B150Mf01t2f0 - M .CO 411 Biology 150 Fall 2001 - Test 2 -...

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Unformatted text preview: M .CO 411 Biology 150 Fall 2001 - Test 2 - PR E MED FORM O P 1.C OM Directions: Choose the BEST answer from among the choice given) 30 October 2001 Mallery – Sect PT OM - PR EME D41 01) A ribosome would be found in which of the following places within cells? a) in a polyribosome (polysome) b) in the cytoplasm of a eukaryotic cell c) attached to the E.R. membranes d) in the cytoplasm of a bacterial cell e) choose this answer if all of these may be correct a) true b) false D41 1.C 02) The size of a ribosome has almost the same dimensions as a lysosome? OM - PR EME 03) The type of endoplasmic reticulum that is responsible for lipid & bile synthesis and drug detoxification is? a) smooth E.R. b) rough E.R. c) cis-trans E.R. d) phagasomic E.R. e) none of these is correct - PR EME D41 1.C OM - PR EME D41 1.C 04) The figure to the right represents which of the following organelles? a) Golgi body b) rough endoplasmic reticulum c) smooth endoplasmic reticulum d) plasmodesma e) none of these is correct - PR EME D41 1.C OM 05) In the figure to the right what is label “A”? a) a cis-face b) a trans-face c) a ribosome d) a desmosome e) none of these is a correct choice c) cisternae or lumen d) cytoplasm e) none of these + 1.C OM 06) In this same figure what is the area identified by “B”? a) peri-mitochondrial space b) thylakoid lumen - PR EME D41 07) Lysosomal membranes contain H ion pumps making the pH of the interior of this organelle have a(n) __ pH optima? a) basic b) acid c) neutral d) none of these is a correct choice e) none of these is correct D41 1.C OM 08) E.R. transport vesicles enter the Golgi for modification on the Golgi’s? a) medial face b) cis-face c) trans face d) plasmodesmata OM - PR EME 09) The self-digestion of the organelles of a cell, often referred to as intracellular digestion, is also known as? a) pinocytosis b) phagocytosis c) autophagy d) endocytosis e) none of these is correct - PR EME D41 1.C 10) Which of the following cytoskeletal proteins is used to make the microfilament elements of the cytoskeleton? a) a-tubulin b) ß-tubulin c) collagen d) actin e) none of these is correct - PR EME D4 11. COM 11) Which of the following pairs of organelles have exactly the same or identical structure? a) a flagella & a microfilament b) microtubule & a microfilament c) centriole and a basal body d) centriole & a tight junction e) none of these is a correct choice 12) The inter-cellular junction that functions as an adhering junction holding two cells together is? a) a tight junction b) a desmosome c) a gap junction d) a phagosome e) none of these - PR EME D4 11. COM 13) The rate of movement of most chemical solutes across cell membranes is directly proportional to that solute’s? a) size b) shape c) partition coefficient d) solubility in water e) none of these is correct COM 14) If a solution is hypertonic to the cytoplasm of a cell, then it is likely that this cell will? a) swell b) shrink c) neither shrink nor swell d) divide by meiosis e) none of these is correct PRE MED 411 .CO M PRE M ED4 11. 15) If the calculated Nernst electrical potential is 27mv inside negative for Na ions in a kidney epithelial cell and if we measure the actual cell potential by inserting an electrode into this kidney cell and determine the actual potential to be 26.5mv inside negative, then me may conclude that Na ions distribute themselves across kidney cell membranes? a) actively b) passively c) by an active carrier protein like NaK -ATPase d) none of these is correct M .CO 411 Bil 150 Fall 2001 – Mallery – Test 2 – form 0 - page 2 - PR E MED Refer to figure to right for next few questions: 1.C OM - PR EME D41 1.C OM 16) What is (are) the cell parts identified by label “B”? a) collagen fibers b) cholesterol c) cytoskeletal protein fibers d) an integral (intrinsic) protein e) none of these - PR EME D41 1.C OM - PR EME D41 17) The item labeled “E” is a(n)? a) peripheral (extrinsic) protein b) integral (intrinsic) protein c) microtubular protein d) glycoprotein e) none of these