KEAN BIO 1000 - Answer Key Exam 3

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Ar,J s vv~~ ~ _J<;¥ YName _ Bio.1000 Exam 3 Suppleuwrtal Ins~on P[Ojram Dr. Osborne .3_._1. The diagrams below represent the sequence of events in a cell that is 1Dldergoing nonnal meiotic cell division. 2 2. I 3. __I4. (0) Which diagnm molt likely reprcICDfIllIF (0) oftbis sequence? < (1)(0 a)© (4)~(3) :,: .11. Each ofthe two daughter eeDs that result from the normal mitotic division ofthe original parent een contains (1) the same number of chromosomes, but has genes different . from those of the parent eeDs (2) the same number of chromosomes, and has genes identical to those ofthe parent eeDs (3) one half ofthe number ofchromosomes, but has ·genes different from those ofthe parent.eeDs (4) one halfofthe number ofchromosomes, and bas genes idenucal to those ofthe pmmt eeDs In the diagnu:na below, k rcprcacn18 the diploid numberofchromosomes in a eell of an oraanism. and D. represents the monoploid number. Which diagram rqH'CICi1ltB gamete fonnation? (l)®~ a)~ (3) @~ (4)~ The number ofautosomes and the type ofsexchromosomenonnaBy •present .in a human female liver een is (1) 44 + XX (2)'44 + XY (3)22+X (4)22+Y4-s. Mongolism (Down's syndrome) is caused by~.~, extra chromosome #'11 resulting from abnonnal ceQ division in (1) asiatic people .(2) black people (3) white people (4) any group because it is not confined to any one group Z 6. The fonowing list describes some of the events associated with nonnal cen division. . ----------- --------.-------A-Nuclearmembrane formation -at'O\md-each-set---------------------of newly fonned chromosomes B· Separation ofcentromeres c· Replication of each chromosome D· Movement of single-stranded chromosomes to opposite ends ofthe spindle What is the normal sequence in which these events occtrl (1) A .> B .>C.>D (2) C .>B.>D·>A ~C~D~B~A WD~C~A~B __17. The structure pictured at the right is most closely associated with which process? (1) mitosis (2) cyclosis (3) hydrolysis (4) phagocytosis 4-8. Which is 1he COITCCt sequence of steps in mitosis? (1) anaphase, metaphase, interphase, telophase, prophase (2) prophase, metaphase, telophase, intcIphase, anaphase (3) interphase, prophase, telophase, anaphase, metaphase (4) prophase, motaphaee, anaphaae, telophase, interphase4-9. Cancer can be considered as an abnonnlllity of Cf!ll division occurring in (1) asiatic people (2) black people (3) white people (4) any group because it is not confined to any one group I__10. Two cells which have a chromosome number different from that oftheir single parent ceD are nonnally produced during the process of (1) meiosis (2) mitosis -------------(3)fertilization-----------(4)cleavage-------------------------------------------------3 11. Which statement correctly describes the nonnal number and type of chromosomes present in human body cells of a particular sex? (1) Males have 22 pairs of autosomes, and one pair of sex chromosomes known as xx. (2) Females have 23 pairs ofautosomes. (3) Males have 22 pairs of autosomes, and one pair of sex chromosomes known 18.XY. (4) Males have 23 pairs of autosomes. 4-12. The inunediate resuh of the process of meiosis is the fonnation of (1) somatic ceDs ....Q1J~ eggs (3) gonads . (4rgametes :_ -._-'--_._--_,_13. The diploid number of chromosomes results from (1) fertilization (2) maturation (3) reduction division (4) ovulation 4-14. In marriages between black and white people, which is true of the children? (1) They have increuod risk of sicldo-cen anemia and C}'!tic fibrosis. (2) They have increased risk of sickle-ceD anemia but decreased risk ofgyatic fibrosis. . (3) They haw decreased risk of sickle-ceD anemia but increased riak ofcystic fibrOlis. (4) They have decreased risk of both sickle-eeD. anemia and cystic fibrosis. f 15. Agenetic disease ofthe exocrine glands fOWld primarily in white people is (1) cystic fibrosis (2) sickle-eeD anemia (3) Tay-Sachs disease (4) ulcerative colitisDirections (16-19): Base your answers to questions 16 through 19 on the followUig diagram of the human female reproductive system.. - --- . - _.- - - - _.._-._-_. __._.-.---_..... --UI~' 2 4 16. Which number indicates where the spenn cells enter? (1) 1 (2) 2 (3) 3 (4) 6 4-17. Which number indicates the site where a placenta is being formed? (1) 1 (2) 2 (3)3 (4)4 __I18. Which stnIcture is an ovary? (1) 1 (2) 2 (3) 6 (4) 7 2 19. Which number indicates a site of cleavage? (1) 1 (2) 6 (3)3 (4)5 4-20. Which of the foBowing diseases OCCW'B primarily in black people? (1) ulceratM coli1is (2) cystic fibrosis (3) Tay-Sachs disease (4) sickle-cell anemia 4-21. A hereditaty disease that may also provide protection against malaria is (1) ray-Sachs disease (2) cystic fibrosis (3) ulcerative colitis (4) sickle-cell anemia 2-22. Tay-8achs disease is inherited as a homozygous recessive trait (1) equally in an human groups (2) among Jews of eastern European descent (3) among people of A1iican descent (4) in people ofsoutheast Asia .'Directions (23-25): Base your lmSWcrs to questious 23 through 2~ orI. the dia&Tml below which represents selected steps occuning in hmnan reprodlmtion and on your knowledge m~~. -4 8,..__--A_-_\ ~ ~ 'V'-•.®-Q-Q9-~ -.-9-~ --------------------------------2------3--------------------S-------------6 7 I 23. Which number indicates the process offertilization? (1) 1 (2) 7 (3) 8 (4) 4 1'-4-24. Which number indicates the process:ofeady cleavage? (1) 1 (2) 5 -(3) 8 (4) 4 I 25. Which nmnber indicates the structure known as the blastula? (1)6 (2)2 (3)3 (4)7 Tall stems in plants, red tlower color and gIWIl pod color in peas an partly describe each 0IpDisma (1) alleles (2) autosomes (3) chromosomes (4) phenotypes __,_ 27. Skin color in humans rcsubs from a zene1ic inheritance pattern caned (1) polygenic (2) homozygous (3) heterozygous (4) codomiDant 3 28. A cross between a red rose and a white rose resuICB in 100% pink. When two ofthese pink roses are crossed, assuming large numbers ofoffspring, the ra1io of oftipriDg produced most probably will be (l) lOOOIb pink (2) 75% pink; 25% red (3) 25% red; 50% pink; 25% white (4) 50% red; 50% white3 29. 2 31. .4 32. 4-33. f 34. 2- 35. 4 36. Which molecule carries a specific code from the nucleus to the site of protein synthesis? (l)DNA (2) messenger RNA (3) transfer RNA (4) ribosomal RNA Which base is found in DNA but not in RNA? (1) adenine (2) guanine (3) cytosine .. (4) thymine Which molecule is fmmd in the structure ofnbosomes?


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KEAN BIO 1000 - Answer Key Exam 3

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