General Psychology

Home Announcements Assignments Discussions Grades2 People Files Syllabus Quizzes Modules Conferences Collaborations Chat SMART EVALS - Course Evaluations Pre-Test Due Jun 1 at 11:59pm   Points 100   Questions 50   Available until Jun 1 at 11:59pm Time Limit 50 Minutes Instructions This assessment is supposed to be taken cold. It is based on your understanding of course content before the course and will be given again at the end of the course. This will not count against your final grade but you will receive bonus points for this sitting. (I will make the adjustment during the course period. It will read as a score initially.) The results will be compared against your sitting for the post-test to see your statistical improvement. You have 50 minutes to complete this assessment.  Attempt History Attempt Time Score LATEST Attempt 1 50 minutes 50 out of 100  Correct answers are hidden. Score for this quiz: 50 out of 100 Submitted Jun 1 at 5:03pm This attempt took 50 minutes.   Question 1 2 / 2 pts A patient with manic depressive disorder is treated with lithium, which slows the turnover of inositol phosphates and the phosphatidyl inositol derivatives in cells.  Which of the following protein kinases is most directly affected by this drug? Protein kinase C Receptor tyrosine kinase Protein kinase G Protein kinase A Protein kinase M    1      2      3      4      5     IncorrectQuestion 2 0 / 2 pts Noncovalent bonds include all the following except: A carbon-carbon bond An ionic bond A hydrogen bond A van der Waals interaction    1      2      3      4     IncorrectQuestion 3 0 / 2 pts A signal transduction pathway is associated with hormone X and works through g-protein coupled activity.  The receptor for hormone X is most likely to be characterized as a(n) Seven-helix transmembrane domain receptor Intracellular receptor with  a zinc-finger domain Helix-turn-helix traansmembrane domain receptor Transmembrane receptor with a gaunyl cyclase domain Tyrosine kinase domain receptor    1      2      3      4      5     Question 4 2 / 2 pts The synthetic aspect of metabolism is called Anabolism Fermentation Catabolism Oxidative Phosphorylation Chemiosmosis    1      2      3      4      5     Question 5 2 / 2 pts The pathway through which glucose is degraded to pyruvate is called Aerobic respiration Citric acid cycle Oxidation of pyruvate Alcohol fermentation Glycolysis    1      2      3      4      5     IncorrectQuestion 6 0 / 2 pts Which of the following describes a primary property of enzymes? They contain platinum. They lower the activation energy of a reaction. They decrease the rate of a reaction. They bind to a variety of substrates.    1      2      3      4     Question 7 2 / 2 pts A typical cellular enzyme is active In an aqueous solution at a pH of 4. In a nonaqueous solution such as chloroform. In an aqueous solution at 95oC. In an aqueous solution at a pH of 7.    1      2      3      4     IncorrectQuestion 8 0 / 2 pts What is the expected effect on the distribution of plasma membrane proteins between the apical and basolateral regions if tight junctions are dissociated? The distribution stays the same. Apical and basolateral proteins intermix. The distribution becomes even more distinct. The proteins are degraded.    1      2      3      4     IncorrectQuestion 9 0 / 2 pts The succinate-CoQ reductase complex (Complex II) Readily accepts electrons from NADH or FADH2 Contains one of the key enzymes of the citric acid cycle. Pumps only two protons into the mitochondrial matrix. Contains multiple cytochrome complexes.    1      2      3      4     IncorrectQuestion 10 0 / 2 pts Which of the following does not function as an electron carrier? Coenzyme Q Cytochrome c Cytochrome a  H2O    1      2      3      4     IncorrectQuestion 11 0 / 2 pts Lysosomes function to perform all except Synthesize various cellular macromolecules. Carry out digestion of all cytosolic components. Ingest material from the extracellular environment. Recycle cellular material and digest material taken in from the environment.    1      2      3      4     Question 12 2 / 2 pts A defect that inactivates an acid hydrolase required for protein degradation would result in  An increase in the pH of the Lysosome lumen. Degradation of all acid hydrolases. Accumulation of proteins in the cell’s lysosomes. Tay-Sach’s disease.    1      2      3      4     Question 13 2 / 2 pts Functions of tight junctions include all the following except: Separation of extracellular fluids. Sealing of body cavities. Prevention of diffusion of membrane proteins and lipids between apical and basolateral regions. Tight communication and exchange of small molecules between neighboring cells.    