Test Your Basic Biology Now

26 Questions | Total Attempts: 26

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Test Your Basic Biology Now

Ever wondered how much you can recall from your Biology classes? Take our online quiz to test your basic biology now and enhance your knowledge with every question you attempt.


Questions and Answers
  • 1. 
    Which of the following defines a genome ?
    • A. 

      Representation of a complete set of a cell's polypeptides

    • B. 

      The coplete set of an organism's polypeptides

    • C. 

      A karyotype 

    • D. 

      The complete set of an organism's genes 

  • 2. 
    The human genom is minimally contained in which of the following ? 
    • A. 

      Every human cell

    • B. 

      Each human chromosome

    • C. 

      Each human gene 

    • D. 

      The entire DNA of a single human 

  • 3. 
    Which of the following is true statment about sexual vs. asexual reproduction ? 
    • A. 

      Asexual reproduction, but not sexual reproduction, is characteristic of plants and fungi

    • B. 

      In sexual reproduction, individuals transmit 50°% of their genes to each of their offspring.

    • C. 

      In asexual reproduction, offspring are produced by fertilization without meiosis

    • D. 

      Sexual reproduction requires that parents be diploid.

    • E. 

      Asexual reproduction produces only haploid offspring.

  • 4. 
    At which stage of mitosis are chromosomes usually photographed in the preparation of a karyotype?
    • A. 

      Prophase 

    • B. 

      Metaphase 

    • C. 

      Anaphase

    • D. 

      Telophase 

    • E. 

      Interphase 

  • 5. 
    The karyotype is : 
    • A. 

      A Picture that display the individual chromosomes at metaphase 

    • B. 

      Genotype of the individual

    • C. 

      Blood type of individual 

    • D. 

      Unique combination of chromosomes found in gametes

  • 6. 
    The human X and Y chromosomes
    • A. 

      Are both present in everV somatic cell of males and females alike

    • B. 

      Are of approXimately equal SIze and number of genes

    • C. 

      Are almost entirely homologous, despite theirdifferent names

    • D. 

      Include genes that determine an individual's sex

    • E. 

      Option 5

  • 7. 
    The cell that produced from fusion of sperm and egg is called : 
    • A. 

      Zygote 

    • B. 

      Gamete 

    • C. 

      Haploid cell

    • D. 

      Multicellular habliod cell 

  • 8. 
    The fusion of sperm and egg is called : 
    • A. 

      Combination 

    • B. 

      Fertilization 

    • C. 

      Crossing over 

    • D. 

      None 

  • 9. 
    Which of the following is true of a species that has a chromosome number of 2n = 16? 
    • A. 

      The species is diploid with 32 chromosomes per cell.

    • B. 

      The species has 16 sets of chromosomes per cell

    • C. 

      Each cell has eight homologous pairs.

    • D. 

      During the S phase of the cell cycle there will be 32 separate chromosomes 

    • E. 

      A gamete from this species has four chromosomes.

  • 10. 
    The crossing over process occurs between _____ in _____
    • A. 

      Non-sister chromatids - prophase I 

    • B. 

      Non-sister chromatids - prophase II 

    • C. 

      Sister chromatids - prophase I 

    • D. 

      Prophase I Sister chromatids- prophase II 

  • 11. 
    Which of the following mechanisms contribute to the genetic variation?
    • A. 

      Independent assortment of chromosomes

    • B. 

      Crossing over 

    • C. 

      Random fertilization 

    • D. 

      All of the above 

  • 12. 
    Eukaryotic sexual life cycles show tremendous variation. Of the following elements, which do all sexua cycles have in common?1. Alternation of generations  2. Meiosis     3.Fertilization  4.Gametes  5. Spores
    • A. 

      1,4,5

    • B. 

      1,2,4

    • C. 

      2,3,4

    • D. 

      2,4,5

    • E. 

      1,2,3 4,5

  • 13. 
    Tetrad forms in : 
    • A. 

      Prophase |

    • B. 

      Prophase ||

    • C. 

      Metaphase |

    • D. 

      Metaphase ||

  • 14. 
    The Y-chromosome is : 
    • A. 

      Male gamete 

    • B. 

      Female gamete

    • C. 

      Zygote 

    • D. 

      Somatic cell 

  • 15. 
    The homologous chromosomes are : 
    • A. 

       Have the genes controlling the same inherited characters

    • B. 

      Have the genes controlling different inherited characters 

    • C. 

      Found in gametes 

    • D. 

      All of the above 

  • 16. 
    The two sister chromateds are called :
    • A. 

      Duplicated chromosome

    • B. 

      Homologous

    • C. 

      Unduplicated chromosome

    • D. 

      None of these above 

  • 17. 
    Seperation of centromere in ___ of mitosis and in ____ of meiosis occurs in : 
    • A. 

      Anaphase -- Anaphase ||

    • B. 

      Anaphase --Anaphase| 

    • C. 

      Anaphase ||--Anaphase 

    • D. 

      Anaphase|-- Anaphase 

  • 18. 
    Which of the following happens at the conclusion of meiosis I? 
    • A. 

      Homologous chromosomes are separated

    • B. 

      The chromosome number per cell is conserved.

    • C. 

      Sister chromatids are separated

    • D. 

      Four daughter cells are formed.

    • E. 

      The sperm cells elongate to form a head and a tail end

  • 19. 
    A cell divides to produce two daughter cells that are genetically different
    • A. 

      The statement is true for mitosis only

    • B. 

      The statement is true for meiosis | only.

    • C. 

      The statement is true for meiosis II only

    • D. 

      The statement is true for mitosis and meiosis

  • 20. 
    When we see chiasmata under a microscope, that lets us know which of the  following occur 
    • A. 

      Asexual reproduction 

    • B. 

      Meiosis ||

    • C. 

      Anaphase ||

    • D. 

      Prophase |

    • E. 

      Seperation of homologes 

  • 21. 
    For a species with a haploid number of 23 chromosomes, how many different combinations of maternal and paternal chromosomes are possible for the gametes?
    • A. 

      230

    • B. 

      1460

    • C. 

      480

    • D. 

      8 million 

    • E. 

      4920

  • 22. 
    Independent assortment of chromosomes is a result of
    • A. 

      The random and independent way in which each pair of homologous chromosomes lines up at the metaphase plate during meiosis |

    • B. 

      The random nature of the fertilization of ova by sperm

    • C. 

      The random distribution of the sister chromatids to the two daughter cells during anaphase ||

    • D. 

      The relatively small degree of homology shared by the X and Y chromosomes. 

    • E. 

      The random and independent way in which each pair of homologous chromosomes lines up at the metaphase plate during meiosis I, the random nature of the fertilization of ova by sperm, the random distribution of the sister chromatids to the two daughter cells during anaphase II, and the relatively small degree of homology shared by the X and Y chromosomes

  • 23. 
    A human cell containing 22 autosomes and aY chromosomes is : 
    • A. 

      50 per chromosome pair 

    • B. 

      2 per mitotic cell 

    • C. 

      1-2 per chromosome pair, at least 

    • D. 

      A very rare event among handred of cells 

  • 24. 
     If the DNA content of a diploid cell in the G1 phase of the cell cycle is x, then the DNA content of the same cell at metaphase of meiosis I would be
    • A. 

      0.25x

    • B. 

      0.5x 

    • C. 

      X

    • D. 

      2x

  • 25. 
    If the DNA content of a diploid cell in the Gl phase of the cell cycle is x, then the DNA content of a single cell at metaphase of meiosis II would be
    • A. 

      0.25x

    • B. 

      0.5x

    • C. 

      X

    • D. 

      2x

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