MC	7^th Grade Integrated Science	Standard: 03
Objective: 02. Identify and describe the function and interdependence of various organs and tissues.
ILO:

Which of the following is the most complex level of organization in living things?

a. cell

b. organ

c. organ system

d. organism

e. tissue

Correct Answer: d

MC	7^th Grade Integrated Science	Standard: 03
Objective: 02. Identify and describe the function and interdependence of various organs and tissues.
ILO:

Which letter correctly identifies the 5 levels of cell organization from most complex to simplest?

a. tissue, organs, organ systems, cell, organism

b. organism, organ system, organ, tissue, cell

c. organ system, cell, tissue, organ, organism

d. cell, tissue, organ, organ system, organism

Correct Answer: b

MC	7^th Grade Integrated Science	Standard: 03
Objective: 02. Identify and describe the function and interdependence of various organs and tissues.
ILO:

Which of the following is an example of an organism?

a. a mouse

b. a skull bone

c. a nerve cell

d. skin

Correct Answer: a

MC	7^th Grade Integrated Science	Standard: 03
Objective: 02. Identify and describe the function and interdependence of various organs and tissues.
ILO:

Which of the following is an example of an organ?

a. large intestine

b. inner lining of the stomach

c. digestive system

d. muscle fiber

Correct Answer: a

MC	7^th Grade Integrated Science	Standard: 03
Objective: 02. Identify and describe the function and interdependence of various organs and tissues.
ILO:

Which letter correctly identifies the 5 levels of organization from simplest to the most complex?

a. person, muscle cell, heart, circulatory system, cardiac muscle tissue

b. person, circulatory system, heart, cardiac muscle tissue, muscle cell

c. muscle cell, heart, cardiac muscle tissue, circulatory system, person

d. muscle cell, cardiac muscle tissue, heart, circulatory system, person

Correct Answer: d

MC	7^th Grade Integrated Science	Standard: 03
Objective: 02. Identify and describe the function and interdependence of various organs and tissues.
ILO:

Match each structure with the correct level of organization. (Letters may be used more than once, or not at all.)

____1. Heart a. Cell

____2. Paramecium b. Tissue

____3. Dog c. Organ

____4. Digestive Organs d. Organ System

____5. Stomach e. Organism

____6. Muscle

____7. Circulatory Organs

Correct Answers:

1. c

2. e

3. e

4. d

5. c

6. b

7. d

MC	7^th Grade Integrated Science	Standard: 03
Objective: 02. Identify and describe the function and interdependence of various organs and tissues.
ILO:

The epidermis and dermis make up the two main layers of the skin. Skin is an example of which level of organization?

a. cell

b. tissue

c. organ

d. system

Correct Answer: c

MC	7^th Grade Integrated Science	Standard: 03
Objective: 02. Identify and describe the function and interdependence of various organs and tissues.
ILO:

Saliva contains an enzyme that breaks down sugar into chemicals beginning as soon as you put it into your mouth. If a person did not produce saliva, which would most be affected?

Most directly affected would be their ____________.

a. blood cells

b. digestive system

c. liver

d. nervous system

Correct Answer: b

I	7^th Grade Integrated Science	Standard: 03
Objective: 02. Identify and describe the function and interdependence of various organs and tissues.
ILO:

Read the story "A New Idea" and answer the questions. The students may read the story individually, or the teacher may read the story to the class as a whole.

A New Idea

Long ago in the country of “Everyone Does Everything For Themselves,” there lived a family whose name was “We Are Tired At The End Of Everyday.” Little Whiny “We Are Tired At The End Of Everyday” often asked her mother, Busy, when it was time to play. “Oh there is never time to play," said her mother, "Your brother is always making new shoes for all of us when he is not shearing the sheep to spin it into wool for our clothes. And your father is digging a new well for our water, so he is terribly behind in preserving all of the food from our fields. Of course, when I am not assembling the metal from our mine into a car, I always have more seeds to plant.” Little Whiny, too, had many jobs--too many. Occasionally she stopped feeding the logs (that she had chopped herself) into the furnace and looked across the street at the "We have the best clothes's" house. They had a little girl about her age and she was always dressed in the prettiest dresses. In their family, the older sister, Specialist, made the clothes, and they always looked much better than the ones that Whiny's brother made. One day Whiny had a great idea. What if the "We have the best clothes's" made the clothes for both of the families, and then her brother could do all of the shearing of the sheep and weaving of the wool. She ran and told the idea to her mother. Her mother was interested, but she was so used to the way that things had always been, that she was slow to accept the idea. However, Whiny was anxious to have a pretty dress. She talked to her brother and to Specialist and both of them thought it would be great to each do only one or two jobs instead of so many. Pretty soon the rest of the two families thought that they might also like to share some of their jobs. They went to everyone else in the town and found out what each family liked to do best. Once they had made a list, they gave every family a specific job, and everyone shared the products that they made. Pretty soon there was some spare time for everyone. People were much happier, especially Whiny, who finally got to play.

a. Which level of organization could the families in the beginning of this story be compared to and why?

b. Using your answer in #1, what could the people in the families be compared to at the beginning of this story and why?

c. At the end of the story, which level of organization could the country be compared to and why?

d. What would be a good name for the country after things had changed?

e. At the end of the story, which level of organization could the families be compared to and why?

