Bell work 11 2 Start your bell work

Bell work 11 -2 Start your bell work on page 61 Draw the cell cycle circle and explain all the parts. Draw replication

Mitosis Foldable • You need 2 sheets of one color • You need one sheet of a different color • You will use your power point notes to create a foldable similar to mine. • Place your foldable in your science journal (it will be included in your journal grade)

Mitosis

Interphase G 1 Phase routine size) the cell grows & carries out functions. (increase in S Phase DNA is duplicated/copied. G 2 Phase Cell prepares for mitosis. Cell grows & produces additional organelles & cytoplasm.

Interphase Animal Cell Plant Cell Photographs from: http: //www. bioweb. uncc. edu/biol 1110/Stages. htm

– Prophase How many chromatids are present in this cell? Chromatin condenses and forms chromosomes. • Pairs of sister chromatids are joined at the centromere. – Nuclear membrane breaks down and disappears. – Centrioles (in animal cells) split and move toward opposite poles of the cell. – A spindle forms fibers that organize themselves around the centrioles and attach themselves to the centromere. u Spindle Fibers are thread-like structures (microtubles) that help separate chromosomes during mitosis.

Prophase Animal Cell Plant Cell Spindle fibers Centrioles Photographs from: http: //www. bioweb. uncc. edu/biol 1110/Stages. htm

Metaphase u Chromosomes line up at the equator of the cell. u Each centromere is connected What do you notice to a spindle fiber. about the spindle fibers and chromosomes?

Metaphase Animal Cell Plant Cell Photographs from: http: //www. bioweb. uncc. edu/biol 1110/Stages. htm

Anaphase u Sister chromatids separate at the centromere & are pulled by spindle fibers to opposite ends of the cell. u Now they again chromosomes.

Anaphase Animal Cell Plant Cell Photographs from: http: //www. bioweb. uncc. edu/biol 1110/Stages. htm

Telophase – Chromosomes gather at opposite ends of cell. • Begin to unravel…back to chromatin! – Nuclear membrane and nucleolus reform – Mitosis is now complete! • All the remains is the division!

Telophase Animal Cell Plant Cell Photographs from: http: //www. bioweb. uncc. edu/biol 1110/Stages. htm

Cytokinesis • Not part of mitosis. • Cytoplasm divide in half. • Each daughter cell has an identical set of chromosomes • Plants – cell plate separates the two new cells • Animals – cleavage furrow pinches the two new cells a part; centrioles double

Animal Mitosis -- Review Interphase Prophase Metaphase Anaphase Telophase Interphase

Plant Mitosis -- Review Interphase Prophase Metaphase Anaphase Telophase Interphase

Table of Contents 10 -22 Pre-AP only Root words page 74 10 -22 Cell Cycle notes page 75 -76 10 -23 DNA notes page 77 10 -23 DNA Double Helix Activity 78 -79 10 -26 DNA Cut and Paste paper 80 10 -26 Bell work page 81 10 -27 DNA Replication 82 -83 10 -28 Electrophoresis 84 10 -28 CSI investigation 85 10 -29 DNA extraction Lab 86 10 -30 Replication practice 87 11 -2 Mitosis Foldable 88 11 -2 Bell work page 89