1.5 Homeostasis and Cell Processes

Name: ______Date: ______Period: ______

Unit 1: Cells

Essential Questions:

What should I know by the end of this lesson…?

· How do organisms maintain homeostasis?

ü Why do cells undergo mitosis?

ü In order to survive and function properly, what must all cells be able to obtain?

ü Explain what homeostasis is and provide examples of homeostasis in various organisms.

ü Accurately describe how molecules will move across a concentration gradient.

Previewing Vocabulary:

Word & Definition: / Use it in a sentence: / What does it look like?
HOMEOSTASIS – / ______
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PHOTOSYNTHESIS – / ______
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CELLULAR RESPIRATION – / ______
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MITOSIS – / ______
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Mod A - Cells & Heredity (P & S) Lesson 1.5 Page 1 Wagner 2017

Name: ______Date: ______Period: ______

PASSIVE TRANSPORT– / ______
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DIFFUSION – / ______
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OSMOSIS – / ______
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ACTIVE TRANSPORT – / ______
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ENDOCYTOSIS – / ______
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EXOCYTOSIS – / ______
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Mod A - Cells & Heredity (P & S) Lesson 1.5 Page 1 Wagner 2017

Name: ______Date: ______Period: ______

Exploring UNIT 1: Lesson 5

(pages 50-59)

Summarizing Key Supporting Details

Use the organizer to summarize the text. First present the central idea; then record the most important details. Use your own words, and write in complete sentences.

What is the ESSENTIAL QUESTION in this lesson?

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MAIN HEADING 1: ______

What is the central idea in this section?

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Subheading 1: ______

List the 2 things all cells need to carry out life processes. ______

What do you think the book means by “life process”?

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What does the cell membrane regulate for the cell? ______

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Unicellular organisms work alone to maintain homeostasis. How do multicellular organisms maintain homeostasis? ______

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MAIN HEADING 2: ______

What is the central idea in this section?

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Subheading 1: ______

What do plants use to make sugar and oxygen?

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What is photosynthesis? ______

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Where in the plant cell does photosynthesis take place? ______

Subheading 2: ______

What is cellular respiration? ______

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What do animals and plants need for cellular respiration? ______

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How are photosynthesis and cellular respiration related? ______

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MAIN HEADING 3: ______

What is the central idea in this section?

Please compare unicellular and multicellular organisms in your summary.

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Subheading 1: ______

Mod A - Cells & Heredity (P & S) Lesson 1.5 Page 1 Wagner 2017

Name: ______Date: ______Period: ______

Detail 1 – Please briefly note the steps of the cell cycle as your book describes them:

· ______

What is the cell cycle process called? ______

Mod A - Cells & Heredity (P & S) Lesson 1.5 Page 1 Wagner 2017

Name: ______Date: ______Period: ______

MAIN HEADING 4: ______

What is the central idea in this section?

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Subheading 1: ______

What is passive transport? ______

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What is diffusion?______

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What is osmosis?______

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Subheading 2: ______

What is active transport? ______

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How is active transport different from passive transport? ______

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Name the two processes a cell will use if a particle does not fit through the protein channels.

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Subheading 3: ______

What is endocytosis? ______

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Does endocytosis use energy? ______

What is a vesicle?______

How do unicellular organisms us endocytosis? ______

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Subheading 4: ______

What is exocytosis? ______

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How are endocytosis and exocytosis related? ______

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Explain what happens to the vesicle in exocytosis. ______

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MAIN HEADING 4: ______

What is the central idea in this section?

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Write the answer to the ESSENTIAL QUESTION below:

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Digital lesson 5 – Homeostasis & Cell Processes

LOG-ON Steps:

1. Using Google Chrome, access your science teacher’s Oxford webpage and click on the link for Think Central.

2. Think Central USERNAME: (Oxford Username) ex. Swag1234

3. Think Central PASSWORD: (Oxford Username again!) ex. Swag1234

4. Click on “Things to do”

5. Click on “1.4 digital lesson”

6. Click on “Student Access ”

7. Work through the slides in the lesson and complete all tasks in the lesson and on the worksheet.

Screen 2/15: What is your learning goal for this lesson? ______

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Screen 2/15: Click on each of the vocabulary words to learn more about them.

