DAYSHEET 40: Types of Transport

Transcription

1 UNIT 3: The Cell DAYSHEET 40: Types of Transport Biology I Name: Date: Bellringer/Catalyst: As you read the following passage, highlight or underline any examples of symbiotic relationships. Then in the margin, identify the symbiotic relationship as mutualism (M), commensalism (C), or parasitism (P) The Amazon Rainforest In the Amazon rainforest, there are many different types of plant and animal species that are all interacting with one another. The rainforest is known for its very dense growth of plants. One example of these plants found in tropical rainforests is the bromeliad. The bromeliad flower grows high in the branches of the banana tree. The bromeliad flower is able to get more sunlight from its perch in the banana tree, and the banana tree is unaffected. The bromeliad s leaves form a cup-like structure that is able to hold water. This water provides a feeding and breeding area for many insects and frogs. Fig trees also grow in the Amazon. Hundreds of different species of fig trees often grow close to one another. Each species is pollinated by a specific wasp. The wasp consumes the nectar of the fig trees for food, and in doing so, carries pollen from tree to tree, helping the trees to reproduce. An abundance of fascinating animals are also found in the rainforest. Three-toed-sloths are an animal known for a very unusual behavior they move incredibly slowly. In fact, sloths move so slowly that a species of mold usually begins to grow in their fur! The sloth is not hurt nor harmed by the mold s presence. Rainforests have a tropical climate high precipitation and warm temperatures. These conditions favor a number of organisms that are not welcomed by humans. For example, mosquitoes prosper in these conditions, and humans who are in the area risk being bitten by a mosquito. Sometimes these mosquitoes carry deadly diseases, like typhoid, malaria, and yellow fever. Tapeworms and ringworms, which can enter the human body and live in the digestive track for years feeding off the nutrients of their host, are also found in the rainforest. So while the Amazon rainforest has a host of fascinating life forms that have attracted humans for centuries, they also contain many dangers, so you may want to think twice before planning your visit! Biology Objective: I can identify the different types of cellular transport Homework: Homework 40 is due next class

2 Activity 1: Cornell Notes Main Ideas / Questions: Notes: The cell membrane controls The cell membrane is made mostly of, but also has that help move molecules in and out of the cell Stop-and-Jot: In which of the following beakers below is there a higher concentration of salt A or B? Where will the salt tend to move? 3. There are 2 ways molecules are transported in and out of the cell: 1) transport = the transport of substances into or out of the cell from an area of concentration to an area of concentration using cell energy a. Example: b. Example: c. Example:

3 Main Ideas / Questions: 4. Notes: 2. transport = the transport of substances into or out of the cell from an area of concentration to an area of concentration the use of cell energy Stop-and-Jot: What are the key differences between passive and active transport? What are some useful analogies to use to remember these differences? 5. = movement of small solute particles from an area of high concentration to an area of low concentration without the use of cell energy Type of Transport: Key Points:

4 Main Ideas / Questions: 6. Notes: = movement of water molecules from an area of high concentration to an area of low concentration without the use of cell energy Type of Transport: Key Points: Stop and Jot: What is the difference between diffusion and osmosis? 7. = movement of large molecules from an area of high concentration to an area of low concentration without the use of cell energy, but with the assistance of channel proteins Type of Transport: Key Points: Stop and Jot: What is the difference between diffusion and facilitated diffusion? 8. = movement of large molecules from an area of low concentration to an area of high concentration with the use of cell energy (ATP) and protein pumps Type of Transport: Key Points: Stop and Jot: What is the difference between facilitated diffusion and active transport?

5 Activity 2: Time to Practice! 1. Fill: Place a CHECK in the box that fits with each of the following types of transport Transports substances into the cell Uses proteins Uses energy Transports substances from a HIGHER to LOWER concentration Transports substances from a LOWER to HIGHER concentration Transports water Diffusion Osmosis Facilitated Diffusion Active Transport 2. Identify: Given the following example, underlie key words and then identify the type of transport that occurs. A word bank has been provided for you. Some words will be used more than once. Diffusion Osmosis Facilitated Diffusion Active Transport (A) No energy or help from proteins is required to move small molecules in this kind of transport. (B) Proteins must help large molecules such as sugar and fat pass through the membrane, but no energy is needed (C) There is a higher concentration of salt outside the cell than inside. Salt comes into the cell without help from proteins. (D) Energy is needed to help move substances into the cell (E) Water moves into the cell through this process. (F) There is a higher concentration of a substance inside the cell than outside, but the cell continues to bring it inside anyways.

6 3. Practice Quiz: Use test-taking strategies to complete the practice quiz! 1. Which of the following is not a function of the cell membrane? a. Controlling what enters and exits the cell b. Transport of materials into the cell c. Transport of waste out of the cell d. Breaks down lipids, carbohydrates, and proteins from foods 2. Which of the following best describes active transport? a. Does not use the assistance of proteins to move molecules b. Moves without the help of any other substances c. The way that water moves d. Uses energy 3. A very large molecule moves into the cell from an area of low concentration to an area of high concentration. What kind of transport is most likely? a. Diffusion b. Osmosis c. Facilitated diffusion d. Active transport 4. A large molecule moves into the cell from an area of high concentration to an area of low concentration using a channel protein. What kind of transport is most likely? a. Active transport b. Diffusion c. Facilitated diffusion d. Osmosis 5. What is one similarity between facilitated diffusion and active transport? a. They both use energy b. They both require the assistance of proteins to move c. They both move substances from areas of high concentration to areas of low concentration d. They are both used to move small molecules 6. Which of the following is an example of active transport? I. Diffusion II. Osmosis III. Facilitated Diffuision (A) I only (B) I and II (C) I, II, and III (D) None of the above

7 HW40: Types of Transport Name: Biology I Date: Define: Define the following types of cell membrane transport. 1. Diffusion: 2. Osmosis: 3. Facilitated diffusion: 4. Active transport: Identify: Identify the following types of cell membrane transport. 1. Diagram A shows what type of transport? (A) Facilitated Diffusion (B) Diffusion (C) Osmosis (D)Active Transport 2. Diagram B shows what type of transport? (A) Facilitated Diffusion (B) Diffusion (C) Osmosis (D)Active Transport

8 3. Diagram C shows what type of transport? (A) Facilitated Diffusion (B) Diffusion (C) Osmosis (D)Active Transport 4. Diagram D shows what type of transport? (A) Facilitated Diffusion (B) Diffusion (C) Osmosis (D)Active Transport Explain: Answer the following questions using complete sentences.. 1. What is the main difference between passive and active transport? 2. What is the job of proteins in transporting substances across a membrane? Draw: (A) Choose a type of transport. (B) Draw and label a picture of that form of transport in the box below!