TMA2/BIO413

TMA Quiz Questions TMA: TMA2/BIO413 Matric Number: SCORE=8.00 BIO413 - DEVELOPMENTAL BIOLOGY Dr. Chukwu Maureen (mchukwu@noun.edu.ng ) 1 Which of the following methods of measuring microbial growth depends on the fact that microbial cells scatter light that strikes them? most probable number technique spectrophotometry viable counting methods determination of microbial dry weight 2 Which of the following statements best describe comparative embryology? the study of birth defects the study of detailed embryo formation the study of how changes in development may cause evolutionary changes the study of anatomy changes during the development of different organisms 3 Which of the following steps is not involved in the interaction of sperm and egg? activation of the egg metabolism to start development the passing of the sperm through the extracellular envelope the exocytosis of the acrosomal vesicle to release its enzymes  the chemoattraction of the sperm to the egg 4 Which of the following surround the early embryo and provide support for the cleavage – stage blastomeres? I. reproductive enzymes, II. mucopolysaccharides, III. hyalin, IV. Adhesive glycoproteins II only IV only II and III III and IV 5 Which of the following processes is not included in embryology? copulation gametogenesis organogenesis gastrulation 6 Which of the following is not a type of cleavage plane? equatorial latitudinal meridional bilateral 7 Which of the following is a feature of anapahase 1? Homologous pairs align in the centre of the cell Crossing over occurs between homologous chromosomes The chromosomes uncoil Homologous chromosomes separate 8 At which stage of meiotic division do homologous chromosomes become paired? Metaphase 1 Metaphase 2 Prophase 1 Prophase 2 9 Which of the following is not a feature of mitotic prophase? Chromosomes are not visible The nuclear membrane disintegrates Chromosomes are coiled Spindle fibres form 10 Which of the following best describe embryonic stem cells? Mammalian germ plasm not morphologically distinct during early development The germ line precursor cells Cells that are derived from the inner cell mass Cell that are derived from the cytoplasmic components 11 In which of the following organisms is the germ line not well established? Fishes Vertebrates Insects Round worms 12 Which of the following is not one of the phases of spermatogenesis? Spermatogenesis Spermatogenial multiplication Spermatogenial sequencing meiosis 13 The proliferation of migrating mouse premordial germ cells in culture is not increased by: Leukemia inhibition factor Stem cell factor Fibroblast growth factor Germ plasma factor 14 From which of the following cells do gametes arise? Remidial cells Premordial germ cells Granular cells Spermatocyte cells 15 Which of the following is /are the function (s) of meiosis? I .Reduce the number of chromosomes , II. Double the number of chromosomes, III. Production of granules I only II only I and II I and III 16 Which of the following organisms does not reproduce sexually? Plants Hydra Animals Insects 17 At which phase of the mitotic division does the chrormosomes have one chromatid? Metaphase Prophase G2 interphase G1 interphase 18 What is the chromosome constitution of the product of meiosis? Haploid Diploid Triploid tetraploid 19 How many times does each cell go through the division process during meiosis? Once twice thrice four times 20 Which of the following is a feature of mitotic telophase? Nucleus reforms Chromatids separate Chromosomes become aligned Nuclear membrane disintergrates