5. As compared to the human sperm cell, the human egg cell contains more... a) cytoplasm c) centrosomes b) mitochondria d) chromosomes

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1 BIOLOGY Quiz: Cell Reproduction. NAME : Multiple Choice. (1% each) 1. Which of the following is NOT true of mitotic cell division? a) It involves nuclear division. b) It involves division of the cytoplasm. c) It reduces the number of chromosomes per cell. d) It produces two identical cells. 2. Fertilization of a human egg establishes the... a) n chromosome number c) 3n chromosome number b) 2n chromosome number d) 4n chromosome number 3. Meiosis is a process of cell division which occurs in... a) a vegetative structure b) an embryonic plant tissue c) a rapidly dividing zygote d) a reproductive organ 4. If a mature sperm cell of Species A contains 6 chromosomes, each body cell of Species A will contain... a) 2 chromosomes c) 8 chromosomes b) 4 chromosomes d) 12 chromosomes 5. As compared to the human sperm cell, the human egg cell contains more... a) cytoplasm c) centrosomes b) mitochondria d) chromosomes 6. Spindle fibers attach to the chromosomes at the... a) nucleolus c) centromere b) centrioles d) centrosome 7. A structure found during plant cell division that is not found during animal cell division is a... a) centromere c) cell membrane b) cell plate d) spindle 8. During interphase of mitosis, the... a) chromosomes replicate b) nucleoli disappear c) homologous chromosomes form pairs d) both a and b 9. The correct sequence of stages for cell division is... a) prophase, anaphase, metaphase, telophase b) prophase, metaphase, anaphase, telophase c) interphase, prophase, metaphase, telophase d) interphase, metaphase, anaphase, telophase 10. The head of a sperm cell is of primary importance in the formation of a zygote because it provides... a) cytoplasm b) stored food c) the diploid number of chromosomes d) the monoploid number of chromosomes 11. In mitosis, chromosomes move to the poles of the spindle during...

2 a) interphase c) metaphase b) prophase d) anaphase 12. Why is it necessary to have the haploid (monoploid) number of chromosomes in gametes? a) to maintain proper species number b) to maintain correct cell number c) to make sure exchange has occurred d) none of the above 13. Mitosis differs from meiosis in that... a) mitosis only occurs in specialized organs and meiosis occurs in all organisms b) mitosis involves one cell division and meiosis involves two cell divisions c) centromeres split once in mitosis but twice in meiosis d) the cells produced by mitosis have one-half the number of chromosomes as the cells produced by meiosis 14. In the Watson and Crick model of a DNA molecule, the nitrogen base thymine will join with the nitrogen base... a) adenine c) uracil b) cytosine d) guanine 15. If the sequence of bases on one side of a DNA molecule is A T G C, what is the correct sequence for the other side? a) A T G C c) C G T A b) T A C G d) A C G T 16. The characteristics of all chromosomes in the cell including size and number is called its... a) phenotype c) stereotype b) karyotype d) genotype 17. The reshuffling of genetic information to lead to variety in offspring would be known as... a) genetic recombination c) genetic cloning b) genetic restoration d) genetic management 18. The correct combination of genes for determining if an individual would be a male is represented by... a) XXY c) XY b) XXX d) XX 19. Of what are the uprights of a DNA molecule composed? a) nitrogen bases only b) phosphates only c) sugar only d) both phosphates and sugar Use the diagram below to answer questions 20 to 24.

3 20. The phase of mitosis of this cell is... a) prophase c) metaphase b) anaphase d) telophase 21. Each daughter cell will contain... a) 2 single-stranded chromosomes b) 2 double-stranded chromosomes c) 4 single-stranded chromosomes d) 4 double-stranded chromosomes 22. In the phase shown, chromosomes are attached to the... a) aster c) spindle b) centromeres d) centrioles 23. During the next phase... a) replicated centromeres will separate b) nucleolus will reform c) one cell will become two d) spindle will disintegrate 24. Chromosomes will be replicated during the next... a) metaphase c) prophase b) telophase d) interphase For questions 25 to 29, in the space at the right, write the letter of the following term which correctly identifies the statement. A. interphase B. prophase C. metaphase D. anaphase E. telophase 25. Chromosomes reach opposite poles The spindle forms Chromosomes are replicated Chromatids line up at the equator Phase just before daughter cells are formed... MATCHINGS ITEMS. (1% EACH). 30. Produces gametes... A) mitosis only B) meiosis only 31. Produces diploid nuclei... C) both mitosis and meiosis D) neither mitosis nor meiosis 32. Produces eight nuclei Involves two cell divisions Replicates DNA Occurs only in sex organs... QUESTIONS. (ASSIGNED VALUES). 36. Draw a segment of a DNA molecule which contains FIVE pairs of nucleotides joined together. (5%)

4 37. Either : Draw a diagram to illustrate the process of spermatogenesis.(4%) Or : State FOUR reasons why meiosis is an important reproductive process. (4%) 38. Compare mitosis and meiosis with respect to... (8%) i) chromosome number ii) number of cell divisions iii) final chromosome number iv) purpose MITOSIS MEIOSIS i)

5 ii) iii) iv) 39. If isolated from your body, could one of your skin cells live independently? Explain your answer. (3%)