Answers to the Chapter 12 study guide

Interactive Q 12.1 - a.46 b.23 c.92
Interactive Q 12.2 -a. growth - most organelles and cell components are produced continuously through these sub phases
b. DNA synthesis
Interactive Q 12.3 -a. G2 of interphase b.prophase c.prometaphase d.metaphase e.anaphase f. telophase (and cytokinesis) g.centrosomes (w/ centrioles) h.chromatin(duplicated) i. nuclear envelope j. nucleolus k. early mitotic spindle MPF activityl. aster m. nonkinetichore microtubules n. kinetichore microtubles o. metaphase plate p. spindle q. cleavage furrow r. nuclear envelope reforming
Interactive Q 12.4 - a. a complex of cyclin and CDK that initiates mitosis by phosphorylating proteins and other kinases
b. high at the beginning, low at the end c. constant throughout the cycle d. degraded by MPF activity
Structure your knowledge: 2. you should have drawn 1/2 of a spindle complex and labeled the different components.
3. a. anaphase b.interphase c. late telophase d. metaphase
Test Your Knowledge
1. Go 2.anaphase 3.prophase 4.cytokinesis 5. S phase 6. metaphase 7.telophase 8.prophase 9. prmetaphase 10. G1 phase
Multiple Choice 1.d 2.c 3.d 4.e 5.b 6.c 7.c 8.c 9.b 10.a 11.c 12.e 13.a 14.e 15.a 16.d