Review for Unit Test Catalyst What are two similarities between photosynthesis and cellular respiration? What are two differences between mitosis and meiosis? Write in complete sentences! Don’t talk during the Catalyst!

By the end of today, SWBAT… MASTER the four cellular processes! Objectives By the end of today, SWBAT… MASTER the four cellular processes! Kick Ms. Stroh’s butt tomorrow!

Review Photosynthesis and cellular respiration!!! Our first topic is…

Photosynthesis and Cellular Respiration 6CO2 + 6H2O + sunlight  C6H12O6 + 6O2 C6H12O6 + 6O2  6CO2 + 6H2O + ATP P changes solar energy into chemical energy, CR changes chemical energy into chemical energy Overall purpose is to convert energy from the sun into ATP CR is what actually produces the ATP P happens in chloroplasts (plants only), CR happens in mitochondria (plants and animals!)

6CO2 + 6H2O + sunlight  C6H12O6 + 6O2 C6H12O6 + 6O2  6CO2 + 6H2O + ATP Photosynthesis Water + Carbon Dioxide Glucose + Oxygen It’s a cycle! Goes on and on, always turning solar energy into ATP. Reactants are products, products are reactants. So… what if CR didn’t produce water? P couldn’t happen! And then CR couldn’t happen! And then everything would die! Why do we need to eat plants? To get the glucose to do CR! Cellular Respiration Energy (ATP)

Quiz, Quiz, Trade! You have 15 minutes to quiz as many partners as possible Answer each other’s review questions Guide the other person to the answer Trade questions Hands up, clap up! Find a new partner QQT questions just might be on the test tomorrow… If you don’t participate, it’s your bad…

Review Phases of mitosis and meiosis!!! Our second topic is…

Cell Phases Interphase Prophase Metaphase Anaphase Telophase

Cell Phases – Mitosis Telophase: Interphase: Interphase: Prophase: Anaphase: Metaphase: Time in between cell divisions. At end of interphase, chromosomes double. Spindles pull sister chromatids apart, to opposite ends of the cell. Cleavage furrow forms, “pinching” cell in half Sister chromatids line up in the center of cell (called the metaphase plate) Sister chromatids (the duplicated chromosomes) attach to one another. Time in between cell divisions.

Cell Phases – Meiosis Meiosis has two parts Meiosis 1: genetic information switched, cells divide Meiosis 2: cells divide ONE MORE TIME Meiosis 1 = separation of homologous pairs Meiosis 2 = just like mitosis

Choices Your classwork grade today is based on you completing one of the following: A foldable about mitosis, meiosis, or their differences A poem/rap song about the phases of mitosis 8 possible test questions (with answers!) that you will present to the class

Microscopes! There are microscopes at the lab benches. Each microscope shows an onion root tip cell in one of the phases of mitosis or meiosis. You have five minutes at each microscope. Draw the phase in the correct box. Describe what is happening in the phase.

Review Products of mitosis and meiosis!!! Our third topic is…

Mitosis Mitosis goes through PMAT one time. Therefore, it produces two cells. Each of these cells is exactly the same. Since all somatic cells are 2N, and the cells produced by mitosis are exactly the same as the original cell, the cells produced by mitosis are 2N. Call on students to CFU what “somatic” and “2N” means, what mitosis is used for (growth)

Meiosis Meiosis goes through PMAT two times. Therefore, it produces four cells. Each of these cells is different. Each gamete is different because in meiosis 1 some genetic information gets switched between chromosomes. This is why you do not look exactly like your relatives. Each gamete has half as much DNA as the original germ cell. So, each cell is only 1N. Call on students to CFU what “gamete,” “germ cell,” and “N” means, what meiosis is used for (sexual reproduction), what would happen if gametes had more than 2N chromosomes (retarded babies)

What Do You Think This Means? 89

Haikus from Ms. Stroh’s Chemistry Studs Ms. Stroh’s class is fun Mr. LY’s class is not Chemistry is cool

Haikus from Ms. Stroh’s Chemistry Studs Period two rocks Chemistry is the best class Don’t hate on the best

Haikus from Ms. Stroh’s Chemistry Studs We will dominate Eighty percent mastery Ms. Stroh will be proud

Haikus from Ms. Stroh’s Chemistry Studs Ms. Stroh’s very nice She expects us to work hard LY’s a bully

Haikus from Ms. Stroh’s Chemistry Studs Chemistry is fun Ms. Stroh’s class is NUMBER ONE LY’s class – last, son!

And a final message from Ms. Stroh’s class…

Review Packet If you completed half of the review packet last night… Good work! You get an answer key! Check your answers, and ask me questions. If you did not complete half of the review packet last night… You can work on it now, and ask me questions. No answer key, sorry. Do your work next time.

What is one thing you still do not understand? Exit Question What is one thing you still do not understand? Write in complete sentences! Don’t talk during the Catalyst!