p. 119 1a) a cell membrane is selectively permeable because it is selective about what it lets in and what it keeps out B) the cell membrane allows some particles to pass through (like oxygen and water), but keeps unwanted particles out. C) this function enables the cell to get what it requires to survive and remain healthy, without letting in harmful or unwanted substances 2. Osmosis and diffusion both refer to the movement of particles from a high concentration to a low concentration. However, osmosis only involves water and is vital for survival and health of cells. 3. Diffusion is the movement of particles in the air as well as through cells. Therefore, Martin should be able to smell the popcorn and the pizza and the smell should get stronger as he gets nearer to the classroom. 4. The wilted carrots will become firm again by absorbing water through the process of osmosis. The water will move from an area of where there is more of it (the container) to an area of where there is less of it (the carrot) 5. Freshwater fish live in an environment where the concentration of water is higher than in their cells so water will diffuse into their cells by osmosis. Thus, freshwater fish have to get rid of this excess water from their cells. Saltwater fish live in an environment where the surrounding water will diffuse out of the cells into the surrounding seawater, so saltwater fish try to keep as much water in their bodies as possible.

When particles spread out from an area of high concentration to area of low concentration, it is classified as A) diffusion B) transpiration C) permeable D) impermeable

Cells in Multicellular Organisms Combine to Form Tissues and Organs Copy This Down 2.5 Cells in Multicellular Organisms Combine to Form Tissues and Organs What did Batman say to Robin before they got in the car? Robin, get in the car.

Refresh Your Memories: Cells Reproduce! Includes multicellular organisms Generally through mitosis & meiosis Includes unicellular organisms Generally through binary division

Cells --> Tissues --> Organs --> Organ System --> Organism

Copy This Down Definition Specialized cells- cells that have specific structures that help them to perform particular functions -         Specialization means that the cells of a multicellular organism must work together to support their own lives, as well as the life of the whole individual. Ex. Red blood cells- small, pliable cells that have no nucleus and are specialized for carrying oxygen to all the cells of the body.

Facts on Red Blood Cells (RBC) Copy This Down Facts on Red Blood Cells (RBC) Do NOT reproduce the same way as other cells How do RBC’s reproduce? Bones in the skeletal system have marrow type of connective tissue found in the bones that produces red blood cells. Can produce 2 000 000 RBC/second!

Copy This Down Animal Tissue All cells in humans can be categorized in four different tissue types: Nervous tissue Muscle tissue Connective tissue Supports and connect Blood, fat, tendon, bone, cartilage Epithelial tissue ‘blanket’ which covers the surface of the body and outside organs

Animal Tissue All organs are made of tissues. Copy This Down Animal Tissue All organs are made of tissues. Each organ is made up of different combinations of these 4 types of tissue. Pg 122 – diagram of the 4 connective tissues.

Copy This Down Tissue in Plants Plant cells are also organized into tissues, but plants have 3 tissue types: 1) Photosynthetic/ storage Example: Inside of a leaf 2) Protective Example: Outside portion of a leaf that is the waterproof layer 3) Transport- transportation of nutrients Vascular tissues- connect roots to the leaves Phloem tissue- specifically allows sugar to travel to the rest of the plant from leaves Xylem tissue- specifically allows water to travel to the rest of plant from the roots

Organs in Plants These tissues are organized into the 3 organs that make up plants: Leaves Roots Stems

Tissue of the Root Photosynthetic/ Storage tissue Protective tissue Phloem Xylem Transport Tissues

Leaves Are the plant’s food-producing organs Where photosynthesis takes place Contains chloroplasts Thin, allowing a large amount of light in Contains stomata Tiny opening that allow air to enter the leaf Spaces between leaf cells allow the air to flow and the guard cells open and close the stomata

Tissue of the Leaf Protective tissue Transport Tissues Phloem Xylem Photosynthetic Tissues Protective tissue Stomata

Transpiration The loss of water in a plant which happens through evaporation Not a problem unless the plant loses too much water and doesn’t replace it by the roots Movement of water throughout the plant happens because of the differences in pressure- high pressure in the root hairs to lower pressure in the leaves

Anatomy from Root To Leaf Root system contains fine ‘root hairs’ If the soil water concentration is greater than root water concentration, water will flow inside of the root hairs This is done by _______________! Water travels from cell to cell until it reaches the xylem tissue The xylem cells move the water up the plant by a build up of water pressure (remember H  L pressure) forcing water up the xylem tissues into stems and leafs

Root System

How Does Water Move Up A Plant? Plants need LOTS of water for A birch can drink 280 L of water PER DAY! Because of loss through transpiration An oak tree can drink 380 L of water PER DAY! Because of loss through transpiration Let’s watch celery drink food coloring! In comparison: In respect adult elephants can drink 225 L of water per day! Us humans are to consume 1.5 liters- 4 liters per day depending on how active we are

Low pressure High pressure

Homework! P. 124 Check & Reflect 2, 3, 4 P. 125 Assess Your Learning 1, 2, 3, 6

Stomata Lab

Animal Sound Review Battle!

Question 1 Cells with similar structure & function are organized into ____________? TISSUE

Question 2 Amoeba move around using _______________________. Pseudopodia

Question 3 Cells typically have selectively permeable membranes. What other types of membranes are there? Permeable membranes & Impermeable membranes

Question 4 What is the name of the process in which unicellular organisms, such as bacteria, reproduce? Binary Division

Question 5 What is the function of the Xylem tissue? Xylem tissue are specialized structures that specifically allows water to travel to the rest of the plant from the roots.

Question 6 A ring road around a city would be representative of what in an animal cell organelle? Cell membrane

Question 7 The structure that we take in food is called the mouth. What is it called in a paramecium? Oral Groove

Question 9 How does the process of osmosis work in celery if it remained in the sun for a while? There is a higher water concentration in the cell compared to outside of the cell. As a result, water will exit the cell.

Question 10 What is transpiration? The loss of water in a plant which happens through evaporation

Question 11 Name 2 differences between plant cells & animal cells Plant cells contain chloroplasts and have a cell wall. Animal cells do not contain either.

Question 12 Of the following, name the faster organism and the slower organism: Amoeba & Paramecium Paramecium is the faster of the two, the amoeba is slower of the two.

Question 13 What is the difference between osmosis and diffusion? Diffusion is the movement of particles from a H  L concentration, while osmosis is the movement of water from a H L concentration

Question 14 Name the four general types of tissue found in humans Nervous tissue, muscle tissue, connective tissue, & epithelial tissue

Question 15 There are 3 factors that can affect what you are able to see in the amount of detail when looking inside a microscope. One is the type of microscope. Name the other 2. Power of the lens, & Quality of the prepared slides

Question 16 There are 3 factors that can affect what you are able to see in the amount of detail when looking inside a microscope. One is the type of microscope. Name the other 2. Power of the lens, & Quality of the prepared slides

Question 17 What is the definition of an isotonic solution? Equal amounts of water going in and out of a cell.

Question 18 In which organ of the plant is the highest concentration of water found? The roots!

Question 19 Name 3 things wrong in this diagram, according to your ‘Microscope Diagram Format’ Sheet:

Question 20 Name 3 things wrong in this diagram, according to your ‘Microscope Diagram Format’ Sheet: 2 1 3 4 10 9 5 8 7 6