1      2      3      4     IncorrectQuestion 14 0 / 2 pts Before pyruvate enters the citric acid cycle, it is decarboxylated, oxidized, and combined with coenzyme A, forming acetyl coA, carbon dioxide, and one molecule of NADH FADH2 ATP ADP C6H12O6    1      2      3      4      5     IncorrectQuestion 15 0 / 2 pts Dehydrogenase enzymes remove hydrogen atoms from fuel molecules and transfer them to acceptors such as  O2 and H2O ATP and FAD NAD+ and FAD CO2 and H2O CoA and Pyruvate    1      2      3      4      5     IncorrectQuestion 16 0 / 2 pts In the process of _____, electron transport and ATP synthesis are coupled by a proton gradient across the inner mitochondrial membrane. Chemiosmosis Deamination Anaerobic respiration Glycolysis Decarboxylation    1      2      3      4      5     Question 17 2 / 2 pts During strenuous muscle activity, the pyruvate in muscle cells may accept hydrogen from NADH to become _____. Acetyl CoA Ethyl Alcohol Lactate Pyruvate Citrate    1      2      3      4      5     Question 18 2 / 2 pts Which of the following is necessary for electron flow from both FADH2 and NADH to O2? Succinate-CoQ reductase complex Coenzyme Q Flavin mononucleotide Fumarate    1      2      3      4     IncorrectQuestion 19 0 / 2 pts Treatment of vesicles with an uncoupler that allows protons to freely move across the vesicle membrane would be expected to  Increase ATP synthesis. Inhibit ATP synthesis. Increase O2 consumption Inhibit electron transport.    1      2      3      4     Question 20 2 / 2 pts The protons created by the splitting of H2O Are transferred to PSII. Are transferred to PSI. Are freely soluble in the thylakoid membrane. Contribute to a proton gradient across the thylakoid membrane.    1      2      3      4     Question 21 2 / 2 pts What is the correct order of information flow in bacterial and eukaryotic cells? DNA --> mRNA-->protein Protein-->mRNA-->DNA DNA-->protein-->mRNA Protein-->DNA-->mRNA mRNA-->protein-->DNA    1      2      3      4      5     IncorrectQuestion 22 0 / 2 pts RNA differs from DNA in that the _____ is substituted for _____. Adenine; uracil Uracil; thymine Guanine; uracil Cytosine; guanine Guanine; adenine    1      2      3      4      5     UnansweredQuestion 23 0 / 2 pts In eukaryotic cells, DNA is found in  Chromosomes Chromatin Mitochondria Answers a, b, and c are right Only answers a and b are correct    1      2      3      4      5     IncorrectQuestion 24 0 / 2 pts The synthetic process by which monomers are covalently linked is  Hydrolysis Isomerization Condensation Glycosidic linkage Ester linkage    1      2      3      4      5     IncorrectQuestion 25 0 / 2 pts Prokaryotic cells differ from eukaryotic cells in that the former lack Ribosomes A plasma membrane Endoplasmic reticulum A cell wall All of the above    1      2      3      4      5     IncorrectQuestion 26 0 / 2 pts Which of the following structures would not be found in prokaryotic cells? Cell wall Ribosomes Nuclear area Nucleus Propeller-like flagellum    1      2      3      4      5     Question 27 2 / 2 pts Structures used by some organisms for locomotion are  Cilia and nuclei Flagella and DNA Nuclei and membranes Cilia and sessiles Cilia and flagella    1      2      3      4      5     IncorrectQuestion 28 0 / 2 pts Which of the following is not true?  Biological membranes Are composed partly of amphipathic lipids Have hydrophobic and hydrophilic regions Are typically in a fluid state Are made mainly of lipids and of proteins that lie like thin sheets on the membrane surface Function in signal transduction    1      2      3      4      5     Question 29 2 / 2 pts Fatty acids are components of  Phospholipids and carotenoids Carotenoids and triacylglycerol Steroids and triacylglycerol Phospholipids and triacylglycerol Carotenoids and steroids    1      2      3      4      5     Question 30 2 / 2 pts Which of the following is a disaccharide? Glucose Fructose Sucrose Galactose Ribose    1      2      3      4      5     Question 31 2 / 2 pts Which of the following is not a function of the plasma membrane? Transports materials Helps to structurally link cells together Manufacturers proteins  Anchors the cell to the extracellular matrix Has receptors that relay signals    1      2      3      4      5     Question 32 2 / 2 pts Saturated fatty acids are so named because they are saturated with  Hydrogen Water Hydroxyl groups Glycerol Double bonds    1      2      3      4      5     IncorrectQuestion 33 0 / 2 pts The Golgi apparatus primarily functions in  Packaging protein for secretion Synthesizing protein for secretion Packaging protein for hydrolysis Both A and B Both A and C    1      2      3      4      5     IncorrectQuestion 34 0 / 2 pts Removal of a cell’s ribosomes would result in an inability to utilize which of the following molecules? Carbon dioxide Carbon monoxide Lysine Oxygen Phosphorus    1      2      3      4      5     IncorrectQuestion 35 0 / 2 pts All living organisms are classified as eukaryotes or prokaryotes.  