d) bacterial cells e) none of these D41 1.C OM 18) Microtubules and microfilaments are absent in which of the following cells? a) eukaryotic egg cells b) human kidney cells c) all animal cells - PR EME 19) In the figure to the left, which letter best depicts “facilitated diffusion”? a) A b) B c) C d) both A & B depict facilitated diffusion e) none of these - PR EME D41 1.C OM 20) In the figure to the left, which letter best depicts “active” transport? a) A b) B c) C d) both A & B depict facilitated diffusion e) none of these are targeted to specific receptors and often includes growth factor proteins? a) true b) false D41 1.C OM 21) Paracrine cell signaling involves local regulator chemical messengers which OM - PR EME 22) The binding of which of the following molecules induces inactive tyrosine-kinase regulator proteins to become active kinases? a) GDP b) GTP c) PO4 d) acetylcholine e) none of these is correct - PR EME D41 1.C 23) A signal molecule (the hormone epinepherine) leads to activation of a membrane bound inactive enzyme adenyl cyclase. Active adenyl cyclase produces which of the following secondary messenger molecules? a) GTP b) ATP c) AMP d) cyclic-AMP e) none of these is correct - PR EME D41 1.C OM 24) Cholera toxin is made by the bacteria, Vibrio cholerae, which grow in fecal infected waters and produce the toxin that binds to a G-protein, preventing the conversion of GTP --> GDP, thus the G-protein remains active, causing cAMP to remain active with a net result of perfuse diarrhea, which is often fatal. a) true b) false 11. COM 25) Most of a cells conversion of food molecules into useful cellular energy is used for? a) homeostasis b) muscle contraction c) maintaining equilibrium d) none of these is correct COM - PR EME D4 26) A cellular reaction that results in an increase in the entropy of the products is a(n) or has a(n)? a) endergonic reaction b) non-spontaneous reaction c) + free energy change d) exergonic reaction e) choose this answer if none of these is correct COM - PR EME D4 11. 27) If the ∆G for ATP ---> ADP + P is -7.3 Kc/mole and the ∆G for the conversion of glucose + fructose ---> sucrose is + 5.5Kc/mole, then the overall ∆G for the conversion of glucose + ATP + fructose to sucrose is ? a) +12.8 Kc/mole b) –1.8 Kc/mole c) +1.8Kc/mole d) –12.8 Kc/mole e) none of these M PRE M ED4 11. 28) A bacteria consumes 5 glucose molecules via glycolysis: the total number of net ATP that it could make would be? a) 5 b) 10 c) 20 d) 180 e) none of these is correct PRE MED 411 .CO 29) Which of the following cellular respiration coenzyme molecules have ADP as a part of their structural makeup? a) NAD+ b) FADH c) CoASH d) choose this answer if all of these molecules possess ADP M .CO 411 Bil 150 Fall 2001 – Mallery – Test 2 – form 0 - page 3 OM - PR EME D41 1.C OM - PR E MED 30) In the following reaction (as drawn) the hydrogen donor molecule is? a) PYR b) NADH c) NAD+ d) LAC e) none of these is the hydrogen donor OM - PR EME D41 1.C 31) Which of the following reactions is responsible for moving the electrons and/or hydrogen atoms from the glycolytic pathway reactions into the mitochondria to be used by the mitochondrial electron transfer chain? a) alcohol fermentation b) lactic acid fermentation c) pyruvate dehydrogenase d) malate shuttle e) choose this answer if none of the above is correct D41 1.C OM - PR EME D41 1.C OM - PR EME D41 1.C OM - PR EME D41 1.C The next several questions refer to the following two figures: c) where the “X” is d) in B of fig.1 e) none of these is correct OM - PR EME 32) Where does glycolysis occur? a) in G of fig. 2 b) in D of fig.1 a) true b) false D41 1.C 33) Substrate level phosphorylation occurs where the “X” of fig. 1 is and where the D of fig. 1 is? b) in area “A” (between C & D) of fig. 2 c) in area “F” in fig. 2 e) all of these choices are correct 1.C OM - PR EME 34) Hydrogen ions accumulate? a) in area of B in fig.1 d) choices a & c are correct c) during the Krebs Cycle COM - PR EME D41 35) Where does decarboxylation take place? a) during alcohol fermentation b) during the pyruvate dehydrogenase reaction d) choose this answer if all of the above are correct - PR EME D4 11. 