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SC235: Human Biology

Unit 4 Assignment: The Complexity of Human Organs

Name: __________________

Please address each question and submit the completed worksheet to the Unit 4 Assignment Dropbox when completed.

Part I: Hierarchy of Human Organization and Cell Theory: Review the hierarchy of human organization in the textbook and then click on the blank to type the missing word in the definition.

1. A(n) is a combination of atoms bonded together.

2. A(n) is a component or “little organ” within a cell that carries ouWt a specific function.

3. The is the smallest unit of life

4. A(n) is a group of cells that work together to serve a specific function.

5. A(n) is a group of tissues that work together to serve a specific function

6. A(n) is a group of organs working together to serve a specific function.

7. A(n) is an individual form of life composed of many cells, organs and tissues.

8. The states that a cell is the smallest unit of life; cells make up all living things, and new cells can only arise from pre-existing cells.

9. Bacterial cells are classified as prokaryotes. Human cells are animal cells and are classified as because they have a well-defined and membrane-bound organelles.

Part II: Organelles: Fill in the blank with the name of the correct organelle

1. _______________ Regulates movement of materials in and out of the cell

2. _______________ The material surrounding the nucleus

3. _______________ Digests substances brought into the cell and destroys parts of the cell

4. _______________ Provides cell with energy through the breakdown of glucose during cellular respiration

5. _______________ Contains DNA and controls cellular activity

6. _______________ Produces components of ribosomes (RNA and proteins)

7. _______________ Site where protein synthesis begins

8. _______________ Studded with ribosomes and produces membrane

9. _______________ Detoxifies drugs and produces membranes

10. _______________ Sorts, modifies and packages proteins

Part III: Tissues & Organs

1. Complete the table below by listing the four specific tissue types found within the human body and describing the major function(s) of each tissue.

1. Select one of the following organs and then address the following questions based on your selected organ.:

1. Identify at least three tissue types found within your selected organ.

   1. Tissue 1

   2. Tissue 2

   3. Tissue 3

2. List and describe at least three cell types found within your selected organ. Your description should address whether these cell types have any special structures (e.g., presence of microvilli and/or abundance of particular organelle such as mitochondria) and how they contribute to the overall function of the selected organ.

   1. Cell 1: Describe the selected cell AND how it contributes to the overall function of the selected organ.
      

1. 1. Cell 2: Describe the selected cell AND how it contributes to the overall function of the selected organ.
      

1. 1. Cell 3: Describe the selected cell AND how it contributes to the overall function of the selected organ.
      

Part IV: Importance of Cell Diversity: Consider the tissues and cells that make up your selected organ.

1. What might happen if the selected organ was made of a different tissue type?

Answer here:

1. What if it was made of only one type of cell?

Answer here:

1. Why is cell diversity important? How would homeostasis be compromised if this happened?

Answer here:

References: (Note: Please provide references to any sources you consult, including your textbook. Please review APA-formatting guidelines and ensure that your references are properly formatted. Visit our Writing Center for additional help.)

Submitting Your Assignment

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