1 / 14

Cell Division in Starfish

Cell Division in Starfish. Caroline Mulligan and Shannon Keel. 2. Starfish. Kingdom: Animalia Characteristics of the Animalia (Animal) Kingdom: Multicellular Cells do not have cell walls Capable of responding to stimuli and moving Usually reproduce sexually

oliana
Télécharger la présentation

Cell Division in Starfish

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Cell Division in Starfish Caroline Mulligan and Shannon Keel 2

  2. Starfish • Kingdom: Animalia Characteristics of the Animalia (Animal) Kingdom: • Multicellular • Cells do not have cell walls • Capable of responding to stimuli and moving • Usually reproduce sexually • Heterotrophs (Obtain energy from food) 5

  3. Structures in an animal cell • Nucleus • Spindle Fibers • Centrioles

  4. Starfish- Asterias forbesi • Genus- Asterias • Species- Forbesi • Also known as the Forbes’ Sea Star or the common sea star • Found in the North American Atlantic Coast • They are usually tan, brown, or olive colored with tints of orange, pink, or red 4 5-picture

  5. Starfish • Other species • Asterias amurensis- • Asterias rubens 3

  6. Type of cellular division • Mitosis • Definition- when a single cell divides and makes two identical daughter cells • Both of the daughter cells will have the same number of chromosomes as the parent cell Phases of Mitosis • Prophase • Metaphase • Anaphase • Telophase (Cytokenisis) • Interphase 4 & 8

  7. Prophase • Centrioles start moving to opposite parts of the cell • The first stage of mitosis • Chromosomes condense and become visible • The nuclear membrane breaks down • Spindle apparatus forms at opposite poles of the cell 6, 7

  8. Metaphase • The nuclear membrane disappears • Spindle fibers align chromosomes on the center of the cell nucleus • This line is called the metaphase plate 6

  9. Anaphase • The spindle fibers shrink • The centromere breaks • Sister chromatids split and move to opposite sides of the cell 6

  10. Telophase • The chromosomes reach their cell poles • The nuclear envelope forms • The chromosomes unravel • The spindle fibers break down Cytokinesis • The cell membrane splits • Two identical cells are made 6

  11. Interphase • Phase between cell division • Consists of G1, G0, S Phase, and G2 1

  12. Significance • Understanding Mitosis • Helps to explain how mutations occur • Semi- conservative replication

  13. Works Cited • Lye, B. (2003). Cell division and mitosis. Retrieved from http://biology.kenyon.edu/HHMI/Biol113/mitosis.htm. • Carrington, E., Zabel, E., & D' Arezzo, A. (1998). Field guide to the shores of Rhode Island. Retrieved from http://www.uri.edu/cels/bio/rishores/rocky.htm. • Age Fotostock. (2013). Forbes starfish asterias forbesi adult, in shallow water on beach of broken shells. Retrieved from http://www.agefotostock.com/en/ Stock-Images/Rights-Managed/FHR-34727-00001-207. • Nature Education. (2013). Mitosis. Retrieved from http://www.nature.com/scitable/ topicpage/mitosis-14046258. • Herreid, C. (1999). Starfish. Retrieved from http://wwwbio200.nsm.buffalo.edu/ labs/tutor/Starfish.

  14. Works Cited • Estrada, J. (2013). Cell cycle sequencing. Retrieved from http://joshattualatinhigh4a.edublogs.org/2012/01/03/cell-cycle- sequencing/. • Pearson Education. (n.d.). Prophase. Retrieved from http://www.phschool.com/ science/biologyplace/labbench/lab3/prophase.html. • University of Arizona. (1997). The cell cycle and mitosis tutorial. Retrieved from http://www.biology.arizona.edu/cell_bio/tutorials/cell_cycle/ cells3.html.

More Related