Iki indicator 1 ml 2.1 in glass vial

Biology 1 Lab

BIOLOGY LAB 1 (ONLINE)

2- PART ASSIGNMENT

PART 1: LAB REPORT:

Format- NONE

Word Count- 15-50

Photos: 2-4 Uploads

Instructions: Complete Sections 2, 3, & 5 Exercises, Experiments, Equations, Explanation and/or Demostartions

Chapter: (Open Attachment Below)

Due: MONDAY 1/27/14 @12:00p.m. (EST) USA

PART 2: ONLINE QUIZ:

Time: 30 MINS

Style: Multiple Choice, 10-Questions

Instructions: Link will be provided with user name and instruction (after agreement handshake)

Due: TUESDAY 1/28/14 @12:00 p.m. (EST) USA

NOTE: IF WORK IS SUPERB (A++), COMMUNICATION STAYS OPEN, YOU'RE AVAILABLE, RELIABLE AND FOLLOW OUTLINE OF ASSIGNMENT WITHOUT MISSING INFORMATION, I WILL HAVE 12- MORE WKS OF SIMILAR POSTED ASSIGNMENTS FOR THE SAME PERSON. IF YOUR END IS NOT HELD-UP, I WILL WORK WITH OTHERS. I CANNOT AFFORD TO GET BELOW A 85% (A-B)+ PASSING GRAGE. IF YOU ARE STILL INTERESTED, COMFORTABLE WITH TASK, PLEASE LET ME KNOW. THIS HOMEWORK WILL BE RAISED SLIGHTLY HIGHER THAN THE REMAINING HOMEWORKS THAT WILL FOLLOW IN WEEKS TO COME, ONLY BECAUSE ITS DUE IN 2-3 DAYS. I PREFER A PERSON WITH A SCIENCE (AND/OR) MATH MAJORS.

Chemical Basis of Life – Part I - Carbohydrates

Hands-on labs, inc. Version 42-0144-00-01

LAB REPORT

PHOTOS – Include two digital photos with your lab report, either as separate attachments to an e-mail or paste into your document.

1. Photo #1 – Take a photo of your finished experiment in exercise 2, testing for sugars.

(The four test tubes after heating, but while still in the pan.)

Be sure to take a view that shows the colors in all the tubes

2. Photo #2 – Take a photo of the tubes after you have added the iodine solution.

(Again, be sure that you are close enough to see the results clearly.)

3. Photo #3 – Take a photo of the tubes after testing your cereal – Benedict’s and IKI tests.

Exercise 2: Simple Sugars

Observations:

Data Table 2: Benedict’s reagent test for sugar

Test Tubes

A

B

X

Initial Color

Color After 5

Minutes

Questions:

A. What was the initial color of the Benedict’s reagent? How did this compare to the color after heating?

B. Is glucose present in the unknown solution? Explain your answer.

C. What are some medical conditions in which it is necessary to monitor glucose levels?

D. Could the procedure you conducted in this exercise be classified as a quantitative test?

Exercise 3: Complex Carbohydrates

Observations:

Data Table 3: Color change in test tubes with IKI solution

iKi test for starch

A

B

X

Initial Color

Final Color

Questions:

A. Is there starch in the unknown solution? Explain your answer.

B. Why may it be important to test for starch?

C. What types of food may be composed of starch?

Exercise 5: Testing Breakfast Cereal

Observations:

Data Table 5: Cereal testing results

Material tested

biuret reagent

Benedict’s reagent

iKi

Cereal

OMIT

dH2o

OMIT

Questions:

Name of cereral tested:

A. Which macromolecules were present in the cereal?

B. Compare your findings to the nutritional information found on the product label. Do the

results agree with the labeling? If not, what could be a source of error?