Set up page 16 for Cornell Notes with Title and EQ Happy Friday to you Bio-ninjas! Please follow the instructions in BOTH sections below. Journals: Table of Contents: Right Page 16 Cell Theory/Prokaryotes Left Page 15 Unit 2 Vocabulary Sheet Set up page 16 for Cornell Notes with Title and EQ EQ: What are the defining characteristics of prokaryotic cells? Due today: No assignments due. Notecards due Wednesday! One Day Late: (70) Annotated Notes: 4-9-4 Rule Two days Late: (50) Nucleic Acid Notes (annotated w/ summary) Completed foldable Three Days Late: (0) Comic Strip Biomolecule Worksheet

B.4A – Compare and contrast prokaryotic and eukaryotic cells Standard B.4A – Compare and contrast prokaryotic and eukaryotic cells Essential Question What are the defining characteristics of prokaryotic cells?

Card Sort… Number off… Station assignments… Time Limit

Cell Theory Article Partner A Read Partner B Listen Both Partners discuss and summarize the KEY POINTS of each paragraph. Partners switch roles with each paragraph.

Cell Theory All living things are made up of cells Cells are the smallest units of life All cells arise from other preexisting cells

Can you recall the three components of cell theory without looking at your notes?

Standard B4.A: Compare and Contrast prokaryotic and eukaryotic cells

Cell Types…. Take a look at the pictures Partners compare/contrast the two What are the similarities What are the differences

In Biology, cells are the building blocks for every form of life In Biology, cells are the building blocks for every form of life. All cells are classified into one of two categories… Prokaryotes (prokaryotic cells) or Eukaryotes (eukaryotic cells) And that is it!

Today we will focus primarily on the Prokaryotes What is a prokaryote? https://www.youtube.com/watch?v=pcXdfofLoj0

Prokaryotes: Prokaryotes are unicellular microorganisms Prokaryotes are bacteria! All Bacteria are prokaryotes! These cells lack (do not have) a distinct nucleus These cells lack (do not have) organelles surrounded by membranes These cells are extremely simple and small “Pro Means No!!!” Say It! Lack = does not have Micro = really small Bound = surrounded by Membrane = thin outer covering Organelles = tiny organs

Due to their simplicity, prokaryotes are believed by scientists to have been the earliest forms of life on the planet. They may have lived earlier than 3.77 billion years ago, possibly as early as 4.28 billion years ago, not long after the oceans formed 4.41 billion years ago, and not long after the formation of the Earth 4.54 billion years ago. Bacteria (prokaryotes) are a very diverse group! They can live in the most extreme environments and very common ones as well. There are literally billions of bacteria living on/in you right now!

Prokaryotes: Say It! “Pro Means No!!!”

“Pro Means No!!!” Prokaryote Structures you need to know: Say It! Cell Wall: all prokaryotes/bacteria have a cell wall. Provides support. Material can be different depending on species. Cell Membrane: adds additional support, controls what enters/leaves the cell. Cytoplasm: gel like substance that contains the structures of the cell Ribosomes: responsible for the synthesis of essential proteins/enzymes Flagellum: used for transportation through liquid based environments Nucleoid: Circular free floating DNA, not surrounded by a membrane Say It! “Pro Means No!!!”

Prokaryotes are much smaller than Eukaryotes Prokaryote (Bacteria) Eukaryote (Animal Cell)

Structure determines…function!! Adaptations etc.

Odd One Out- In 50 words or more describe which image is the odd one out and why.

Endosymbiotic Theory Prokaryotic Cell #1 Prokaryotic Cell #1 (chloroplast) NEW Eukaryotic Cell Prokaryotic Cell #1 Prokaryotic Cell #2 (mitochondria) NEW Eukaryotic Cell

Endosymbiotic Theory Videos Endosymbiotic Clay-mation Endosymbiotic Theory: Big Tony and Little Jon

Homework: Produce your own cell analogy for the organelles. Example Function Organelle represented How they are related Mitochondria Ribosomes Nucleus ER Golgi Apparatus Protein Cell membrane Lysosome Nucleolus