Medical Quiz

Living Organisms Quiz


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The table describes four different organ systems in the human body. The organs in System 3 are most likely part of the

A. immune system.

B. endocrine system.

C. respiratory system.

D. digestive system.


Which is a function of the respiratory system?

A. to provide the body with carbon dioxide, which reacts with food to produce energy

B. to provide the body with oxygen, which reacts with food to produce energy

C. to provide the cells with glucose, which is used as a source of energy

D. to provide the cells with water, which is used as a source of energy


Mitochondria are cell organelles that play a large role in energy processes within the body. Which cells are most likely to have a greater amount of mitochondria?

A. skin

B. bone

C. blood

D. muscle


Blood absorbs oxygen in the

A. heart.

B. lungs.

C. stomach.

D. muscles.


Which of these systems functions to protect and support vital organs?

A. digestive

B. skeletal

C. nervous

D. excretory


In humans, the digestion process begins in

A. the intestine, with squeezing.

B. the mouth, with chewing and saliva.

C. the stomach, with churning and acid.

D. the esophagus, with pushing towards the stomach.



A diagram of a sponge is shown.
Sponges are marine animals that pump water through their bodies to transport food, gases, and waste to and from cells. What system in mammals has the same type of function?

A. nervous

B. skeletal

C. muscular

D. circulatory


Plants have cells, tissues, organs, and systems that allow them to function as complete organisms. Which parts of a plant function as an organ?

A. leaves

B. spores

C. root hairs

D. chlorophyll molecules


The heart, blood vessels, kidneys, and bladder working together are best described as

A. a cell.

B. a tissue.

C. an organism.

D. a system.


Which body system is most responsible for the removal of waste?

A. skeletal system

B. nervous system

C. muscular system

D. excretory system


Cells need nutrients for energy. Which system is responsible for breaking down food to provide cellular energy?

A. digestive

B. excretory

C. circulatory

D. respiratory


From simplest to most complicated, how are multicellular organisms organized?

A. organ system, organ, cell, tissue

B. organ, tissue, cell, organ system

C. tissue, cell, organ system, organ

D. cell, tissue, organ, organ system


Agnes learned that the brain, spinal cord, and nerves work together. What do they combine to form?

A. a cell

B. a tissue

C. an organ

D. a system


Different systems of the human body perform different functions. Which system takes oxygen from the air to be moved by the circulatory system?

A. the respiratory system

B. the digestive system

C. the nervous system

D. the skeletal system


Miranda learned how the human body carries out life functions. Which is the MOST basic level of organization in the human body?

A. an organ

B. a system

C. a tissue

D. a cell


The structures in the bodies of many organisms have levels of organization that help the body to carry out life processes. Which list correctly shows how these levels are organized from the simplest to the most complex?

A. tissue, cell, organ, organ system

B. organ, cell, organ system, tissue

C. cell, tissue, organ, organ system

D. organ system, tissue, organ, cell


On a class field trip, Zach took a walk through the woods using his senses. Zach made observations on the different sights, smells, and sounds in the woods. What system transferred the observations from his senses to his brain?

A. nervous system

B. digestive system

C. circulatory system

D. respiratory system



Cells in the body are specialized to perform certain functions. Most cells have a certain size and shape related to their purpose in the body. The diagram shows one type of cell. Based on its shape, what is the MOST likely function of this cell?

A. to provide structure and support

B. to carry blood throughout the body

C. to provide a cover over body tissues

D. to carry impulses throughout the body


When a multicellular organism is damaged, it will repair itself as

A. it mutates.

B. the cells work together.

C. the cells move.

D. it makes its own food.


Which cells help to destroy pathogens such as bacteria that enter the human body?

A. red blood cells

B. liver cells

C. white blood cells

D. brain cells


Blood is a fluid made up of several different parts. What level of structural organization BEST describes blood?

A. a cell

B. a tissue

C. an organ

D. a system


Which statement describes the organization of living organisms?

A. All organisms are composed of many cells, which are the basic units of structure but do not perform life functions.

B. All organisms are composed of one or more cells, which are the basic units of structure and perform essential life functions.

C. All organisms are composed of many cells that have basic units with unique structures and functions.

D. All organisms are composed of one or more cells with the same shape and purpose but are not the basic units of structure.


Which best explains why muscle is considered a tissue?

A. It is connected to bones.

B. It can move voluntarily or involuntarily.

C. It interacts with several organ systems.

D. It is a group of cells working together.


How are tissues and organs related?

A. Groups of tissues form cells, which work together to make up a single organ.

B. Groups of organs form cells, which work together to make up a single tissue.

C. Groups of tissues work together to make up a single organ.

D. Groups of organs work together to make up a single tissue.


How do the digestive system and the circulatory system work together in the human body?

A. The digestive system sends electric messages, while the circulatory system responds to the messages.

B. The digestive system provides structure for the body, while the circulatory system directs the movement.

C. The digestive system removes liquid toxins from the body, while the circulatory system removes solid waste.

D. The digestive system extracts nutrients from food, while the circulatory system transports those nutrients.




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