1 / 10

Understanding Prokaryotes and Specialized Cells in Multicellular Organisms

This overview explores the fundamental differences between prokaryotic and eukaryotic cells, emphasizing the structure of prokaryotes such as nucleoid, plasmids, and ribosomes. It elucidates the unique characteristics of specialized cells in multicellular organisms, including muscle, blood, fat, nerve, and plant cells like pollen and guard cells. These specialized cells perform distinct functions, working collaboratively to form tissues and organs. The organization from cells to tissues to organs highlights the complexity and efficiency of life forms.

talib
Télécharger la présentation

Understanding Prokaryotes and Specialized Cells in Multicellular Organisms

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. Prokaryotes and specialized Cells

  2. Prokaryotes

  3. Prokaryote vs. Eukaryote

  4. Nucleoid – circular DNA, no true nucleus Plasmid – additional ring of DNA with specific factor such as antibiotic resistance Cytoplasm – semi fluid with al lthe enzymes needed for metabolism

  5. Ribosomes – smaller type Cytoplasmic membrane – thin, elastic, selectively permeable. Cell Wall – shape and protection, made of MUREIN Capsule – gelatinous sheath of slime layer

  6. Mesosome – tight folds in the plasma membrane, cellular respiration and in some cases photosynthesis occurs here.

  7. Specialized Cells • Perform specialized functions in multicellular organisms • Groups of specialized cells can cooperate to form a tissue • Muscle ORGANIZATION: Cell>Tissue>Organ>Organism

  8. Specialized cells in animals • Red Blood Cells – contain hemoglobin to carry oxygen, no nucleus, bi-concave shape • White Blood Cells – change shape to engulf “invaders,” release enzymes • Fat cells – large vacuoles containing lipids • Nerve Cells- long axons for conduction, synaptic release for “cross talk” • Sperm – flagellum, all genetic info in head, enzyme to penetrate the egg

  9. Specialized cells in plants • Pollen – tiny grain with half the genetic info, hard outer coat • Guard Cells – open and closes leaf pore

  10. Do bacteria have specialized cells???

More Related