**READ ENTIRE POST BEFORE BIDDING***

Attached to the post will be 5 “Biology Lab Assignments.” You MUST conduct the small experiments and make sure all results/answers are noted. You will use the results and prior knowledge to complete each worksheet.

**REQUIREMENTS:                                        1.Must be typed directly into Microsoft Word Document 

2. Times New Roman (12 Font)

3. ABSOLUTELY NO PLAGIARISM !!

4. Make sure you answer every question & fill every result that the worksheets asks for

5 If you have to print out the worksheet , Make sure your handwriting is legible (scan it and upload it as a pdf when complete)

6. Due: March 31, 2021 @8 a.m ET , NO EXCEPTIONS***

on time

Lab

3

Identification of Carbohydrates, Proteins, and Lipids Assignment

Results

1. While looking at the pictures for the results of each test, fill in the chart below (

+/-

means was the

color

positive or negative):

color

+/-

color

+/-

+/-

No.

Substance

Benedict Test

Iodine Test

Biuret Test

Sudan Dye

color

+/-

1

water (control)

2

10 % glucose

3

10 % sucrose

4

10 % starch

5

10 % albumin

6

salad oil

7

milk

8

regular soda

9

unknown

2. Fill in the table below for the results of the Benedict Test (look at the color for each test tube and then match up the color in the table found on page 7):

No.

Substance

Gm %

1

water (control)

2

10 % glucose

3

10 % sucrose

4

10 % starch

5

10 % albumin

6

salad oil

7

milk

8

regular soda

9

unknown

Answer questions with complete sentences.

3. A clear regular (non-diet) soda was tested. How much reducing sugar was present in the sample? Is the reason it is sweet because it contains reducing sugars? How do you know this?

4. Did the milk you tested contain protein? How do you know this? If it contained protein can you determine how much? Why or why not?

5. Do you think the Sudan Dye Test is a quantitative or qualitative test? Why or why not?

6. What is an indicator substance? Give an example.

7. Which tests gave you a positive result when you tested your unknown? What does this tell you?

8. Outline the functions of the polysaccharides in the table below.

Polysaccharide		Function
Glycogen
Chitin
Cellulose
Starch

9. Outline the functions of the proteins in the table below:

Function

Protein

Hemoglobin

Keratin

Myoglobin

Fibrin

Serum albumin

Insulin

Calmodulin

Immunoglobins

Cytochromes

Vasopressin

Pepsin

Ferritin

10.

Outline the functions of the lipids in the table below:

Lipid

Function

Lecithin

Prostaglandins

Cholesterol

Estrogen

Carotene

11. Which groups of organic molecules would you expect to find in the following:

a. corn oil –

b. silk –

c. rubber –

d. soap –

e. molasses –

Lab 3
I
dentification of
C
arbohydrates
, P
roteins
,
and
L
ipids

Assignment

Results

1.

While looking at the
pictures for the
results of each test, fill in the chart below

(+/
–

means
was the color positive or negative)
:

No.

Substance

Benedict
Test

Iodine Test

Biuret
Test

Sudan
Dye

color

+/
–

color

+/
–

color

+/
–

+/
–

1

water (control)

2

10 %
glucose

3

10 % sucrose

4

10 % starch

5

10 % albumin

6

salad oil

7

milk

8

regular soda

9

unknown

2.

Fill
in

the table below for the results of the
B
enedict
T
est

(look at the color for each test tube
and
then match up the color in the table found on page 7)
:

No.

Substance

Gm %

1

water (control)

2

10 % glucose

3

10 % sucrose

4

10 % starch

5

10 % albumin

6

salad oil

7

milk

8

regular soda

9

unknown

Answer questions with complete sentences.

3.

A

clear regular (non
–
diet) soda

was tested
. How much reducing sugar was present in
the

sample? Is the reason it is sweet because it contains reducing sugars? How do you know
this?

Lab 3 Identification of Carbohydrates, Proteins, and Lipids Assignment

Results

1. While looking at the pictures for the results of each test, fill in the chart below (+/- means
was the color positive or negative):

No.

Substance
Benedict
Test
Iodine Test Biuret
Test
Sudan
Dye
color +/- color +/- color +/- +/-
1 water (control)
2 10 % glucose
3 10 % sucrose
4 10 % starch
5 10 % albumin
6 salad oil
7 milk
8 regular soda
9 unknown

2. Fill in the table below for the results of the Benedict Test (look at the color for each test tube
and then match up the color in the table found on page 7):

No. Substance Gm %
1 water (control)
2 10 % glucose
3 10 % sucrose
4 10 % starch
5 10 % albumin
6 salad oil
7 milk
8 regular soda
9 unknown

Answer questions with complete sentences.

