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Need help with this homework non majors biology bio 1100 Due may-(Answered)

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Need help with this homework non majors biology bio 1100

Due may 2, 2016 @ 8:30 pm


Unit II Homework

 

Cancer and Genetics

 

Introduction

 

In order for organisms to grow, repair, maintain, and reproduce, cells undergo cell division. Sometimes,

 

cells uncontrollably divide, resulting in cancer. In the first part of the Cancer and Cell Division Lab, you will

 

learn about normal cell division and will compare it to cell division that occurs in cancer cells. You will then

 

visit a website to find out more information about cancer. You will learn why it occurs, why it kills, and new

 

treatments that are being tested and used to treat cancer.

 

Objectives

 

1. Explain the process of cancer, the effects on the human body, the various types, and the risk

 

factors involved.

 

2. Explain various treatments for cancer.

 

3. Explain the various stages of mitosis.

 

Materials

 

No extra materials will be required to complete this lab other than internet service.

 

Directions

 


 


 


 


 


 


 

Go to the following website: http://www.mhhe.com/biosci/genbio/virtual_labs/BL_23/BL_23.html

 

Follow the steps under the PROCEDURE section.

 

Type all answers directly on the data sheet.

 

Select Save As, and save this document using your last name and student ID as the file name.

 

Upload the data sheet as a .doc, .docx, or .rtf file when you are finished.

 


 

While viewing the video, answer the following questions. Total: 8 points

 

1. In which stage of cell division is the DNA copied? (4 points)

 


 

2. During which stage of mitosis do the chromosomes line up in the middle? (4 points)

 


 

After viewing the video, click on the Information tab in the bottom right corner. Answer the following

 

questions. Total: 12 points

 

1. In which of the cancer types listed, are males not at risk of developing? (4 points)

 


 

2. Cigarette smoke is a major risk factor for which type of cancer listed? (4 points)

 


 

1

 


 

3. The risk for which type of cancer increases after the age of 55? (4 points)

 


 

Continue following the directions under the PROCEDURE section, and complete the following table. Total:

 

40 points

 

Interphase

 


 

Prophase

 


 

Metaphase

 


 

Anaphase

 


 

Telophase

 


 

% of Cells

 

Dividing

 


 

% of Cells

 

at rest

 


 

Normal

 

Lungs

 

Cancerous

 

Lungs

 

Normal

 

Stomach

 

Cancerous

 

Stomach

 

Normal

 

Ovary

 

Cancerous

 

Ovary

 

Continue following the directions under the PROCEDURES section and answer the following questions.

 

Total: 12 points

 

1. Based on your data and observations, what are some of the differences between normal cells

 

and cancer cells? (4 points)

 


 

2. Which type of cancer shows the most aggressive growth? Explain your answer. (4 points)

 


 

3. When studying cell division in tissue samples, scientists often calculate a mitotic index, which is

 

the ratio of dividing cells to the total number of cells in the sample. Scientists often calculate the

 

mitotic index to compare the growth rates of different types of tissue. Which type of tissue would

 

have a higher mitotic index, normal tissue or cancerous tissue? Explain. (4 points)

 


 

Go to: http://www.cancer.org/

 

Click on LEARN ABOUT CANCER. View each section contained in the menu under ?Learn About Cancer

 

Topics,? and answer the following questions. Total: 28 points

 


 

2

 


 

1. How many people in the US get cancer each year? (4 points)

 


 

2. What causes cancer? (4 points)

 


 

3. Since there are many different types of cancer, how is cancer named? (4 points)

 


 

4. List two signs or symptoms of breast cancer. (4 points)

 


 

5. Can males development breast cancer? (4 points)

 


 

6. What is the most common type of cancer? (4 points)

 


 

7. List two ways you could get involved and help fight against cancer. (4 points)

 


 

3

 


 

 

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