11/4 & 11/5 - 7th Grade Agenda Learning Objective: Learn about the Cell Cycle Collect Reading & Notetaking p.77 & 78 Collect HW: Signed Grade Printout Collect HW: Cell Model Textbook Reading: p.125-133 HW: Reading & Note Taking p.79 – 80

Reflection Prompt: Write 3 facts that you know about photosynthesis or respiration. (Write in complete sentence)?

Chloroplasts orophyll Chl________ pigments inside chloroplasts absorb su________ and convert it into energy nlight Chloroplasts

Stomata arbon C_________ D________ is absorbed through openings in the underside of the leaves called Stomata ioxide

Close up of Stomata

Do plants produce carbon dioxide? (Yes or No) Can plants produce oxygen at night? How can plants create the required energy at night? At night, plants breath in small amount of oxygen and produce carbon dioxide

Autotrophs & Heterotrophs Which organisms in these photos are autotrophs? Which organisms in these photos are heterotrophs?

What is Respiration? What is respiration?

Respiration Demonstartion Cup your hand and hold it over your mouth Breath out Rub your hands

What is Respiration? tosynthesis ergy bohydrate During pho______________ plants capture and save en_____ in the form of car_________ (sugars and starches) ergy bohydrate

What is Respiration? After you e__, your body converts the carbohydrates into gl_______ (type of sugar) at ucose

Respiration: 2 Stage Process ucose Stage 1: Gl______ is broken down into smaller molecules Stage 2: Mit________ takes the ox______ and glucose and converts it into ca_____ dioxide, w______ & energy ochondria ygen rbon ater

What is the relationship between Photosynthesis and Respiration? Photosynthesis and respiration can be thought of as opposite processes Together these two process form a cycle that keeps the level of oxygen and carbon dioxide fairly constant

Fermentation provides en_______ from cells without using ox_______ ergy ygen

Alcoholic Fermentation: Y_____is used to break down s______ and produce carbon dioxide (making br_____ and be_____) east ugar ead er

Lactic Acid Fermentation happens when you over work your m_______ and your cells don’t get enough o_______ uscle xygen

How do we grow? Does our cells get larger? Cell Division

Cell Cycle Interphase Prophase Cytokinesis Metaphase Telophase DNA Replicate Prophase Chromosomes pair up Cytokinesis Two cell are creates Metaphase line up in middle Telophase Chromosomes move far away Anaphase Chromosomes pull apart

Cell Cycle Interphase Cytokinesis Mitosis Two cell are creates DNA Replicate Cytokinesis Two cell are creates Mitosis Nucleus divide into two A copy of DNA is distributed to each Nucleus

Cell Cycle ? ? ? ? ? ? Interphase Prophase Cytokinesis Metaphase Telophase Anaphase ? ?

Interphase ob Stage 1: Interphase: Period before cell division occurs. Cell is doing its J___ while growing (doubles in size) Replicates (make a copy) its DNA ob

Mitosis : Prophase air up Prophase: Identical Chromatids p______. They are held together by a centromere air up

Mitosis : Metaphase iddle Metaphase: Chromosomes line up in the m______ iddle

Mitosis : Anaphase part Anaphase: The centromeres split and the chromosomes are pulled a______ part

Mitosis: Telophase ar Telophase: Each set of chromosomes are F___ away and a nucleus forms around them ar

Cytokinesis oves Cytokinesis The cell membrane m______ inwards then pinches in two. This form 2 identical cells oves

DNA – Deoxyribonucleic Acid Nitrogen Based Molecules (4 Letters of DNA Alphabet) Adenine – Thymine Guanine - Cytosine

Reflection Prompt: Draw the Elodea Plant Cell through the microscope and write one question that you have about the observation.