36) The terminal electron acceptor (last molecule to accept electrons) in the mitochondrial electron transfer chain is? + a) NADP b) water c) oxygen d) ATP e) none of these is correct - PR EME D4 11. COM 37) Cellular respiration is regulated by concentration controls of molecules, such as ADP & ATP, as well, as allosteric regulation of the key glycolytic enzyme phosphofructokinase? a) true b) false COM 38) Plants reflect what “color(s)” of the visible spectrum of light? a) red b) blue c) red and blue d) green e) none of these is correct PRE MED 411 .CO M PRE M ED4 11. 39) When chlorophyll molecules re-radiate absorbed light, which then appears near-red in color the process is known as? a) resonance b) fluorescence c) photoionization d) photorespiration e) none of these is correct M .CO 411 Bil 150 Fall 2001 – Mallery – Test 2 – form 0 - page 4 OM - PR E MED 40) Which enzyme(s) of carbon dioxide reduction are found in C-4 (Hatch & Slack) photosynthetic plants? a) RuBP-carboxylase (Rubisco) b) PEP-carboxylase c) both a & b d) neither of these enzymes - PR EME D41 1.C 41) You would expect to find the highest concentration of the kinase protein MPF (that promotes cell division) during which of the following stages of the cell cycle? a) G1 b) S c) M d) G0 e) none of these is correct - PR EME D41 1.C OM 42) During meiosis 1, the cell separates the homologs of a homologous pair, while during mitosis the chromatids of a homolog are separated? a) true b) false c) prophase of meiosis 2 d) anaphase of mitosis D41 1.C OM 43) Chromosomal synapsis and crossing over occur during? a) mitotic prophase b) prophase of meiosis 1 e) choose this answer if none of the above is correct - PR EME 44) A gene for a specific morphological trait in a species may have only two different alleles? a) true a) true b) false 1.C OM 45) A couple that has blood types A and B are incapable of having any children with blood type “O”. b) false 1.C OM - PR EME D41 46) A human recessive genetic disease, phenylketonuria (PKU), is found on chromosome 12. Suppose a boy, John, who has PKU marries a normal woman, but whose father also had PKU. If this couple has any children, what is the probability that their children will be normal. a) 100% b) 75% c) 50% d) 1 out of 4 (or 25%) e) none of these is correct D41 1.C OM - PR EME D41 47) What is the correct linear sequence for the following genes based upon the map data given? gene E is 5 map units from N gene N is 7 map units from A gene A is 4 map units from C gene E is 16 map units from C gene N is 11 map units from C gene E is 12 map units from A a) E-N-C-A b) C-A-E -N c) E-N-A-C d) C-N-A -E e) none of these is correct - PR EME 48) Trisomy is the abnormal chromosome circumstance where there is one less than the normal diploid number of chromosomes in an individual. a) true b) false - PR EME D41 1.C OM 49) In Ibises orange feathers (G) are dominant to green feathers (g). An orange feathered Ibis named Sebastian mates with a green feathered Ibis. Over their entire reproductive life spans all their chicks are orange feathered. We may conclusively state Sebastian’s genotype is homozygous dominant. a) true b) false COM - PR EME D41 1.C OM 50) Lou Gherig’s disease (amyotropic lateral sclerosis - ALS), a commonly recessive gene inherited muscle disease, shows an incidence of 1 out of 624 people in the U.S. How many carriers are there is U.S. population for ALS? a) around 0.16% b) near 8% c) near 96% d) about 4% e) none of these is correct PRE MED 411 .CO M PRE M ED4 11. COM - PR EME D4 11. COM - PR EME D4 11. Answer key below PRE MED 411 .CO M PRE M ED4 11. COM - PR EME D4 11. COM - PR EME D4 11. COM - PR EME D41 1.C OM - PR EME D41 1.C OM - PR EME D41 1.C OM - PR EME D41 1.C OM - PR EME D41 1.C OM - PR EME D41 1.C OM - PR EME D41 1.C OM - PR EME D41 1.C OM - PR E MED 411 .CO Bil 150 Fall 2001 – Mallery – Test 2 – form 0 - page 5 M ...
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This note was uploaded on 02/10/2012 for the course BIL 150 taught by Professor Gaines during the Fall '07 term at University of Miami.

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