texas at Arlington.
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Date Created: 10/22/15
Study Guide for Exam 2 in Biol 1441 1 The overall efficiency of respiration the percentage of the energy released that is saved in ATP is approximately Ch 9 a 05 b 2 c 35 d 87 e 100 A protein that ultimately functions in the plasma membrane of a cell was most likely to have been synthesized Ch 6 a In the rough endoplasmic reticulum b In the smooth endoplasmic reticulum c In the ribosomes of the mitochondria d In the plasma membrane e On the free cytoplasmic ribosomes Molecular oxygen is produced during Ch 10 a Reenergization of electrons by PSI b Cyclic electron ow during the light reactions c Linear electron ow during the light reactions d Glycolysis e The Calvin Cycle A selectively permeable membrane separates two solutions Water is able to pass through this membrane however sucrose a disaccharide and glucose a monosaccharide cannot pass The membrane separates a 02molar sucrose solution from a 02molar glucose solution With time how will the solutions change Ch 7 a The sucrose solution is hypertonic and will gain water because the total mass of sucrose is greater than that of glucose b Nothing will happen because the two solutions are isotonic to one another c After the sucrose dissociates into two monosaccharides water will move via osmosis to the side of the membrane that contains the dissociated sucrose d Water will leave the sucrose solution because the sucrose molecule is a disaccharide and thus larger that the monosaccharide glucose e Water will enter the sucrose solution because the sucrose molecule is a disaccharide and thus larger that the monosaccharide glucose Which of the following statements about allosteric proteins isare true Ch 8 a They are sensitive to environmental conditions b They are acted on by inhibitors c They exist in active and inactive conformations d All of the first 3 listed responses are correct e None of the first 3 listed responses are correct Sports psychologists at an Olympic training center wanted to monitor athletes to determine at what point their muscles were functioning anaerobically They could do this by checking for a buildup of which of the following compounds Ch 9 7 10 a ATP b Oxygen c Carbon Dioxide d Lactate e ADP A nursing infant is able to obtain disease fighting antibodies which are large protein molecules from its mother s milk These molecules probably enter the cells lining the baby s digestive tract via which process Ch 7 a Endocytosis b Exocytosis c Passive transport d Osmosis e Active transport Basal bodies are most closely associated with which of the following cell components Ch 6 a Cilia b Golgi apparatus c Central vacuole d Mitochondria e Nucleus When a poison such as cyanide blocks the electron transport chain glycolysis and the citric acid cycle also eventually stop working Which of the following is the best explanation for this Ch 9 a The uptake of oxygen stops because electron transport was inhibited b Electrons are no longer available from the electron transport chain to power glycolysis and the citric acid cycle c NAD and FAD are not available for glycolysis and the citric acid cycle to continue d A high level of NADH is present in the cell e They run out of ADP When 1 mole of ATP is hydrolyzed in a test tube without an enzyme about twice as much heat is given off as when 1 mole of ATP is hydrolyzed in a cell Which of the following best explains these observations Ch 8 a The amount of heat released by a reaction has nothing to do with the free energy change of the reaction b Cells have the ability to store heat this cannot happen in a test tube c In cells ATP is hydrolyzed to ADP and Pi but in the test tube it is hydrolyzed to carbon dioxide and water d In the cell the hydrolysis of ATP is coupled to other endergonic reactions e Cells are less efficient at energy metabolism that reactions that are optimized in a test tube 11 Which of the following statements correctly describes some aspect of ATP hydrolysis being used to drive the active transport of an ion into the cell AGAINST the ion s concentration gradient Ch 8 a This is an example of energy coupling b Neither ATP hydrolysis nor active transport is spontaneous c ATP is acting as a transport protein to facilitate the movement of the ion across the plasma membrane d The hydrolysis is endergonic and the active transport is exergonic e Both ATP hydrolysis and active transport are spontaneous because they result in an increase in entropy of the system 12 Which of the