monday 12-15-14 Learning objective: How big are cells What a model cell looks like Entry Task: Copy this organizational chart for chapter 7 – The cell

Plan of the day Grade short answer questions of chapter 2 test Go over questions Start chapter 7 – The cell works video

A tour of the Cell Chapter 7 http://www.cellsalive.com http://www.ibiblio.org/virtualcell/textbook/chapter3/chapter3.htm http://vcell.ndsu.edu/animations/

Cell theory All living things are composed of cells Cells are the basic unit of function and structure in living things All cells come from pre-existing cells

http://www.cellsalive.com/howbig.htm

tuesday 12-16-14 Difference between an eukaryotic and prokaryotic cell Learning objective: What are the main organelles and their function Difference between an eukaryotic and prokaryotic cell Entry Task: What are some organelles that you already know?

Plan of the day chapter 7 – The cell works video Eukaryotic vs. prokaryotic cells

After watching video, Complete the Cell Organelles table working with your group members Use section 7.2 (pages 196-207) When finished with the table, go to section 7.1 (page 194) and do a Venn diagram to compare and contrast eukaryotic and prokaryotic cells

Main cell parts and functions

Cytoplasm: holds organelles - transport medium

Nucleus: Control center – contains the DNA (genetic material)

Ribosomes: make proteins

Ribosome

RER: modify and transport proteins

SER: Production of lipids (fats)

What is the difference between the rough ER and the smooth ER?

Golgi apparatus: Process and package proteins and lipids

Chloroplast: Where photosynthesis occurs

Mitochondria: Release energy usable by the cell

Lysosome: Breaks down macromolecules into particles the cell can use

wednesday 12-17-14 Learning objective: What are the main organelles and their function Difference between an eukaryotic and prokaryotic cell Entry Task: Sit at a computer and get to the class webpage

Plan of the day Computer activity on cell organelles and function

thursday 12-18-14 What organelles take part in the making of proteins? Learning objective: Compare and contrast animal vs. plant cells Entry Task: What organelles take part in the making of proteins?

Plan of the day Compare and contrast animal cells vs. plant cells Organelle riddles

Eukaryotic vs. prokaryotic cells Contains nucleus Many organelles present 10-100 micrometers Appeared later in the fossil record Lacks a nucleus Lacks organelles 1-10 micrometers Appeared earlier in the fossil record

Two Basic types Prokaryote Eukaryote Cell membrane cytoplasm nucleus Eukaryote Cell organelles

Compare and Contrast Prokaryotes Eukaryotes Nucleus No nucleus Smaller Nucleus Endoplasmic reticulum Golgi apparatus Lysosomes Vacuoles Mitochondria Cytoskeleton Cell membrane Ribosomes Cytoplasm

Page 206

Compare/contrast plant and animal cells Plant cell Animal cell

Compare/contrast plant and animal cells Plant cell Ribosomes Mitochondria Golgi apparatus Cell wall Large vacuole Centrioles Flagellum (in some ) Endoplasmic reticulum Cell membrane Chloroplast Nucleus

Organelle journal Imagine that you are inside of a cell (a eukaryotic one) and that you are on of the organelles in the cell (cell membrane included). Which organelle would you chose to be? In jour journal, write a paragraph or two explaining to an ‘imaginary tourist” visiting the interior of the cell: What organelle you are What is your function as part of the cell (how hard is your job, do you communicate with other organelles?, etc)

Organelle riddle Imagine that you are inside of a cell (a eukaryotic one) and that you are on of the organelles in the cell (cell membrane included). Which organelle would you chose to be? Think about two organelles or cell parts of a eukaryotic cell (do not tell others). In a paper, not your journal, write a paragraph or two explaining what each of these organelles function in the cell is, where it is located, if it interacts with other cell parts, etc. Write as if you were the organelle! I will collect your organelle riddles at the end of class today

Friday 12-19-14 Learning objective: How does the Structure of the cell membrane look like Entry Task: The cell membrane is selectively permeable. What does this mean? (check page 205)

Plan of the day Finish Organelle riddles Structure of plasma/cell membrane

Cell Membrane Composed of proteins and a type of lipid called phospholipid The structure that makes the plasma membrane is called the phospholipid bilayer http://www.wisc-online.com/Objects/construction-of-the-cell-membrane/

Phospholipid molecule of Plasma Membrane

Plasma Membrane Structure http://www.wisc-online.com/Objects/construction-of-the-cell-membrane/

monday 1-5-15 happy new year!! Learning objective: Explain diffusion Different types of transport across the cell membrane Entry Task: Go to section 7.3 in your book (pages 208-213). Scan through it and write the different types of transport across the cell membrane LAST DAY TO TURN IN MISSING ASSIGNMENTS FOR THE SEMESTER IS THURSDAY, January 15

Plan of the day Diffusion demo (dye in beaker with water) Plasma membrane transport notes and mini-poster

TYPES OF TRANSPORT ACROSS THE CELL MEMBRANE mini-poster (pages 208-213) On the paper provided by your teacher, Include a drawing of each of the different types of cell transport: Passive transport Diffusion Facilitated diffusion Osmosis Active transport Molecular Transport Bulk transport Endocytosis exocytosis For each of the types of transport, include the following information: Any special characteristics of your type of transport The overall movement of particles that takes place Whether or not energy is required and WHY

TYPES OF TRANSPORT ACROSS THE CELL MEMBRANE

Diffusion The net movement of particles of a substance from where they are more concentrated to where they are less concentrated

Diffusion If system is left alone the molecules will eventually spread themselves equally every where – the molecules do not stop moving (Brownian movement)

Ways in which the cell membrane gets molecules in and out of cell No cell energy used Diffusion Facilitated diffusion Cell energy used Active transport Bulk transport

Types of Transport through plasma membrane Passive transport Diffusion: some molecules cross the plasma membrane with no expenditure of energy or help from transport proteins Facilitated diffusion: Transport proteins provide a pathway for certain molecules to pass Osmosis: diffusion of water through a membrane Active transport

Water moves from high concentration to low concentration

What happens to a red blood cell when it is placed in water with different concentrations of salt?

Results of water movement on cells – Osmotic Pressure

Types of Transport through plasma membrane Passive transport Diffusion Osmosis Facilitated diffusion Active transport: A transport protein pumps a solute across a membrane in the opposite direction to the way it travels with diffusion. It requires chemical energy.

Bulk Transport (type of active transport) For larger molecules and solid clumps of material the cell uses Endocytosis – cell takes in materials in by infoldings in the membrane Phagocytosis Exocytosis – cell releases materials through membrane http://www.ibiblio.org/virtualcell/textbook/chapter3/cmf4a.htm http://www.youtube.com/watch?v=aWItglvTiLc

Homeostasis homeo_=same _stasis=standing still Unicellular organisms as well as cells in multicellular organisms must maintain homeostasis, or that is to say, relatively constant physical or chemical conditions.

To maintain homeostasis Unicellular organisms Grow Respond to environment reproduce Multicellular organisms Have specialized cells that communicate with each other

Examples of Homeostasis in humans Thermoregulation Glucose regulation

Cell Specialization In multicellular organisms there is a division of labor among the specialized cells

Levels of Organization cell organ system tissue organ organism

Positive/negative feedback loops Homeostatic loops http://www.youtube.com/watch?v=jkioZCDHT_E&list=PL7A750281106CD067&index=38 Positive/negative feedback loops https://www.youtube.com/watch?v=CLv3SkF_Eag

Examples of Homeostasis in humans