Mitosis++Meiosis+Quiz+Review

=Mitosis Meiosis=

Multiple choice
• Know vocab like centromere, chromatid, chromatin, zygote, gamete, spindle fiber, homologue(homologous), centrioles, etc. • Diploid vs haploid rememebr that diploid is the normal# (Example: diploid number 30; Haploid = 15) • nondisjunction and what does it cause (failure of chromosomes to divide – causes trisomy; example = Downs syndrome- extra chromosome #21) • polar cells are formed when? (Oogenesis (making eggs – extra DNA because egg takes almost all cytoplasm)) • What occurs in interphase – (normal cell activities, protein synthesis) • When mitosis occurs & result? When meiosis occurs & result? ( Mitosis = diploid cells (body cells), repair damaged tissue, grow; Meiosis = haploid cells (gametes), make sperm & egg) • Both mitosis & meiosis replicate DNA (chromosomes) when? (At end of interphase) • What can you tell by looking at a karyotype? (Can tell if trisomy or monosomy (too many or too few chromosomes))

True/ False
• Definition of zygote, gamete (zygote – fertilized cell, gamete – sex cell) • Human diploid # is? haploid# is? (Diploid = 46; Haploid = 23) • How spermatogenesis & oogenesis differ (End result of 4 same size cells in spermatogenesis; end result of 1 large cell in oogenesis and 3 polar bodies) • Definition of Apoptosis & telomere (Programmed cell death when telomeres get too short, End of chromosomes that protect from destruction) • Difference between a furrow and a cell plate (furrow is division for animal cells, cell plate is for plant cells) • Downs syndrome results from? (nondisjunction of 21st chromosome)

Short answer
• Know what happens in the different phases of both mitosis and meiosis –(Be able to check mitosis, meiosis or Neither. (Knowing the phases is bonus); be careful of the Roman numerals; here’s a review: http://highered.mcgraw-hill.com/sites/0072437316/student_view0/chapter11/animations.html# (choose the mitosis and cytokinesis link); http://highered.mcgraw-hill.com/sites/0072437316/student_view0/chapter12/animations.html# (choose the Stages of mitosis link and the comparison one)) • Recognize and place in order and label structures for the 5 mitotic phases and be able to identify a phase from a real photo of a cell in mitosis-go here for practice: http://www.biology.arizona.edu/cell_BIO/activities/cell_cycle/cell_cycle.html and here: http://www.pgjr.alpine.k12.ut.us/science/whitaker/Cell_growth_division/mitosis.html