Lecture 5, Ch. 12

Lecture 5, Ch. 12 - Lecture#5 Date a Chapter 12~ The Cell...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Lecture #5 ______ Date a Chapter 12~ The Cell Cycle Cell Division: Key Roles a a a a a a a a a a a a Genome: cell's genetic information Somatic (body cells) cells Gametes (reproductive cells): sperm and egg cells Chromosomes: DNA molecules Diploid (2n): 2 sets of chromosomes Haploid (1n): 1 set of chromosomes Chromatin: DNA-protein complex Chromatids: replicated strands of a chromosome Centromere: narrowing "waist" of sister chromatids Mitosis: nuclear division Cytokinesis: cytoplasm division Meiosis: gamete cell division The Cell Cycle a Interphase (90% of G1 phase~ growth S phase~ synthesis of DNA G2 phase~ preparation for cell division cycle) a Mitotic phase Mitosis~ nuclear division Cytokinesis~ cytoplasm division Mitosis a a a a a Prophase Prometaphase Metaphase Anaphase Telophase Mitosis QuickTime and a Cinepak decompressor are needed to see this picture. Prophase a a a a a Chromosomes visible Nucleoli disappear Sister chromatids Mitotic spindle forms Centrosomes move QuickTime and a Cinepak decompressor are needed to see this picture. Prometaphase a a a Nuclear membrane fragments Spindle interaction with chromosomes Kinetochore develops QuickTime and a Cinepak decompressor are needed to see this picture. Metaphase a a a Centrosomes at opposite poles Centromeres are aligned Kinetochores of sister chromatids attached to microtubules (spindle) QuickTime and a Cinepak decompressor are needed to see this picture. Anaphase a a a Paired centromeres separate; sister chromatids liberated Chromosomes move to opposite poles Each pole now has a complete set of QuickTime and a Cinepak decompressor are needed to see this picture. Telophase a a a a Daughter nuclei form Nuclear envelopes arise Chromatin becomes less coiled Two new nuclei complete mitosis QuickTime and a Cinepak decompressor are needed to see this picture. Cytokinesis a a a Cytoplasmic division Animals: cleavage furrow Plants: cell plate QuickTime and a Cinepak decompressor are needed to see this picture. Cell Cycle regulation Growth factors Density-dependent inhibition Anchorage dependence a a a Cancer a a a Transformation Tumor: benign or malignant Metastasis ...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern