* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Mitosis and Cytokinesis
Survey
Document related concepts
Tissue engineering wikipedia , lookup
Signal transduction wikipedia , lookup
Cell membrane wikipedia , lookup
Spindle checkpoint wikipedia , lookup
Cell nucleus wikipedia , lookup
Cell encapsulation wikipedia , lookup
Extracellular matrix wikipedia , lookup
Endomembrane system wikipedia , lookup
Cellular differentiation wikipedia , lookup
Programmed cell death wikipedia , lookup
Cell culture wikipedia , lookup
Organ-on-a-chip wikipedia , lookup
Biochemical switches in the cell cycle wikipedia , lookup
Cell growth wikipedia , lookup
List of types of proteins wikipedia , lookup
Transcript
Cell Growth & Division Mrs. McGee Do Now Estimate how tall you think the tallest man on Earth is? 8ft 3inc. Essential Questions Think. Pair. Share • What do you think happens to our cells when we grow? • Are babies cells similar or different to adults? • Do cells multiply and if so how fast? • How can a starfishes arm or a geckos tail grow back? • How does cancer relate to cell division? Preview Reading • Chapter 10 • • • • • • Outline the chapter Write down subtitles Write down key points in BOLD Write down key words in BOLD You are NOT reading the chapter Look at the pictures • Do you recognize any pictures? If so which ones. Notes REMINDER: During notes you are silent while the teacher is talking. If you have a question or comment raise your hand and wait silently to be called on. Write notes on your note template and attach it to your notebook Notes • In most cases living things grow by producing more cells. • Cells are NOT bigger in adults! • The larger a cell becomes, the more demands the cell places on its DNA. In addition, the cell has more trouble moving enough nutrients and wastes across the cell membrane. Notes cont. • DNA “Overload”- DNA does not increase when a cell grows. • Eventually the growth of a cell would led to an information crisis. Ex: Library in a small town that begins to grow • PAGE 243 • SURFACE AREA: multiply length X width X # of sides • VOLUME: multiply length X width X height • As a cell grows the volume increases more rapidly than it’s surface area • When the cell becomes larger its ratio of surface area to volume decreases. Cell Division • Before a cell becomes to large it divides forming two daughter cells • Before division occurs the cell replicates or copies the DNA (genetic information) • Each daughter cell then gets a complete copy of that information Think Box • Which type of cell do you believe would have a more complex way of replicating? WHY? Prokaryotic or Eukaryotic • Prokaryotic cell division is simple • Eukaryotic cell division is more complex and occurs in two stages 1. Mitosis 2. Cytokinesis POGIL: The Cell Cycle • Complete #1-5 • Work Quietly and in groups of 2-3 • Your group needs to agree on the answer before you write it down • If you have a question raise your hand and wait silently in your seats Do Now • What is a tumor and how does one grow? Be ready to share your thoughts Watch Video • Be ready to answer the following questions after the video: 1. Which types of cells divide quicker: Cancer Cells or Normal Cells 2. How do you think a tumor could be created? • https://youtu.be/IeUANxFVXKc (Displays Cell Division) • https://youtu.be/0Rql-PEHeAk (5 crazy tumors) POGIL • Complete #6-10, #11-21 • Work Quietly and in groups of 2-3 • Your group needs to agree on the answer before you write it down • If you have a question raise your hand and wait silently in your seats Closing Post it note Parking Lot Write! • Something you learned or a question you have and post it when the bell rings • HW- Finish POGIL Questions #11-21 Do Now • Do you know someone who has cancer? If so write down what you know about it. Review Post Its •Facts •Misconceptions •Questions Video: What is cancer? • https://youtu.be/SGaQ0WwZ_0I Questions: • Are all types of cancer the same? • Are all tumors cancerous? POGIL • Complete #23-27 • Work Quietly and in groups of 2-3 • Your group needs to agree on the answer before you write it down • If you have a question raise your hand and wait silently in your seats As a class will will discuss and answer the extension questions Exit Ticket • 3 things you learned today • 2 things that helped you • 1 question Complete silently and independently When the bell rings place it in the bin Part 2: Cell Growth and Division Do Now 1. Label the parts of the cell using the following words: cell membrane, cytoplasm, nucleus, DNA, mitochondria Review Cell Structures Review Exit Tickets Review 3-2-1 Facts, Misconceptions, Questions Notes REMINDER: During notes you are silent while the teacher is talking. If you have a question or comment raise your hand and wait silently to be called on. Write notes on your note template and attach it to your notebook DNA: Chromosomes • DNA is stored in the nucleus • DNA is arranged in structures called chromosomes • Every organism has a set number of chromosomes • Humans have 46 Chromosomes • Before cell division each chromosome is copied • Then, each chromosome consists of two identical “sister” chromatids. • As the cell divides the sister chromatids separate and one goes to each of the 2 new cells. • Chromosomes are attached at an area called the centromere THINK How did you grow from the size you were as a baby to the teenager you are today? Explain your hypothesis. Purpose