Correct Answers:

a. The families could be compared to cells because they are separate from others and they do everything that they need for survival by themselves.

b. The people in the families could be compared to cell organelles. Each family member has specific jobs in order to help the family function, just as organelles have specific jobs to help cells function.

c. The country could be compared to an organism. All of its members have specialized functions that benefit the other members, so that each does not have to perform every function alone.

d. Student choice.

e. The families could be compared to organs. Each family specializes in performing one function that benefits the entire country.

I	7^th Grade Integrated Science	Standard: 03
Objective: 02. Identify and describe the function and interdependence of various organs and tissues.
ILO:

Read the following scenario and then identify 3 instances that happened throughout the story that show how science affects everyday life.

John is a middle school student who quickly at lunch so he could go out and lay games on his new palm pilot. He gulped down a hamburger, french fries, and a can of pop. Soon after, he felt his stomach cramping and begin to hurt. His friend gave his some Tums and it soon felt better. Later, during P.E., he fell and scrapped his knee. The school nurse puts on an antibiotic cream and a band-aid and sends John back to class. John eventually reaches the drinking fountain and pauses for a long refreshing gulp from the cooled water.

Possible Answers:

palm pilot

using Tums

refrigerated drinking fountain

scrapped knee

antibiotic cream

band-aid

canned pop

E	7^th Grade Integrated Science	Standard: 03
Objective: 02. Identify and describe the function and interdependence of various organs and tissues.
ILO:

What is the difference between tissue and an organ?

Correct Answer: Tissue is a group of cells that perform a common function. An organ is a structure comprised of more than one kind of tissue and is specialized for performing a particular function.

E	7^th Grade Integrated Science	Standard: 03
Objective: 02. Identify and describe the function and interdependence of various organs and tissues.
ILO:

What is the difference between an organ and an organ system?

Correct Answer: An organ is a structure comprised of more than one kind of tissue and specialized for performing a function. An organ system is a group of organs that work together for a common vital body function.

E	7^th Grade Integrated Science	Standard: 03
Objective: 02. Identify and describe the function and interdependence of various organs and tissues.
ILO:

Compare the levels of organization of living things (e.g. cells, tissues, organ systems, organisms) to the material needed to build a skyscraper and explain how they are alike.

Ideal Answer:(may vary)

Answer must include all 5 levels with an example from a building.

(ex. cells - bricks, tissues - wall of bricks, organ - elevator, system - elevator system, organism - building) Must also explain why the comparison part is like the level of organization.

E	7^th Grade Integrated Science	Standard: 03
Objective: 02. Identify and describe the function and interdependence of various organs and tissues.
ILO:

Nerve cells and muscle cells function differently but in multicellular organisms both are required for movement. Explain the function of each cell and explain how they work together for the benefit of the organism.

Ideal Answer:

nerve cells - communicate information to and from the brain to other parts of the body

muscle cells - allow the body to move and work

Together they help the body function - nerves send messages from the brain to the muscles to contract. This enables the organism to lift, run, write, dance, etc. The muscles respond to the nerve impulse to accomplish the task.

E	7^th Grade Integrated Science	Standard: 03
Objective: 02. Identify and describe the function and interdependence of various organs and tissues.
ILO:

1. What are the major organs in the digestive system? (You may use your book or other resources.)

2. What are those organs made up of? (Remember the level or organization before them.)

3. What is the answer to (2.) made up of?

Correct Answers:

1. Depending on the source used, students may have items from the following list: tongue, salivary glands, esophagus, stomach, small intestines, large intestines, liver, gall bladder, pancreas and rectum.

2. Tissues (may list some types of tissues such as muscle, connective, or epithelial (lining) tissue).

3. Many cells

E	7^th Grade Integrated Science	Standard: 03
Objective: 02. Identify and describe the function and interdependence of various organs and tissues.
ILO:

The lymphatic system is sometimes compared to the circulatory system. However, the lymphatic system has no pump, like the heart, to keep lymph circulating through the body. In addition, the circulatory system is a continuous system-- the lymphatic system is not. In the circulatory system, arteries leave the heart and connect to smaller and smaller arteries that connect to capillaries. The capillaries connect to larger and larger veins. The larger veins return back to the heart, where the circuit is complete. In the lymphatic system, although lymph capillaries lead to larger lymph vessels, the lymph capillaries begin "blindly" in the tissues. The lymph vessels do not go in a complete circuit through the body.

Compared to the circulatory system, do you think that the lymph system is well adapted to carrying material through the body? Explain your answer.

Ideal Answer:

Students may respond that valves in the lymphatic system prevent the backward flow of materials. They may also know that lymph vessels contract rhythmically. These contractions, along with contractions of the body muscles, propel lymph through the body.