3. A clear regular (non-diet) soda was tested. How much reducing sugar was present in the
sample? Is the reason it is sweet because it contains reducing sugars? How do you know
this?

Microscopic Examination of Cells

After reading the information, viewing the videos and completing the cell games complete the assignment below. Make sure to use complete sentences.

1.

Define field of view and describe how you can measure the diameter.

2.

Describe how to determine the total magnification.

3.

Predict which magnification should be used to observe:

a.

Cheek Cells –

b.

Onion Cells –

c.

Bacteria –

4.

In your own words, explain how you calculate the size of a real object as seen in the field of view.

5.

Describe four differences between prokaryotic and eukaryotic cells.

a.
b.
c.

d.

6.

Name three differences between plant and animal cells.

a.
b.
c.

7.

State three postulates of the cell theory.

a.
b.
c.

8.

Name three structures common to all cells.

a.
b.
c.

9.

Do all living plant cells contain chloroplasts?

10.

In your own words summarize the process for preparing a wet mount slide for cheek epithelial cells.

11.

In your own words summarize the process for preparing a wet mount slide for onion cells.

12.

In your own words summarize the process for Gram staining:

13.

Describe how gram-positive and gram-negative bacteria appear under a microscope after the gram staining process.

For questions 14, 15, and 16 neatly draw the cells on a separate piece of paper. Make sure you draw the different parts of the cell at the appropriate size (a ribosome should not be larger than the nucleus, etc.) Use colors and be creative. Take a picture with your phone, convert to a pdf, and upload along with your completed assignment.

14.

Draw your own animal cell and label the organelles/parts of the cell

15. Draw your own plant cell and label the organelles/parts of the cell

16. Draw your own prokaryotic cell and label the organelles/parts of the cell

17. Describe the function of the the following:

a.

Cell Membrane-

b. Nucleus-

c. Mitochondria-

d. Endoplasmic Reticulum-

e. Golgi Apparatus-

f. Ribosomes-

g. Chloroplast-

18. Examine the microscope diagram shown below. Label the components.

1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.

1.
2.
3.
4.
5.
6.
7.
8.
14.
13.
12.
9.
10.
11.

Lab

5

Blood Groups and Classical Genetics

After reading the information, viewing the videos complete the assignment below. Make sure to use complete sentences.

1

. Define the terms below. Do not cut and paste! Use your own words so that you will understand better.

a. Gene:

b. Allele:

c. Genotype:

d. Phenotype:

e. Dominant:

f. Recessive:

g. Homozygous:

h. Heterozygous:

2

. Complete the following table.

Genotype	Phenotype	Homozygous or Heterozygous
IAIA
IBIB
IAIB
IOIO
IBIO
IAIO

3

. Complete the table below by checking which trait you have.

(Refer to ‘Page

4

Observation of Your Own Genetic Inheritance’)

Dominant Trait	Recessive Trait
1	Able to roll tongue	Not able to roll tongue
2	Free ear lobe	Attached ear lobes
3	Widow’s peak hairline	Straight hairline
4	Straight thumb	Curved thumb
5	Mid-digit hair present	Mid-digit hair absent
6	Left thumb over right	Right thumb over left

4. Out of the six genetic inheritance traits, how many are dominant for you? How many are recessive?

Dominant: _______

Recessive: _______

5. Using a Punnett square, determine the possible genotypes, phenotypes, and ratios of offspring for the following individuals: Show your work!

Pete: blood type O

Jennifer: blood type AB

Possible genotypes of offspring:

_________________________________

Genotypic Ratio: __________________

Possible phenotypes of offspring: _________________________________

Phenotypic Ratio: __________________

6. Using a Punnett square, determine the possible genotypes, phenotypes, and ratios of offspring for the following individuals: Show your work!

John: blood type A (heterozygous)

Linda: blood type B (heterozygous)

Possible genotypes of offspring: _________________________________
Genotypic Ratio: __________________
Possible phenotypes of offspring: _________________________________
Phenotypic Ratio: __________________

7. Using a Punnett square, determine the possible genotypes, phenotypes, and ratios of offspring for the following individuals: Show your work!

Michael: Brown eyes (homozygous)

Karen: Brown eyes (heterozygous)

Possible genotypes of offspring: _________________________________
Genotypic Ratio: __________________
Possible phenotypes of offspring: _________________________________
Phenotypic Ratio: __________________

8. Using a Punnett square, determine the possible genotypes, phenotypes, and ratios of offspring for the following individuals: Show your work!

