Name: ______Date: ______Period: ______
1.5Homeostasis and Cell Processes
Unit 1: Cells
Essential Questions:
What should I know by the end of this lesson…?
- How do organisms maintain homeostasis?
Why do cells undergo mitosis?
In order to survive and function properly, what must all cells be able to obtain?
Explain what homeostasis is and provide examples of homeostasis in various organisms.
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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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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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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What is the central idea in this section?
Please compare unicellular and multicellular organisms in your summary.
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Detail 1 – Please briefly note the steps of the cell cycle as your book describes them:
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MAIN HEADING 4: ______
What is the central idea in this section?
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What is the central idea in this section?
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Write the answer to the ESSENTIALQUESTION below:
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Digital lesson 5 – Homeostasis & Cell Processes
LOG-ON Steps:
- Using Google Chrome, access your science teacher’s Oxford webpage and click on the link for Think Central.
- Think Central USERNAME: (Oxford Username)ex. Swag1234
- Think Central PASSWORD: (Oxford Username again!)ex. Swag1234
- Click on “Things to do”
- Click on “1.4 digital lesson”
- Click on “Student Access ”
- 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 (A & P)Lesson 1.5 Page 1Wagner 2017
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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
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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 mostcomplex.
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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!!!
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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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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 (A & P)Lesson 1.5 Page 1Wagner 2017
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MULTICELLULAR
BOTH
UNICELLULAR
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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.
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PLANT CELLS
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ANIMAL CELLS
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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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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.
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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?
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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?
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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?
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Did you make more paper chain loops when you were working individually or when you were working with your group?
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How does working alone versus working in a group relate to specialization in unicellular versus multicellular organisms?
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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 (A & P)Lesson 1.5 Page 1Wagner 2017
Name: ______Date: ______Period: ______
Blood cell
Nerve cell
Muscle cell
Mod A - Cells & Heredity (A & P)Lesson 1.5 Page 1Wagner 2017
Name: ______Date: ______Period: ______
REQUIREMENTS:
For each superhero please include:
ILLUSTRATION – Illustrate the superhero inside the body. Make sure it’s superpowers reflect its function (or job) inside the body.
STRUCTURE – Give a 2-3 sentence explanation of the hero’s design and shape.
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 specializedstructures (for example, synapses) and chemicals (for example, neurotransmitters).
MUSCLE CELLS
A myocyte(also known as a muscle cell) is the type of cell found in muscle tissue. Myocytes are long, tubular cells that develop to form muscles. There are various specialized forms of myocytes: cardiac, skeletal, and smooth muscle cells, with various properties. The striated cells of cardiac and skeletal muscles are referred to as muscle fibers.Cardiomyocytes are the muscle fibers that form the chambers of the heart, and have a single central nucleus.Skeletal muscle fibers help support and move the body and tend to have peripheral nuclei.Smooth muscle cells control involuntary movements such as the contractions in the esophagus and stomach.
BLOOD CELLS
There are three main types of blood cells: red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes). Hemoglobin (the main component of red blood cells) is an iron-containing protein that facilitates transportation of oxygen from the lungs to tissues and carbon dioxide from tissues to the lungs.Red blood cells or erythrocytes, primarily carry oxygen and collect carbon dioxide through the use of hemoglobin, and have a lifetime of about 120 days.RBCs (red blood cells) are formed in the red bone marrow in the adults. White blood cells, or leukocytes, are cells of the immune system involved in defending the body against both infectious disease and foreign materials.Platelets, or thrombocytes or yellow blood cells, are very small, irregularly shaped clear cell fragments (i.e. cells that do not have a nucleus containing DNA).They circulate in the blood of mammals and are involved in hemostasis, leading to the formation of blood clots. Platelets release thread-like fibers to form these clots.
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Name: ______Date: ______Period: ______
Superhero Name:
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Superhero Structure:
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Superhero Function:
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Superhero Name:
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Superhero Structure:
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Superhero Function:
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Superhero Name:
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Superhero Structure:
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Superhero Function:
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Mod A - Cells & Heredity (A & P)Lesson 1.5 Page 1Wagner 2017
Name: ______Date: ______Period: ______
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:
Blood cell
Nerve cell
Muscle cell
REQUIREMENTS:
For each superhero please include:
ILLUSTRATION – Illustrate the superhero inside the body. Make sure it’s superpowers reflect its function (or job) inside the body.
STRUCTURE – Give a 2-3 sentence explanation of the hero’s design and shape.
FUNCTION – Give a 2-3 sentence explanation of the hero’s powers and why they need them.
Superhero Name:
______Illustrate your superhero below!
Superhero Name:
______Illustrate your superhero below!
Superhero Name:
______Illustrate your superhero below!
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