11/6 & 11/7 - 7th Grade Agenda Learning Objective: Learn about the Cell Cycle Collect HW: Reading & Note Taking p.79 – 80 Cow Eye Dissection Video Cow Eye Dissection Class Reading p.133-136 HW: Reading & Note Taking p.81 – 84

Reflection Prompt: Write 3 facts that you know about respiration and fermentation.

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) A pairs up with ____ G pairs up with ____ T C

Cell Cycle Stage 1: Interphase: Period before cell division occurs. Cell doubles in size Copy the DNA in its nucleus

Cell Cycle Stage 2: Mitosis One copy of the DNA is distributed into each of the two daughter cells

Cell Cycle Stage 3: Cytokinesis Cytoplasm divides

Cell Cycle Facts 100 rain Some cells divides every 2 hours or less Human Liver cells divides every 22 hours There are about _____ million cells dividing in your body right now!! Most cells divide but human b_____ cells never divide. 100 rain

Cell Cycle Facts Some cells divides every 2 hours or less Human Liver cells divides every 22 hours There are about 100 million cells dividing in your body right now!! Most cells divide but human brain cells never divide.

Chromosomes