Donovan: Brown eyes (homozygous)

Shay: blue eyes

Possible genotypes of offspring: _________________________________
Genotypic Ratio: __________________
Possible phenotypes of offspring: _________________________________
Phenotypic Ratio: __________________

Lab

6 Introduction to Chemical Control Assignment

After reading the information and watching the videos on Diabetes complete the following questions. Remember to use complete sentences where necessary.

1. Discuss how Type 1 Diabetes and Type 2 Diabetes are similar and how they are different (3-4 sentences). DO NOT cut and paste – use your own words.

2. According to the video Diabetes and the body what are some of the symptoms of diabetes?

3. What organ produces insulin?

4. Is there an optimal level of glucose in the body? If there is, what is the range?

In today’s exercise, we will investigate the relationship between the pancreas, insulin and carbohydrates. We will investigate the change in blood sugar levels associated with the ingestion of a candy bar. In addition, other experimental data is given for your review and hopefully will provide you with insight and understanding of blood sugar values.

a. Using the graph below, determine the subjects’ pretest (0 hour) blood glucose values and record them in the chart which you will find after the graph.

b. The subjects have been given large candy bars which were ingested quickly (less than 2 minutes).

c. The subjects’ blood glucose levels were tested again at 1, 2, 3, 4, 5, and 6 hours after they ate their candy bars. Record each subjects’ numbers.

d. Complete the related questions following the chart to aid in your understanding of the exercise.

1. Fill in the chart by looking at the graph above:

Time (hrs)

LaTonya

Susan

Derrick

Aisha

Michael

0

1

2

3

4

5

6

2. Explain their results. Which ones are normal, hypoglycemic, mildly diabetic, severely diabetic, or other?

3. Which of the above individuals exhibit levels above normal?

4. Which of the above individuals exhibit levels below normal?

5. Were all the pre-ingestion results normal? Who, if anyone, was not normal and why?

6. Did each person’s blood sugar rise immediately after they ate the candy? Explain what we saw happen.

7. Had each person’s level begun to drop by the end of the exercise? Why or why not?

8. Were all the student subject responses within normal parameters? Why or why not?

9. Complete the following chart:

Hormone

Production Site

Effects

Adrenalin (Epinephrine)

Glucagon

Glucocorticoids

Insulin

Somatotrophic Hormone

Thyroxin

10. What do the hormones in the above chart have in common?

11. Prepare a short story (1-2 paragraphs) which will outline the relationship of the following: aerobic respiration, blood, food, glucocorticoids, glucose, glycogen, homeostasis, hormone, liver, pancreas, small intestine. Make sure to use all 11 words and underline each one. Use your own words for this story.

Unit 2

Assignment: Scientific Method

Make sure you use complete sentences.

1. After watching ‘The Scientific Method’ video, list the six key steps in The Scientific Method and discuss each step.

2. After watching the video ‘Creating Graphs in Science’, list the steps in creating a graph. Also, discuss why the dependent variable is located on the y-axis and the independent variable is on the x-axis.

3. After watching the video ‘How to Formulate a Hypothesis’, what are the two key components of a hypothesis? 

4. After going through the tutorial for the ‘Scientific Method’ online activity start the cricket experiment.

a. Define the problem:

b. Formulate your own hypothesis by using the ‘if’ and ‘then’ statement as you learned in the video ‘How to Formulate a Hypothesis’.

5. Results:

																Data Table A: Effect of Temperature on Cricket Chirps
Temperature                                       (oC)	Cricket Chirp Rate                   (chirps/minute)
25	148

Data Table B: Effect of Atmospheric Pressure on Cricket Chirps
Atmospheric Pressure                  (mm Hg)	Cricket Chirp Rate                             (chirps/minute)
760			148

                            148

Data Table C: Effect of Humidity on Cricket Chirps
Humidity                   (%)	Cricket Chirp Rate                  (chirps/minute)
15

                        148

Data Table D: Effect of Wind Speed on Cricket Chirps
Wind Speed                  (m/sec)	Cricket Chirp Rate                    (chirps/minute)
2

6. After conducting your experiments look back on your original hypothesis. Was it correct? If it was correct then you can accept your hypothesis. If it was not correct you can reject your hypothesis. Which will you do?

7. Graphing: Insert your graph(s) of the variable(s) that actually affect the cricket’s chirping.

8. Conclusion: 

(1-2 sentence testable statement about which variables affect cricket chirps)