Wednesday – 9/14 Please answer the following questions on a sheet of loose-leaf notebook paper. 1.How many cells do you think you have in your body? Explain how you came up with this number. 2.How many different types of cells are there in the whole world? Explain how you came up with this number. Hold on to these answers, we’ll review them in a bit.

M&M’s Compare the regular M&M to the pretzel M&M. Discuss the similarities and differences with your shoulder partner. Draw and complete the Venn Diagram on your warm- up page. Regular M&Ms Pretzel M&Ms

Back to the Warm-Up There are approximately 37.1 trillion cells in your body.

Name the Groups Try and determine what all of the items in each group have in common.

Levels of Organization Remember, cells are made of organelles. An organelle is basically a tiny organ that is found within the cell. Each organelle performs a specific function for the cell. (We’ll learn about these later.) Elements  Molecules  Organelles  Cells

Membrane-Bound… What’s That? Organelles can be membrane-bound, or not. Membrane-bound means the organelle is surrounded by a membrane.

Check it Out! On the next few slides, try your best to determine whether or not the organelle is a membrane-bound organelle. Fill out the chart in your booklet by circling the appropriate box for each organelle.

Mitochondria

Chloroplast

Ribosome

Lysosome

Nucleus

The nucleus is responsible for storing DNA. There are MANY more organelles, but we will cover the rest of the organelles and their functions later.

2 Types of Cells Prokaryotes Bacteria Prokaryotes are always going to be bacteria! ALWAYS! Every single prokaryotic cell is a bacteria. Eukaryotes Animal cell Plant cell Eukaryotes are every cell type besides bacteria cells. The most common types are plant and animal cells, but there are others like a fungus. There are only 2 types of cells in the world. A cell can either be a prokaryote or a eukaryote.

Examples Animal Centrioles Smaller vacuole Plant Chloroplast Larger vacuole Fungi Protists Bacteria Prokaryotes Eukaryotes

Prokaryotic Cells Definition: simple, single celled organisms that lack a true nucleus. Can exist in a large range of environments. – They can live in hot, harsh temperatures – They can live without oxygen – They can live around extreme salt or methane – Some can make their own food Pro. rhymes with NO, meaning NO membrane-bound organelles.

Eukaryotic Cells Definition: Cells that contain: – a TRUE nucleus with DNA inside – membrane-bound organelles Considered to be more complex because they are larger and have many organelles in an organized manner. Eu. ryhmes with DO, meaning they DO have membrane-bound organelles.

Which arose first? Predict which one of the following cell types was the first one on Earth. Animal Centrioles Smaller vacuole Plant Chloroplast Larger vacuole Fungi Protists Bacteria Prokaryotes Eukaryotes

Readings As you read the article, look for the following information. Highlight your answers using a dry erase marker on the plastic sleeve. 1.Are you reading about prokaryotes or eukaryotes? 2.When did that cell type arise? 3.How are prokaryotes related to eukaryotes existence?

Cell Theory Introduction The Wacky History of Cell Theory

The Cell Theory The cell theory is made up a 3 statements and summarize the findings of these scientists. Discuss what 3 statements you think make up the cell theory with your shoulder partner. 1.All living things are made up of __________ cells. 2.The _____ is the basic unit of function. 3.New cells form from _____________cells. 1 or more cell preexisting

Whiteboard Practice Analyze the picture, chart, table, or graphic organizer to determine whether or not the cell being described is a prokaryote or eukaryote. You will write your answer AND defend your claim on your whiteboard.

Exit Ticket Answer the following questions on the paper I have provided you. 1.Describe the main differences between a prokaryotes and a eukaryotes? 2.Why are eukaryotic cells considered more complex than prokaryotic cells? 3.Prokaryotic cells are ALWAYS which of the following types of organisms? Plant, animal, or bacteria 4.Describe which type of cell you think was on the earth first, and explain your reasoning.

Friday – 9/16 Write the warm-up underneath the Venn Diagram on the loose- leaf sheet from yesterday. Explain whether this cell is prokaryotic or eukaryotic. Be specific.