B150Mf00t2f1

B150Mf00t2f1 - M .CO - PR E Test 2 October 31, 2000 Choose...

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Unformatted text preview: M .CO - PR E Test 2 October 31, 2000 Choose the BEST answer from among those given. D41 1.C OM DIRECTIONS: P 411 Form 1 MED Bil 150 Section PT Dr. Mallery D41 1.C OM - PR EME 1. A photographic representation of a species chromosomes during some stage of cell division is? a) a Punnett square b) a karyotype c) amniocentesis d) autosomal linkage e) choose this answer if none of these is a correct choice D41 1.C OM - PR EME 2. Kleinfelter syndrome is due to ? a) an inborn error of metabolism b) a homozygous recessive condit ion c) incomplete dominance d) chromosomal non-disjunction during meiosis e) none of these is a correct choice - PR EME D41 1.C OM - PR EME 3. A linked gene test cross provides the following data: What is the proper order of these gene on this chromosome? Gene “A” is 5 centi- morgans from gene “P”, and gene “A” is 7 map units from “M”, and gene “P” is 12 centi- morgans from “M”. a) A-M-P b) A-P-M c) P-A-M d) M-P-A e) none of these is a correct - PR EME D41 1.C OM 4. Hemophilia is a sex-linked recessive. John is a hemophiliac whose daughter, Mary, is NOT a hemophiliac. We may definitely conclude from this evidence that? a) Mary’s biological mother is also a hemophiliac b) Mary’s biological mother is normal c) John is not the biological father of Mary d) Mary’s mother must have been a hemophiliac e) none of these is a correct choice D41 1.C OM - PR EME D41 1.C OM 5. In “Canes”, orange fur (O) is dominant to green (o) fur, and long (L) antennae is dominant to short antennae. An orange furred- long antennaed Cane is mated to a green furred-short antennaed Cane. The only progeny that this couple of Canes can have is orange- furred- long antennaed and green-furred- long antennaed. The genotypes of the parent Canes is most likely? a) OOLL x ooll b) OoLL x ooll c) Ooll x ooLL d) OoLl x OoLl e) none of these COM - PR EME D41 1.C OM - PR EME 6. To determine whether or not two genes may be linked on a single chromosome, one would do what? a) a testcross of an F1 heterozygote b) a cross of a homozygous recessive to itself c) a cross of a homozygous dominant to a homozygous recessive d) a cross of a heterozygote to itself e) none of these is correct - PR EME D4 11. COM - PR EME D4 11. 7. In the question above, from the results of the proper cross to establish that the two genes are actually linked that you would expect is which of the following? a) only 2 progeny types in a 1:1 ratio b) only one progeny type c) 4 progeny types in the ratio of 9:3:3:1 d) only 2 progeny types in the ration of 1:1:1:1 e) choose this answer if none of the above is a correct choice M PRE M ED4 11. COM 8. A father is identified to have PKU (phenylketonuria). If any of his children are to inherit his disease, then their mother must be which of the following? a) homozygous dominant b) a carrier of the trait c) a trisomic d) a triple XXX syndrome e) choose this answer if none of the above is correct PRE MED 411 .CO 9. The circumstance where a single gene defect results in multiple phenotypic anomalies is ? a) incomplete dominance b) polygenic inheritance c) pleiotropic inheritance d) epistasis e) none of these is a correct choice M .CO - PR E MED 411 Bil 150 Fall 2000 – Test 3 – Form 1 – page 2 - PR EME D41 1.C OM 10. One way to get the electrons from the cytosolic NADH made in glycolysis into the mitochondria for passage into the mitochondrial electron transfer chain is by passing through them? a) the ATP synthase b) membrane shuttles as the malate shuttle c) decarboxylation d) oxidative phosphorylation e) choose this answer if none of the above is correct - PR EME D41 1.C OM 11. In a typical dihybrid cross of true breeding homozygous parents, the number of progeny in the F2 generation that do NOT look either of the true breeding parents is? a) 16 b) 9 c) 1 d) 6 e) choose this answer if none of the above is correct d) anaphase II e) none of these - PR EME D41 1.C OM 12. The meiotic stage where a chiasma may form is? a) prophase I b) telophase I c) cytokenesis D41 1.C OM 13. The intimate pairing of homologous chromosomes during meiosis is ? a) fertilization b) interphase c) synapsis d) zygote e) none of these are correct D41 1.C OM - PR EME 14. The flattened membrane sacs found in the interior of the chloroplast, where the light reactions of photosynthesis occur, is referred to as? a) stroma b) chloroplasm c) thylakoids d) cristae membranes e) none of these D41 1.C OM - PR EME 15. The path of electron flow during the light reactions of photosynthesis, which produces only ATP and no NADPH, is referred to as? a) non-cyclic electron flow b) cyclic electron flow c) photorespiration d) chemiosmosis e) choose this answer if none of the above is correct 1.C OM - PR EME 16. Which of the following enzymes is absolutely necessary for CAM plants dark reactions? a) RuBP carboxylase b) PEP carboxylase c) ATP synthase d) loculase e) none of these d) fluorescence 1.C OM - PR EME D41 17. The process of inhibition of the Calvin cycle by oxygen is referred to as? a) photophosphorylation b) photorespiration c) phosphorescence e) choose this answer if none of the above is correct. - PR EME D41 18. The photosystem responsible for the photolysis (splitting) of water is? a) photosystem I b) photosystem II c) thylakoid d) grana stack e) none of these - PR EME D4 11. COM 19. The difference between the CAM pathway and the C4 (Hatch-Slack) pathway is that the C4 pathways separates acid production from eventual CO2 fixation by isolating the two processes into separate cells while CAM plants separate the processes in time. a) true b) false - PR EME D4 11. COM 20. The key enzyme in the regulation of glycolysis, phospho- fructo-kinase, is controlled by? a) allosteric modulation b) feedback inhibition c) concentration dependent controls d) choose this answer if all of the above are mechanisms for controlling this enzyme d) mitoplasm M PRE M ED4 11. COM 21. Substrate level phosphorylation occurs? a) glycolysis b) Krebs cycle c) in the cytoplasm e) choose this answer if all of the above is a correct choice PRE MED 411 .CO 22. Which of the following is a product of the Krebs Cycle? a) oxaloacetic acid b) NADH c) CO2 d) FADH2 e) choose this answer if all of these are products of the Krebs cycle reactions M .CO MED 411 Bil 150 Fall 2000 – Test 3 – Form 1 – page 3 1.C OM - PR E 23. The Na-pump (NaK-ATPase) pumps ____ out of a cell and ___ into a cell? a) K – Na b) Na – K c) Na – Cl d) K – Cl e) none of these is correct 1.C OM - PR EME D41 24. CO2 is released during which of the following metabolic reactions? a) alcoholic fermentation b) Krebs cycle c) pyruvate dehydrogenase complex d) choose this answer if all of these is correct 1.C OM - PR EME D41 25. Which of the following reactions does NOT occur during heterotrophic energy metabolism? a) oxidation b) reductions c) decarboxylation d) phosphorylation e) choose this answer if all of the above do occur - PR EME D41 26. The intracellular site of the electron transfer chain is? a) cytoplasm b) locule space c) cristae membranes a) true e) none of these b) false D41 1.C OM 27. The entropy of the Universe can only increase? d) mitoplasm - PR EME D41 1.C OM - PR EME 28. At equilibrium the net free energy is zero and the concentration of products over the concentration of the reactants of a reaction is referred to as? a) actual free energy b) the enthalpy c) equilibrium constant (Keq) d) Ea (energy of activation) e) choose this answer if none of the above is correct D41 1.C OM - PR EME D41 1.C OM 29. The free energy changes for the following reaction are: glucose + fructose à sucrose ÄG0’ + 5.5Kc/mole ATP à ADP + P ÄG0’ - 7.3 Kc/mole What is the overall free energy change for the reaction given below? glucose + ATP à glucose-1-phosphate + fructose à sucrose + P a) +12.8 Kc/mole b) - 12.8 Kc/mole c) –1.8 Kc/mole d) +1.8Kc/mole e) choose this answer if none of the above is correct 1.C OM - PR EME 30. Metabolism most often functions by coupling thermodynamically unfavorable reactions with thermodynamically favored reactions. a) true b) false COM - PR EME D41 31. Which of the following changes of free energy is characteristic for an endergonic reaction? a) -3.0 Kc/mole b) +3.0 Kc/mole c) only where ATP hydrolysis is required d) none of these is a correct choice - PR EME D4 11. 