Unit Plan:  Cell Transport

 

Unit Author

First and Last Name:

Lauren Mezzetti

School District:

Lynn Public Schools

School Name:

Lynn English High School

School City, State:

Lynn MA


Unit Overview

Unit Plan Title:

Cell Membrane Transport

Curriculum-Framing Questions

 

Essential Question

How does each cell membrane structure affect the survival of all living organisms?

 

Unit Questions

How are cell membranes “highly selective”?

 

Content Questions

What is passive transport?

What is active transport?

Unit Summary:

Cells are the basic unit of life; all living organisms are composed of cells.  Each cell has a plasma membrane responsible for allowing substances to enter and exit the cell.    Through classroom and lab activities, students will observe different types of active and passive transport.   Using  those observations, students will explain why cell transport is essential to the existence of each and every cell and to the existence to all forms of life.

Subject Area(s):  Biology

Grade Level:  9th Grade Honors; 10th Grade Biology I

Targeted State Frameworks/Content Standards/Benchmarks:

MA Standard 2.1:  Explain the role of cell membranes as a highly selective barrier (diffusion, osmosis, facilitated diffusion, and active transport).

Student Objectives/Learning Outcomes:

Students will be able to:

1.       Distinguish between passive and active transport.

2.       List types of active and passive transport with examples.

3.       Explain how equilibrium is established as a result of diffusion.

4.       Distinguish between diffusion and osmosis.

5.       Explain how substances cross the cell membrane through facilitated diffusion.

6.       Explain how ion channels assist the diffusion of ions across the cell membrane.

7.       Describe the sodium-potassium pump.

8.       Compare and contrast endocytosis and exocytosis.

 

 

 Procedures:

Day 1 & 2:

§    Class lecture and Power point:  Chapter 5-Cell Transport/Passive Transport

§    Class demonstration of diffusion and osmosis of molecules in different states of matter

§    Homework-Read 5-1 and 5-2; Answer Section Review Questions; Worksheets 5-1 & 5-2

Day 3 & 4:

§    Quiz-Passive Transport

§    Class lecture and Power point:  Chapter 5-Cell Transport/Active Transport

§    Homework-Drawings of cell membrane structure;

Day 5:

§    Quiz-Active Transport

§    Class Activity:  Jigsaw/Comparing Passive and Active Transport-students work in cooperative groups, each one assigned a type of transport to become an “expert” on.  Students then move to other groups and share their information, each student teaching about their type of transport and filling out graphic organizer

§    Homework-Chapter Review Questions

Day 6-7:

§    Lab Activity:  Diffusion and Osmosis-follow lab protocol

§    Homework-Lab Questions

Day 8-9:

§    Computer Lab Activity:  Active Transport in Motion-students observe animations of cell membranes in motion of different types of active transport

§    Homework-Drawings of Active Transport( carrier proteins, exocytosis, endocytosis, cell membrane pumps)

Day 10:

§    Review-Give One, Get One-Passive and Active Transport

§    Homework-Study for Assessment

Day 11:

§    Assessment-Cell Transport

Approximate Time Needed:

9 regular class periods of 50 minutes; 2 lab periods of 90 minutes each

Prerequisite Skills:

Students need to understand the basic structure and function of cells.   Students also need background biochemistry.

Students will need their passwords for the computer lab and skills using the internet

Materials Needed:

Technology

Lab Supplies

·    Projector

·    Computer(s)

·    Internet Connection

·    Internet Browser

 

·    Dialysis tubing (15cm x 2.5)

·    String

·    Glucose solution

·    Glucose test strips

·    Lugol’s solution

·    Starch solution

·    12 -250ml beakers

·    distilled water

·    potato

·    potato corer

·    1.0, .8, .6, .4, .2, 0 sucrose molar solutions

·    balance

Printed Materials:

Modern Biology Text;

Worksheets Section 5.1 || Section 5.2

Membrane drawings;

Cell Transport Graphic Organizer

Lab procedures worksheet

Internet Resources:

http://bulldogbiology.com

http://www.johnkyrk.com/cellmembrane.html

Accommodations for Differentiated Instruction

 

Resource Student:

Vocabulary:  diffusion, osmosis, endocytosis, exocytosis

 

Non-Native English Speaker:

Biology Project en espanol

 

Gifted Student:

AnswerCell Transport Study Guide

 questions from Massengale’s site

Student Assessment:

 

·    Daily Warm-up questions

·    Quiz:  Active transport, Passive Transport

·    Collins:  Diffusion and Osmosis

·    Lab Report:  Diffusion and Osmosis

·    Chapter 5 Assessment