7th Grade Human Body Levels of Organization
1 Examine the tissue below.
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A scientist studying the brain examines the above tissue under a microscope. Which statement best identifies a function of this tissue type?
A It breaks down food and processes it for use in the body.
B It conducts information from one part of the body to another.
C It moves oxygen and carbon dioxide throughout the body.
D It provides a basic framework and support system in the body.
2 The diagram below shows the levels of organization in a multicellular organism.
Which level of organization is made up of cells working together to do just one job?
A cells
B tissue
C organ systems
D organism
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7th Grade Human Body Levels of Organization
3 The diagram below shows a plant structure.
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4 The numbered drawings below show the organization within a multicellular organism from simple to complex.
Which levels of organization are included in the diagram?
A cell and organ
B cell and tissue
C organ and organism
D organ and organ system
Which of these numbered drawings represents a tissue?
A 1
B 2
C 3
D 4
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7th Grade Human Body Levels of Organization
5 An average adult male African elephant has a mass of 7,000 kilograms.
The mass of a newborn African elephant can range from 90-120 kilograms. Which change occurs as the mass of the young elephant increases?
A The elephant’s cells multiply to form tissues.
B New organ systems are added in the elephant.
C All of the elephant’s body cells increase in size.
D New organs are formed in the elephant’s organ systems.
6 Human bodies have complex structures that support growth and survival.
What is the most basic structure of the human body that supports growth and survival?
A a cell
B a tissue
C an organ
D an organ system
7 Which body structure is matched to its proper level of biological organization?
A the blood—organ
B the brain—tissue
C a liver—tissue
D a lung—organ
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7th Grade Human Body Levels of Organization
8 Several different types of cells are shown below.
Which two types of cells are most similar in shape?
A skin cells and bone cells
B nerve cells and skin cells
C bone cells and nerve cells
D muscle cells and skin cells
9 Which cell part is correctly paired with its function?
A nucleus—controls cell activities
B chloroplast—outside boundary of plant cells
C cell wall—controls what goes in and out of cells
D cell membrane—where photosynthesis takes place
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7th Grade Human Body Levels of Organization
10 Which structure surrounds and protects an animal cell?
A Nucleus
B Vacuole
C Cytoplasm
D Cell membrane
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