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- 1. Multiple Choice
Flowering plants are complex organisms composed of various structures that work together to perform specific functions. What type of structure is formed by a group of similar cells that work together to perform a specific function?
a tissue
an organ system
an organism
an organ
- 2. Multiple Choice
The skeletal system is the body system that is involved in movement and protection
of internal organs. The illustration shows the skeletal system of humans.
What are the different organs that make up the skeletal system?
skeletal muscles and smooth muscles
cells, tissues, organs, organs that work together
bones, cartilage, tendons, and ligaments
the individual bones
- 3. Multiple Choice
The digestive system of an earthworm consists of specialized structures such as the crop and the intestine. What level of organization best describes each of these structures?
an organ system
an organ
a tissue
a cell
- 4. Multiple Choice
Study the structure below. Suppose that thousands of these structures work together to carry out a life function.
What object is made up of many structures in the diagram above the working together?
a molecule
a tissue
a cell
an organ
- 5. Multiple Choice
The skin is the largest organ in the human body. It protects the network of muscles, bones, nerves, blood vessels, and everything else inside the body. What can you conclude about the type of structure the skin represents?
the skin is made up of different tissues
the skin works independently of other body systems
the skin is not an organ
the skin is not made of cells
- 6. Multiple Choice
Different types of living things have different levels of organization. What represents the highest level of organization in any living thing?
a cell
an organism
an organ
a tissue
- 7. Multiple Choice
Patterns can be observed in the hierarchical organization of organisms. The illustration below shows some of these patterns.
What can you conclude from this illustration about the organization of an animal's body?
Cells work independently in the body.
Organ systems are not specialized.
Organ systems work together in the body.
There are a fewer number of organs than cells in the body.
- 8. Multiple Choice
Which series lists the hierarchy of life from largest to smallest?
tissue, organ system, molecule, cell
organism, organ system, organ, tissue
molecule, tissue, cell, organ
molecule, cell, tissue, organ system
- 9. Multiple Choice
Which of the following is made of tissues and is part of an organ system?
a carbon atom
a water molecule
a heart
a muscle cell
- 10. Multiple Choice
The tissues of vascular plants are organized into more complex structures that carry out a variety of functions in the plant. What structure is formed by a group of tissues that work together to carry out a specific function?
organ system
cell
organism
organ
- 11. Multiple Choice
The illustration below shows one of the human body systems.
What is the function of this system?
transports substances to all cells of the body
provides nutrients to the body
prevents infections from spreading through the body
eliminates wastes from the body
- 12. Multiple Choice
The body absorbs nutrients through the small intestines. The blood transports these nutrients to every cell in the body. The blood also carries oxygen to every cell. The cells use the nutrients and oxygen to supply the energy the body needs. What three body systems are working together in this situation?
digestive, circulatory, and excretory systems
nervous, digestive, and circulatory systems
respiratory, circulatory, and digestive systems
circulatory, immune, and respiratory systems
- 13. Multiple Choice
The illustration shows one of the body systems.
What is one function that this body system performs?
transports substances throughout the body
obtain nutrients
eliminate carbon dioxide gas
protect the body from disease
- 14. Multiple Choice
The kidneys are part of the excretory system that eliminates wastes in order to maintain homeostasis. Which substance is a waste product eliminated by the excretory system?
oxygen
sugars
urine
plasma
- 15. Multiple Choice
Body cells need oxygen to release the stored energy in food. Which system transports oxygen to cells in the body?
digestive system
circulatory system
nervous system
respiratory system
- 16. Multiple Choice
While standing in line at the movie theater, someone coughs on Tara. Which of her body systems will fight the infection she may have been exposed to?
immune system
digestive system
respiratory system
excretory system
- 17. Multiple Choice
The bladder, kidneys, lungs, and skin are organs that work together to maintain homeostasis. What is the function of these organs?
eliminate waste products
protecting against disease
digesting food
exchanging gases
- 18. Multiple Choice
The illustration shows a cell that is important in regulating the body’s responses to changes in the internal and external environment.
To which body system does this cell belong?
reproductive system
musculoskeletal system
excretory system
nervous system
- 19. Multiple Choice
The major systems of the human body interact with each other to maintain homeostasis. Which of the following BEST describes how the circulatory and immune system work together?
The circulatory system returns oxygen-poor blood back to the lungs, where the immune system adds oxygen, making it oxygen-rich.
The circulatory system influences the body’s growth and metabolism, allowing the immune system to destroy foreign pathogens.
The immune system produces voluntary and involuntary responses in the body, while the circulatory system produces red blood cells to fight infections.
White blood cells that fight infections are transported throughout the body by the circulatory system.
- 20. Multiple Choice
A bright light shines into Aubree's eyes. Which organ system will the nervous system alert in order to allow less light into her eyes?
musculoskeletal
immune
circulatory
respiratory
- 21. Multiple Choice
Aubrey touches a hot surface and immediately pulls her hand back. Which organ system did the nervous system alert?
immune
respiratory
circulatory
musculoskeletal
- 22. Multiple Choice
Which of the following is an accurate statement about scientific knowledge?
Scientific knowledge results only from hypotheses and predictions that have been proven true.
Only knowledge that has been proven by experiments is accepted as scientific knowledge.
Scientific knowledge can result from a single experiment that supports a hypothesis.
Scientific knowledge is not proven, but is supported by repeated experiments and observations.
- 23. Multiple Choice
Which of the following statements about using controlled experiments to test hypotheses is valid?
Hypotheses are only important when they are supported by experimental data.
All hypotheses, whether supported by experiments or not, can be valuable.
Experiments are only informative if they yield data that support hypotheses.
Experimental methods are the only factor that will affect the support of a hypothesis.
- 24. Multiple Choice
During a long run, Hudson's skeletal muscles need extra oxygen. Which of the following organ systems will able to meet this need MOST rapidly?
digestive
excretory
immune
circulatory
- 25. Multiple Choice
Organ systems work together to meet the needs of the human body. How is the skeletal system related to the nervous system?
The brain determines how the skeleton develops.
The skeletal system controls the nervous system.
The brain and spinal cord hold the skeleton together.
The skeleton protects the brain and spinal cord.
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