An example of a prokaryote The AIDS virus E. coli Homo sapiens An oak tree An amoeba    1      2      3      4      5     Question 36 2 / 2 pts Which of the following levels of protein structure may be affected by hydrogen bonding Primary and secondary Primary and tertiary Secondary, tertiary and quaternary Primary, secondary, tertiary, and quaternary    1      2      3      4     Question 37 2 / 2 pts In signal transduction An extracellular signal is converted to an intracellular signal A signal is relayed through a series of molecules in the membrane Signal molecules are destroyed before target cells can respond to the signal  Answers a, b, and c are correct Only answers a and b are correct    1      2      3      4      5     IncorrectQuestion 38 0 / 2 pts The ability of a microscope to reveal fine detail is known as Magnification Resolving power Cell fractionation Scanning electron microscopy Phase contrast    1      2      3      4      5     Question 39 2 / 2 pts A biological catalyst that affects the rate of a chemical reaction without being consumed by the reaction is a(an) Product Cofactor  coenzyme  substrate  enzyme    1      2      3      4      5     Question 40 2 / 2 pts The region of an enzyme molecule that combines with the substrate is the Allosteric site  Reactant Active site Coenzyme product    1      2      3      4      5     Question 41 2 / 2 pts A reaction that requires a net input of free energy is described as Exergonic Endergonic Spontaneous Both a and c Both a and b    1      2      3      4      5     Question 42 2 / 2 pts The kinetic energy required to initiate a reaction is called Activation energy Bond energy Potential energy Free energy Heat energy    1      2      3      4      5     IncorrectQuestion 43 0 / 2 pts When a ligand binds the receptor Tight junctions develop A third messenger is activated Cell signaling is stopped  It activates the receptor A G protein is destroyed    1      2      3      4      5     IncorrectQuestion 44 0 / 2 pts According to the second law of thermodynamics Energy may be changed from one form to another but is neither created nor destroyed Much of the work an organism does is mechanical work The disorder of the universe is increasing  Free energy is available to do cell work A cell is in a state of dynamic equilibrium    1      2      3      4      5     Question 45 2 / 2 pts According to the first law of thermodynamics Energy may be changed from one from to another but is neither created nor destroyed  Much of the work an organism does is mechanical work The disorder of the universe is increasing  Free energy is available to do cell work A cell is in a state of dynamic equilibrium    1      2      3      4      5     Question 46 2 / 2 pts The process of splitting larger molecules into smaller ones is an aspect  of metabolism called Anabolism Fermentation Catabolism Oxidative phosphorylation Chemiosmosis    1      2      3      4      5     Question 47 2 / 2 pts Digestion reactions occur by means of Lipolysis Hydrolysis ?-oxidation Dehydration synthesis    1      2      3      4     Question 48 2 / 2 pts In a negative feedback loop, the effector organ produces changes that are In the same direction as the change produced by the initial stimulus. Opposite in direction to the change produced by the initial stimulus. Unrelated to the initial stimulus.    1      2      3     IncorrectQuestion 49 0 / 2 pts According to the fluid-mosaic model of the plasma membrane Protein and phospholipids form a regular, repeating structure. The membrane is a rigid structure. Phospholipids form a double layer, with the polar parts facing each other. Proteins are free to move within a double layer of phospholipids.    1      2      3      4     UnansweredQuestion 50 0 / 2 pts Which of these represents an endergonic reaction? ADP + Pi -->ATP ATP -->ADP + Pi Glucose + O2 --> CO2 + H2O CO2 + H2O --> glucose Both 1 and 4 Both 2 and 3