Screen 2/15: Define tissue: ______

Screen 2/15: Define organ: ______

Screen 3/15: Name two organs in your body ______and ______.

Screens 3/15: The largest internal organ in the body is the ______weighing between ______kg and ______pounds.

Screen 4/15: Define unicellular: ______

Screen 4/15: Give two examples of unicellular organisms ______and ______.

Screen 4/15: How do the lifespans of multicellular organisms compare to those of unicellular organisms? ______

Screen 4/15: Complete the questions below.

Mod A - Cells & Heredity (P & S) Lesson 1.5 Page 1 Wagner 2017

Name: ______Date: ______Period: ______

Unicellular Organisms

Does this organism contain more than one cell?

¨ Yes ¨ No

Includes organisms such as humans and rabbits?

¨ Yes ¨ No

Specialized and organized to carry out specific functions?

¨ Yes ¨ No

Multicellular Organisms

Does this organism contain more than one cell?

¨ Yes ¨ No

Includes organisms such as humans and rabbits?

¨ Yes ¨ No

Specialized and organized to carry out specific functions?

¨ Yes ¨ No

Mod A - Cells & Heredity (P & S) Lesson 1.5 Page 1 Wagner 2017

Name: ______Date: ______Period: ______

Screen 5/15: What do plants and animals have in common? ______

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Screen 7/15: Click on each organ. Pick one organ and describe how it works.

Organ: ______

Works by: ______

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Screen 8/15: Click on each part of the respiratory system. What is the job of the trachea? ______

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Screen 10/15: What is structure? ______

Screen 10/15: What is function? ______

Screen 10/15: What is the structure and function of the skin? ______

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Screen 14/15: Sort the terms of levels of organization. Then list them below from simplest to most complex.

· ______

Screen 15/15: Write a 3 to 4 sentence summary, in your own words, about the information covered in the digital lesson. Be sure to respond to the goal of the lesson. (Do not copy this slide.)

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Meet the Microbots

PREviewing:

What do you think a MICROBOT is? What do you think it would be used for?

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Imagine needing surgery. Imagine having tiny robots injected into your body to complete the surgery, instead of the hands of a doctor. How does the thought of robotic surgery make you feel?

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POSTviewing:

Design your own microbot. Explain what it would look like how that design helps it to do its job. How is this like specialized cells in your body?

Create a brainstorming web on the back of this page to help you, and explain your answer in the space below.

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Feel free to brainstorm here!!!

Mod A - Cells & Heredity (P & S) Lesson 1.5 Page 1 Wagner 2017

Name: ______Date: ______Period: ______

DEAN OF INVENTION:

Re-gen Revolution

PREviewing:

Look at the picture on the right. Have you ever seen anything like this before? What do you think is happening, and why?

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Why are starfish able to re-grow arms and lizards are able to re-grow tails, but people are unable to re-grow arms or legs or organs? What happens if a person’s organ fails them?

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POSTviewing:

What did you find most interesting about this video? Did any of it scare you? What new information did you learn about cells?

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Mod A - Cells & Heredity (P & S) Lesson 1.5 Page 1 Wagner 2017

Name: ______Date: ______Period: ______

Levels of Organization

How do cells work together in an organism?

Compare and contrast a MULTICELLULAR organism with a UNICELLULAR organism.

Please describe at least two similarities and two differences.

(Use page 40 in your book to help you.)

Mod A - Cells & Heredity (P & S) Lesson 1.5 Page 1 Wagner 2017

Name: ______Date: ______Period: ______

MULTICELLULAR

BOTH

UNICELLULAR

Mod A - Cells & Heredity (P & S) Lesson 1.5 Page 1 Wagner 2017

Name: ______Date: ______Period: ______

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Mod A - Cells & Heredity (P & S) Lesson 1.5 Page 1 Wagner 2017

Name: ______Date: ______Period: ______

Please read about “Specialized Cells”.

Why does the body need specialized cells?

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Give two examples each of specialized cells in both PLANT and ANIMAL CELLS.

Please describe what the specialized cell is used for.

Mod A - Cells & Heredity (P & S) Lesson 1.5 Page 1 Wagner 2017

Name: ______Date: ______Period: ______

PLANT CELLS

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ANIMAL CELLS

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Name: ______Date: ______Period: ______

How do cells WORK TOGETHER in an organism?