32. A receptor protein that is loosely associated with a plasma cell membrane is classed as a(n)? a) intrinsic protein b) integral protein c) peripheral protein d) none of these - PR EME D4 11. COM 33. The Nernst Equation is used to mathematically define ? a) active transport b) passive diffusion of ions c) cotransport d) antiport a) true b) false COM 34. Symport is the simultaneous transport of 2 solutes in opposite directions. e) none of these M PRE M ED4 11. 35. Carrier mediated transport means that the solute in question is moving across a membrane through? a) phospholipids b) cholesterol c) a membrane protein d) microfilaments e) choose this answer if none of these is correct PRE MED 411 .CO 36. Which of the following organelles contains acid hydrolytic enzymes? a) microtubule b) basal body c) medial Golgi d) lysosomes e) none of these M .CO - PR E MED 411 Bil 150 Fall 2000 – Test 3 – Form 1 – page 4 b) false 1.C OM 37. Genes carried on different chromosomes sort independently of each other? a) true 1.C OM - PR EME D41 38. The uptake of extracellular liquid by a cell’s plasma membrane engulfing the liquid is referred to as? a) phagocytosis b) exocytosis c) receptor mediated exocytosis d) pinocytosis e) choose this answer if none of the above is correct d) active transport 1.C OM - PR EME D41 39. The unidirectional transport of a charged ion is referred to as? a) symport b) electrogenic transport c) cotransport e) choose this answer if none of the above is correct D41 1.C OM - PR EME D41 40. According to the Endosymbiont Hypothesis? a) mitochondria are derived from chloroplasts b) chloroplasts are derived from mitochondria c) mitochondria & chloroplasts are derived from prokaryotes d) Golgi come from prokaryotes e) Choose this answer if none of the above is correct. D41 1.C OM - PR EME 41. Endoplasmic reticulum transport vesicles enter the Golgi via? a) median Golgi elements b) cis Golgi elements c) trans Golgi elements e) lysosomal elements e) choose this answer if none of these is correct 1.C OM - PR EME 42. The ribosome and its subunits may be found? a) in a polysome b) attached to endoplasmic reticular membranes c) free in the cytoplasm e) inside mitochondria and chloroplasts e) choose this answer if all of the above are true OM - PR EME D41 43. A basal body has the same general structural anatomy as which of the following? a) centriole b) flagella c) microtubule d) desmosome e) none of these e) none of these - PR EME D41 1.C 44. The cytoplasmic- membrane intercellular junction found between plant cells is? a) microfilament b) desmosome c) plasmodesmata d) vacuolar junction D41 1.C OM 45. The intracellular junction that impermeabilizes two epithelial cells is referred to as? a) tight junction b) basal body c) desmosome d) gap junction e) none of these COM - PR EME 46. Cholesterol molecules are found embedded within in the integral proteins of a cell’s membrane? a) true b) false - PR EME D4 11. 47. The site of intracellular protein synthesis is the? a) gap junction b) tight junction c) ribosome d) medial Golgi e) none of these - PR EME D4 11. COM 48. Lipid and bile synthesis is done by the ? a) rough endoplasmic reticulum b) smooth endoplasmic reticulum c) trans Golgi d) endosomes e) choose this answer if none of these is correct ED4 11. COM 49. Spindle fibers are made of? a) plasmodesmata b) microfilaments c) actin filaments d) microtubules e) none of these PRE MED 411 .CO M PRE M 50. The Chromosomal Theory of Inheritance is credited mostly to? a) Mendel b) Thomas Hunt Morgan c) Walter Sutton & Theodore Boveri d) Garrod e) none of these is correct ...
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