Unit 2 ResourcesUnit 2 ResourcesThe Cell

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BIOLOGY

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Student Lab Safety Form

1

Student Name:

Date:

Lab Title:

In order to show your teacher that you understand the safety concerns of this lab, the following questions must be answered after the teacher explains the information to you. You must have your teacher initial this form before you can proceed with the lab.

1. How would you describe what you will be doing during this lab?

2. What are the safety concerns associated with this lab (as explained by your teacher)?

3. What additional safety concerns or questions do you have?

Teacher Approval Initials

Date of Approval

Adapted from Gerlovich, et al. (2004). The Total Science Safety System CD, JaKel, Inc.Used with Permission.

2

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Reproducible PagesTable of Contents

Chapter 6 Chemistry in BiologyDiagnostic Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Launch Lab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

MiniLab (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

MiniLab (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

BioLab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Real-World Biology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Enrichment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Concept Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Study Guide (English) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Study Guide (Spanish) . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Section Quick Check 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Section Quick Check 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Section Quick Check 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Section Quick Check 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Chapter Test A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Chapter Test B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Chapter Test C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Student Recording Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Name Date Class

Unit 2 CHAPTER 6 Chemistry in Biology 3

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.CHAPTER 6

Chemistry in Biology Diagnostic

TestBefore reading Chapter 6, predict answers to questions about the chapter content based on what you already know. Circle the letter of the correct answer, and then explain your reasoning.

1. Derek is watching a documentary about the scientists who worked on the Manhattan Project and who succeeded in splitting atoms. The documentary explains what makes up atoms. Which explanation is given?

A. Atoms are composed of electrical charges that are made of only energy.B. Atoms are hard, solid balls of matter that are the smallest known particles.C. Atoms are made of a hard particle called a nucleus surrounded by electrons.D. Atoms are made of three particles called electrons, neutrons, and protons.

Explain.

2. Jackies uncle is undergoing radioactive iodine treatments for thyroid cancer. The radioactive iodine used by the doctor is an isotope of the element iodine. Jackie researches the term isotope. Which definition for the term does she learn?

A. atoms of the same element with a different number of neutrons B. atoms of the same element with a different number of protons C. atoms of the same element with a negative charge D. atoms of the same element with a positive charge

Explain.

3. Abla is taking a nutrition class as an elective. She learns about the four most common organic macromolecules in human beings. About what macromolecules does she learn?

4 Chemistry in Biology CHAPTER 6 Unit 2

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LaunchLabYour bodys structure and function depends on chemical elements. The chemical ingredients that your body needs to function properly are found in nutrients like fats, protein, carbohydrates, minerals, vitamins, and water. In this lab, you will investigate those nutrients.

Analysis 1. Evaluate What factors influenced your predictions of the nutrient content of the

food items? Were your predictions correct? Explain.

2. Infer Which food item has the greatest nutritional value per serving? Justify your answer.

Procedure 1. Read and complete the lab safety form. 2. Construct a data chart to record grams or

percent of each nutrient listed in the lab intro-duction. Include columns labeled Serving Size, Calories, and Calories from Fat.

3. Study the Nutrition Facts label on a cereal box. Record data for the cereal provided.

4. Choose three additional labeled food items. Predict how the nutrients in these items com-pare with the nutrients in the cereal. Use the Nutrition Facts label to record data for each item.

CHAPTER 6

How does the nutrient content of foods compare?

Data and Observations

Unit 2 CHAPTER 6 Chemistry in Biology 5

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MiniLabWhat common foods contain glucose? Glucose is a simple sugar that provides energy for cells. In this lab, you will use a reagent called Benedicts solution, which indicates the presence of CHO (carbon, hydrogen, oxygen) groups. A color change determines the presence of glucose and other simple sugars in common foods.

Analysis 1. Interpret Data Did any of the foods contain simple sugars? Explain.

2. Think Critically Could a food labeled sugar free test positive using Benedicts solution as an indicator? Explain.

Procedure

1. Read and complete the lab safety form. 2. Create a data table with columns labeled Food

Substance, Sugar Prediction, Observations, and Results.

3. Choose four food substances from those pro-vided. Read the food labels and predict the pres-ence of simple sugar in each food. Record your prediction.

4. Prepare a hot water bath using a hot plate and 1000-mL beaker.

5. Label four test tubes. Obtain a graduated cylin-der. Add 10 mL of a different food substance to each test tube. Then add 10 mL distilled water. Swirl gently to mix.

6. Add 5 mL of Benedicts solution to each tube. Use a clean stirring rod to mix the contents.

7. Using test tube holders, warm the test tubes in the hot water bath for 23 min. Record your observations and results.

CHAPTER 6

Test for Simple Sugars

Data and Observations

6 Chemistry in Biology CHAPTER 6 Unit 2

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