Draw arrows that show how the levels are organized. Start with the lowest level and draw an arrow to the next higher level of organization. Continue until you reach the highest level of organization.

What is a group of cells that performs a particular function called?

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What is a group of tissues that work together called?

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What does division of labor mean?

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Mod A - Cells & Heredity (P & S) Lesson 1.5 Page 1 Wagner 2017

Name: ______Date: ______Period: ______

Cells “R” Us

Quick Lab

Evaluating Specialization

In this activity, you will build a paper chain according to specific steps to explore the advantages of specialization. Many of the tasks that are performed in the human body require multiple steps. Different cells may perform different steps in the process. In this activity, you will first build the chain alone, performing all the steps yourself. Then you will coordinate with a group to build the chain, dividing the steps among the group members, with each one specializing in only one function. You will then evaluate the efficiency and productivity of working alone versus working within a group. You will compare this activity to the hierarchical organization of organisms, from cells to organisms.

PROCEDURE

Review the following instructions for constructing a paper chain:

A. Use a ruler and pencil to mark strips on a sheet of paper that are 8 inches long and 1 inch wide.

B. Use scissors to carefully cut out each strip.

C. Use a marker to write the entire alphabet on each strip.

D. Make the first loop in the chain by curling the strip end to end and using
tape to connect the ends and make a loop.

E. For the rest of the strips, thread one end of the strip through the previous loop,
and tape the ends of the strip to form another loop.

Gather your materials.

When your teacher instructs you to begin, make as many loops in your paper chain as you can within 5 minutes. When time is up, count how many loops you have made and record the number below.

Form a group with four other students. Add up all the chain loops you each made. What is the total number of paper chain loops made by your group working as individuals?

Mod A - Cells & Heredity (P & S) Lesson 1.5 Page 1 Wagner 2017

Name: ______Date: ______Period: ______

Quick Lab continued

With your group, discuss how you could work together to make more paper chain loops in 5 minutes. Do any steps of the paper chain process take a long time? How can you make this step more efficient? How will you organize your group to make more loops?

When your teacher says to begin, work with your group to make paper chain loops for 5 minutes. How many paper chain loops did your group make?

Did you make more paper chain loops when you were working individually or when you were working with your group?

How does working alone versus working in a group relate to specialization in unicellular versus multicellular organisms?

If you have time, repeat Steps 4–6 and try to improve your efficiency.

Super Cells

OBJECTIVE: Work with a partner to explore the structure and function of specialized cells by designing super hero cells with special powers. Imagine that these superheroes are on a mission inside the human body. Design superhero characters to represent the following specialized cells:

Mod A - Cells & Heredity (P & S) Lesson 1.5 Page 1 Wagner 2017

Name: ______Date: ______Period: ______

Blood cell

Nerve cell

Muscle cell

Mod A - Cells & Heredity (P & S) Lesson 1.5 Page 1 Wagner 2017

Name: ______Date: ______Period: ______

REQUIREMENTS:

For each superhero please include:

Ø ILLUSTRATION – Illustrate the superhero inside the body. Make sure it’s superpowers reflect its function (or job) inside the body.

Ø STRUCTURE – Give a 2-3 sentence explanation of the hero’s design and shape.

Ø FUNCTION – Give a 2-3 sentence explanation of the hero’s powers and why they need them.

BACKGROUND INFO:

NERVE CELLS

Cells of the nervous system, called nerve cells or neurons, are specialized to carry "messages" through an electrochemical process. The human brain has approximately 100 billion neurons. Neurons come in many different shapes and sizes. Some of the smallest neurons have cell bodies that are only 4 microns wide. Some of the biggest neurons have cell bodies that are 100 microns wide. Neurons are similar to other cells in the body because they are surrounded by a cell membrane, they have a nucleus that contains genes, and they contain cytoplasm, mitochondria and other organelles. However, neurons differ from other cells in the body because they have specialized cell parts called dendrites and axons. Dendrites bring electrical signals to the cell body and axons take information away from the cell body. Neurons communicate with each other through an electrochemical process. Neurons contain some specialized structures (for example, synapses) and chemicals (for example, neurotransmitters).