LS.7.1.3 - Levels of Organization

What is the basic unit of structure and function in living things?

• Tissue

• Cell

• Organ

• Organism

What term describes an organism made up of only one cell?

• Multicellular

• Unicellular

• Organism

• Tissue

Which of the following is made up of more than one cell?

• Unicellular

• Multicellular

• Tissue

• Organ

A group of similar cells that perform the same function is called:

• Organ

• Organ system

• Tissue

• Organism

Which of the following is a collection of tissues that carry out a specialized function of the body?

• Organ

• Organ system

• Cell

• Organism

Which option best describes an organ system?

• A group of similar cells

• A group of organs that work together to perform a specific function

• A single cell

• A collection of tissues

Arrange the following in order from simplest to most complex: Organ, Cell, Tissue, Organ system.

• Cell, Tissue, Organ, Organ system

• Organ system, Organ, Tissue, Cell

• Tissue, Cell, Organ, Organ system

• Cell, Organ, Tissue, Organ system

If a scientist discovers a new living thing that is made up of only one cell, which term would best describe it?

• Multicellular

• Organ system

• Unicellular

• Tissue

Which of the following best explains the relationship between tissues and organs?

• Tissues are made up of organs.

• Organs are made up of tissues.

• Tissues and organs are the same thing.

• Organs are smaller than tissues.

A student claims that an organ system cannot function if one of its organs fails. Use your understanding of the levels of organization to explain whether you agree or disagree with the student’s claim.

• Disagree, because organ systems can function without all organs.

• Agree, because each organ in an organ system has a specific role that is necessary for the system to function properly.

• Disagree, because tissues can replace the function of organs.

• Agree, because cells can take over the function of the missing organ.