Seventh Grade - Cache County School District
Seventh Grade Standard 3, Objective 2
Multiple Choice
a1. Which answer correctly identifies the 5 levels of cell organization from
simplest to most complex?
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
a2. Which answer correctly identifies the 5 levels of cell organization in a dogs
body from simple to most complex?
A. bone cell, bone tissue, femur (thigh bone), skeleton, dog
B. dog, skeleton, femur, bone tissue, bone cell
C. skeleton, bone tissue, bone cell, dog, femur
D. bone tissue, bone cell, femur, skeleton, dog
Use this diagram to answer the next two questions.
a3. Overlapping circles can be used to show
relationships. In this diagram, levels of organization
within living things are shown. If each circle is
made from the smaller circles inside it, what does
circle “W” stand for?
A. organs
B. cells
C. tissues
D. organ systems
a4. What would circle “Y” be?
A. organs
B. cells
C. tissues
D. organ systems
b5. The brain is an example of which level of organization in a body?
A. cell
B. tissue
C. organ
D. organ system
E. organism
b6. A nerve is an example of which level of organization in a body?
A. cell
B. tissue
C. organ
D. organ system
E. organism
b7. The lining of the stomach is an example of which level of organization in a body?
A. cell
B. tissue
C. organ
D. organ system
E. organism
b8. A cow is an example of which level of organization in a body?
A. cell
B. tissue
C. organ
D. organ system
E. organism
c9. How do the chambers of the heart and valves between them affect the circulatory system?
A. They control the flow of blood to different parts of the body.
B. They create new blood cells than travel to body tissues.
C. They allow blood to absorb oxygen and release carbon dioxide.
D. They store the blood for the times when it is needed.
c10. The lungs are composed of tiny sacs that fill with air during breathing. How does this tissue help the lungs do their job?
A. it allows air to contact a large surface
B. it allows muscles to open and close them.
C. it allows the lung to pump the air.
D. it allows the lungs to produce more blood.
c11. Why does the stomach need to be made of muscle tissue?
A. So liquids do not pool in the intestine.
B. To give the body strength in the middle.
C. So it can churn the food and help break it down.
D. To help the heart pump blood containing food to the body.
d12. Which organ system transfers gasses into and out of the blood?
A. nervous system
B. respiratory system
C. skeletal system
D. lymphatic system
d13. Which organs collect and excrete cell wastes?
A. skin and heart
B. stomach and pancreas
C. bladder and kidneys
D. lungs and heart
d14. Which organs breakdown food for cells?
A. heart, arteries, blood
B. stomach, intestine, pancreas
C. nerve, brain, spinal cord
D. skin, pancreas, skeletal
Essay
1. What is the difference between tissue and organ?
2. Describe how the needs of cells are met by tissues and organs. Give an example.
Correct Answers:
1. D
2. A
3. D
4. C
5. C
6. A
7. B
8. E
9. A
10. C
11. D
12. B
13. C
14. B
Essay Sample Answers:
1. 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 function.
2. A cell needs gases to go in and out. The lungs and circulatory system help get gases to the cells. A cell needs food and to get rid of wastes. The digestive system provides food and the urinary system takes wastes away.
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