following events accompanies the conversion of pyruvate to acetyl CoA before the citric acid cycle Ch 9 a Release of C02 and synthesis of NADH b Release of C02 and release of coenzyme A c Regeneration of NAD d Removal of coenzyme A e Formation of CO2 and synthesis of ATP 13 Which of the following statements is true about cell fractionation Ch 6 a Cell fractionation requires the use of a scanning electron microscope b Cell fractionation uses strong acids to break apart cells c Cell fractionation is no longer used in modern cell biology d Cell fractionation separates cells into their component parts e None of the listed responses are correct 14 Which of the following determines the sign of DeltaG for a reaction Ch 8 a The enzyme catalyzing the reaction s having a high affinity strength of binding for the reactants b The free energy of the reactants c The free energy of the products d The enzyme catalyzing the reaction s having a low affinity for the products e The free energy of the reactants and the free energy of the products 15 Cilia and agella move due to the interaction of the cytoskeleton with which of the following a Tubulin b Mitochondria c Pseudopodia d Motor proteins e Actin 16 In the overall process of glycolysis and cellular respiration is oxidized and is reduced Ch 9 a ATP oxygen b Glucose oxygen c CO2 water d Glucose ATP 17 18 19 20 21 22 e Oxygen ATP What structure is formed by the reaction center lightharvesting complexes and primary electron acceptors that cluster and is located in the thylakoid membrane Ch 10 a ATP synthase b The uorescence center c The electron transport chain d NADP reductase e The photosystem Bacterial cells are prokaryotic Unlike a typical eukaryotic cell they Ch 6 a Lack chromosomes b Have a smaller nucleus c Have no membranebounded organelles in their cytoplasm d Have no ribosomes e Lack a plasma membrane A particular cell has a nucleus and chloroplasts in addition to the fundamental structures required by all cells Based on this information this cell could be Ch 6 a A cell from a pine tree b A bacterium c A cell from the intestinal lining of a cow d A yeast fungus cell e A photosynthetic protist cell or a plant cell Metabolic pathways in cells are typically far from equilibrium Which of the following processes tends to keep these pathways away from equilibrium Ch 8 a The continuous removal of the products of a pathway to be used in other reactions b An input of free energy from outside the pathway c An input of heat from the environment d A and B e A B and C Which of the following is a correct difference between active transport and facilitated diffusion Ch 7 a Facilitated diffusion requires carrier proteins but active transport requires channel proteins Active transport involves transport proteins and facilitated diffusion doesn t Active transport requires energy from ATP and facilitated diffusion doesn t Facilitated diffusion involved transport proteins and active transport doesn t Facilitated diffusion can move solutes against a concentration gradient and active transport can t Which of the following organelles might be found inside other organelles Ch 6 a Mitochondria Ribosomes Transport vesicles The nucleolus No organelles are found inside of other organelles 9909 9906 23 Which of the following frunctions of membrane proteins is important in tissue formation during embryonic development in animals Ch 7 a Membrane proteins form channels which move substances across the membrane b Membrane proteins possess enzymatic activity c Membrane proteins with short sugar chains for identification tags that are recognized by other cells d Membrane proteins attach the membrane to the cytoskeleton e All of the listed responses are correct 24 Which of the following is FALSE Ch 6 a Mitochondira have more than one membrane b Mitochondria contain ribosomes in the intermembrane space c The folds of the inner mitochondrial membrane are called cristae d Mitochondria possess their own DNA e Mitochondria are involved in energy metabolism 25 According to the second law of thermodynamics which of the following is true Ch 8 a All reactions produce some heat b Energy conversions increase the order in the universe c The decrease in entropy associated with life must be compensated for by increased entropy in the environment in which life exists d The entropy of the universe is constantly decreasing e The total amount of energy in the universe is constant Answers 1 2 3 4 5 6 7 8 9 l l l l OWOWOUD JOD JWUW P Pi
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