Cell Cycle Mitosis Meiosis Homework QUIZIZZ https join

Cell Cycle Mitosis Meiosis

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What will be tested: SC. 912. L. 16. 17 Compare and contrast Mitosis and Meiosis and related it to asexual and sexual reproductions and genetic variations SC. 912. L. 16. 18 Explain relationships between mutations, cell cycles and uncontrolled cell growth- cancer. SC. 912. L. 16. 14 Describe Cell Cycle, including mitosis and the importance of chromosome numbers during asexual reproduction SC. 912. L. 16 Describe the process of meiosis – independent assortment and crossing over. Explain how reduction division results in haploid gametes or spores

What you need to know: SC. 912. L. 16. 17 1. Know the difference between Mitosis and Meiosis. SC. 912. L. 16. 14 2. What is the role of mitosis in asexual reproduction? SC. 912. L. 16 3. What is the role of meiosis in sexual reproduction? 4. How does meiosis lead to haploid gametes? 5. How does mitosis and meiosis limit genetic variations? SC. 912. L. 16. 8 6. How does uncontrollable cell growth during a cell cycle lead to cancer? 7. What is happening in each stage of the cell cycle and the different phases of mitosis and meiosis? - Interphase - Anaphase - Prophase - Telophase - Metaphase -Cytokinesis

How we will tackle this these topics: 1. 2. 3. 4. 5. 6. Cell cycle stages Mutations – cancer Cell cycle – asexual division – mitosis- stages of mitosis Cell cycle – sexual division – meiosis – stages of meiosis Compare and contrast mitosis and meiosis

Cell Cycles Series of events that take place in a cell leading to cell division

Interphase Cell Cycle Stages Stage cells are stable, grow and duplicate DNA This is the longest stage. Mitosis Stage where cells prepare to duplicate 4 stages: 1. Prophase 2. Metaphase 3. Anaphase 4. Telophase

Cell Cycles are regulated Cells do not divide forever. If cells divide uncontrollably it results in tumors that can be cancer. Genetic mutations in the DNA cause the uncontrollable division of cells.

Mitosis is Asexual Reproduction Asexual reproduction is a form of cloning. Organisms come from 1 parent with the same genetic. Mitosis creates a new clone cell from the original parent cell.

Types of Asexual Reproduction • Binary Fission Bacteria Mitosis • Budding • Regeneration Twins- Identical • Cloning

Scanning Electron Microscope Protista Euglena 3 D Oxygen Blue Green Algae

How are sexual reproduction and asexual reproduction different from each other? • A. sexual reproduction requires two parents and asexual reproduction requires only one parent • B. asexual reproduction requires two parents and sexual reproduction requires only one parent • C. mutation rates are lower in sexual reproduction than in asexual reproduction • D. asexual reproduction occurs only in multicellular organisms.

The diagram below shows two strawberry plants. Plant 2 is produced asexually from Plant 1. If the leaf cells of Plant 1 have 56 chromosomes, how many chromosomes will be found in the leaf cells of Plant 2? A. 14 How many in the seeds? B. 28 C. 56 D. 112

Prokaryote (vs) Eukaryote What is the difference between Eukaryote and Prokaryote cells? What organisms have Prokaryote cells? DNA What do Prokaryotes and Eukaryotes have in common?

Mitosis

Mitosis stage 1: Prophase 1. Chromosomes condense 2. mitotic spindle forms to organize chromosomes and prepare to separate chromosomes 3. Nucleus breaks down

Mitosis stage 2: Metaphase 1. Chromosomes align at metaphase plate 2. Chromosomes attached to microtubules opposite ends

Mitosis Stage 3: Anaphase 1. Chromosomes pulled apart are 2. Microtubules make ell gets longer

Mitosis Stage 4: Telophase 1. 2 nuclei form 2. Nuclei have identical sets of chromosomes

Mitosis: Cytokinesis Division of the cytoplasm to form two new cells

Mitosis: The End 1. 2 new cells 2. Identical chromosomes 3. Mother cell is original 4. Daughter cell is new clone

Mitosis results in 1 identical daughter cell Mitosis Results - Important: • cell repair • growth This Photo by Unknown Author is licensed under CC BY-SA-NC

Where are chromosomes located?

Chromosomes “Colored Bodies”

Chromosome Structures Draw in Notebook

If a human “somatic “ cell then how many chromosomes should be shown here? Somatic cells are created through mitosis. They should have 46 chromosomes. All body cells are somatic except sex cells These are human chromosomes taken from a scanning electron microscope (SEM).

Interph ase

Prophase

Metaphase

Anaphase

Telophase

Cytokinesis

Identify the Slides

1. What phase of cell division comes immediately after the phase shown here? A) cytokinesis B) metaphase C) cyclin phase D) anaphase

2. What structures are lined up at the center of this cell? A) cyclins B) single chromatids C) chromosomes D) kinases

3. The method by which a cell's cytoplasm divides is called ____. A) DNA replication B) interphase C) mitosis D) cytokinesis

4. Examine the picture of the cell. What phase is the cell in? a. prophase b. anaphase c. metaphase d. telophase

5. What is the structure labeled "X" on the picture? a. centriole b. spindle c. chromosome d. chromatid

6. During which phase do chromosome first become visible? a. interphase b. telophase c. metaphase d. prophase

7. A cell with 10 chromosomes undergoes mitosis. How many daughter cells are created? ___ Each daughter cell has ___ chromosomes. a. 2, 10 b. 10, 2 c. 1, 10 d. 2, 20

8. Each chromosome consists of 2 _____. a. centrofibers b. chromatids c. daughter cells d. centrioles

9. What structure is responsible for moving the chromosomes during mitosis? a. nucleolus b. nuclear membrane c. spindle fibers d. cytoplasm

ITEM SPEC SC. 912. L. 16. 17 10. Mitosis and meiosis are processes involved in cellular reproduction. Which of the following describes an event that results from mitosis but NOT meiosis? A. two stages of cell division B. replication of cellular genetic material C. daughter cells that are identical to the parent cell D. four daughter cells that are produced from each parent cell

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