of cell division: • Growth Purpose of cell division: • Repair Purpose of cell division: • Reproduction The Cell Cycle • The cell grows, prepares for division, and divides to form two daughter cells, each of which then begins the cycle again • There are four phases. The 4 phases • Mitosis and cytokinesis take place during the M phase • Chromosome replication take place in the S phase • Between those phases are G1 and G2. • G= Gap • G1 and G2 are points of intense growth and activity Interphase During most of its life, a cell is in a stage called interphase. cell performs its functions (jobs) and keeps itself alive the organelles and DNA replicate (copies) to prepare for cell division Interphase – the growth period when the cell performs its functions and prepares for cell division Growing…but not too much! Getting ready to divide! I’m busy doing my job! Cube Activity • 5 Groups • Quietly roll the cube and work together to answer the questions • Write down the question and the answer in your notebook When you are done create vocab charts • Cell Division • Mitosis • Cytokinesis Exit Ticket • Silently complete the exit ticket by yourself • If you have a question raise your hand • Turn in your exit ticket into the bin when the bell rings Part 3: Cell Growth & Division DO NOW • What are the three reasons why we need cell division? 4 Groups • Create a poster • Have a large title (the name of the stage) • Have a description of what happens during this stage • Have an illustration that represents what happens during this stage 20 minutes Prophase Metaphase Anaphase Telophase Notes REMINDER: During notes you are silent while the teacher is talking. If you have a question or comment raise your hand and wait silently to be called on. Write notes on your note template and attach it to your notebook TODAY WE ARE USING WHITE BOARDS WITH A PARTNER! Mitosis • Mitosis is the process by which the nucleus of the cell is divided into two nuclei with the same set of chromosomes as the parent cell. Mitosis • After interphase, the cell begins mitosis. • There are 4 stages in Mitosis • Prophase Pee • Metaphase MAT! • Anaphase • Telophase Prophase • 1st & longest • DNA wraps up into structures called chromosomes, which are made of two copies of identical DNA called sister chromatids • Centrioles start making spindle fibers • The nuclear membrane breaks down Metaphase • Chromosomes line up in the center of the cell and • Spindle fibers attach to the center of the chromosomes at their centromere Anaphase • Centrioles pull on the spindle fibers • Sister chromatids separate into individual chromosomes • Sister chromatids are pulled to opposite sides of the cell Telophase • Chromosomes gather at opposite ends of the cell • Two new Nuclear Envelope form • Spindle fibers disappear • Cell Division is NOT complete Cytokinesis To finish cell division, another stage called cytokinesis must occur. •Division of the cytoplasm. •Usually occurs at the same time as telophase. •The cytoplasm pinches in half. •Each daughter cell has an identical set of replicate chromosomes. The cell divides everything else up between the two new cells. Cyclin • Cyclins regulate the timing of the cell cycle in eukaryotic cells. • It lets the cells know then to speedup, slow down or stop producing cells Revise Posters • If there is any facts you want to revise or add please make those changes • Prepare for Presentation • Figure out who is presenting each fact 5 minutes Presentations • First: Prophase • Second: Metaphase • Third: Anaphase • Fourth: Telophase SPEAK LOUDLY AND CLEARLY Please be a respectful and quiet audience or you will lose participation points. Do Now • What does PMAT stand for? • Prophase • Metaphase • Anaphase • Telophase Video of Mitosis Now you try! • In partners, you will model mitosis using pipe cleaners and yarn • You will receive a set of tools • We will do it once together, and I will guide you through the steps • Then, as a class, different people will guide us through the steps • Then, individually, you and your partner will alternate through the steps Interphase Prophase Prophase Metaphase Anaphase Telophase Cytokinesis Worksheets- Extra Practice • Study for performance task tomorrow- 100 points! • You will independently model and explain each stage of mitosis using yarn, a white board, or a pen and pencil Do Now •Draw out each stage of Mitosis Review Stations • While you wait to complete your performance task you will be visiting different stations • At each station you will be completing a task to help you review for the test • If you finish early please finish study guide, vocab charts, organize your notebook, read ch.10 or assist a classmate • If you are off task and distracting other classmates you will lose points off your performance task! Performance Task- 100 points •You will independently model and explain each stage of mitosis using yarn, a white board, or a pen and pencil Part 4: Review Day Do Now Is cell growth and division a cycle? What other cycles exist on Earth? SOCRATIVE Quiz • Log on to ipad • Classroom code: fweBhSHyj • Type in your first and last name Part 5: Test Cell Growth and Division Cell Cycle Make up Mini-Project *worth 50 points Your sign will… •Have a large title (the name of the stage) •Have a description of what happens during this stage •Have an illustration that represents what happens during this stage •Have a heading on the back