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# 3.3: Activities and Answer Keys

Difficulty Level: At Grade Created by: CK-12

## Activity 2-1: Making a Cell Model

### PLAN

Summary Students begin by drawing a picture of a cell and labeling its parts. They use their drawings as a blueprint to design and construct a 3-D model of a cell. Students explain the function of each part of the cell model.

Objectives

Students:

\begin{align*}\checkmark\end{align*} draw an accurate picture and identify the parts of a cell.

\begin{align*}\checkmark\end{align*} design and construct a three-dimensional model of a cell.

\begin{align*}\checkmark\end{align*} explain the function of each part of their cell model.

Student Materials

• Activity Report
• Determined by each team, with teacher approval

Teacher Materials

• Be sure to guide students to select materials that will not spoil.
• Cell parts or organelles can be represented by a variety of materials, such uncooked pasta; dried fruit; plaster of paris or clay models.
• Possible materials for the cell membrane include a shoe box, plastic jug, or plastic bag.
• Cell models, diagrams, and/or charts

Advance Preparation Allow ample time for students to collect their own model materials and to add other materials as needed. Plan ahead for storage of completed cell models.

Estimated Time One class period

Interdisciplinary Connection

Art Invite the art teacher to help students select and collect materials for their models. Completed models can be displayed in the art class or in the art display area for the school.

Prerequisites and Background

Students need to be familiar with eukaryotic cell parts and their functions.

### IMPLEMENT

Steps 1-5 This activity can be assigned as an individual project to be completed at home or as a class activity for groups or individual students. Make sure students get your approval of the materials they select to use in building their model cells.

Extend Activity 2-1 by having students create a board game based on the cell structures and functions.

### ASSESS

Use the designs of the cell models and the written answers on the Activity Report to assess if students can

\begin{align*}\checkmark\end{align*} design and build an accurate 3-D model of a cell.

\begin{align*}\checkmark\end{align*} identify the parts of a cell.

\begin{align*}\checkmark\end{align*} explain the function of each part of the cell model.

## Activity 2-1: Making a Cell Model – Activity Report Answer Key

• Sample answers to these questions will be provided upon request. Please send an email to teachers-requests@ck12.org to request sample answers.
1. Draw and label a picture of the cell that you are going to make.
2. List the materials that you have selected to use to make your model of the cell.
3. What is the function of each of the following parts of a cell?
1. cell membrane:
2. cytoplasm:
3. nucleus:
4. chromosomes:
5. mitochondria:
6. ribosomes:
7. endoplasmic reticulum:
8. Golgi apparatus:
4. If you were going to make another model of a cell what would you do differently? Explain why.

• Sample answers to these questions will be provided upon request. Please send an email to teachers-requests@ck12.org to request sample answers.
1. What is the primary function of the cell membrane? Describe three structural characteristics of the cell membrane.
2. What is the difference between a eukaryotic and a prokaryotic cell? Include examples of eukaryotes and prokaryotes.
3. What is the functional relationship among mitochondria, sugar, and ATP?
4. How are ribosomes, the endoplasmic reticulum, and the Golgi apparatus involved in the production and transport of proteins?

## Activity 2-1 Report: Making a Cell Model (Student Reproducible)

1. Draw and label a picture of the cell that you are going to make.

2. List the materials that you have selected to use to make your model cell.

3. What is the function of each of the following parts of a cell?

a. cell membrane

b. cytoplasm

c. nucleus

d. chromosomes

e. mitochondria

f. ribosomes

g. endoplasmic reticulum

h. Golgi apparatus

4. If you were going to make another model of a cell, what would you do differently? Explain why.

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Subjects:
6 , 7 , 8
Date Created:
Feb 23, 2012