Grade 5 Structures and Functions of Living Organisms and Genetics Unit Test

Is it possible for an organism to survive with only one cell?

• no, because organisms need many cells to be able to perform functions for life

• yes, as long as the organisms can perform all functions needed for life in that one cell

• no, because organisms cannot complete all necessary functions for life in such a small space

• yes, as long as the organism has multiple specialized parts with each performing a specific function

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Which is true about the cells of a tree?

• A tree is not made up of cells because it is a producer.

• A tree is made up of one cell that carries out all life processes.

• A tree is made up of many cells that carry out its different life processes.

• A tree is made up of three cells; one for leaves, one for roots, and one for the trunk.

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Which is an activity that a single-celled organism cannot perform?

• eating

• walking

• reproducing

• removing waste

Which best describes a multicellular organism?

• made up of one cell that carries out all life processes

• made up of many cells that carry out all life processes

• made up of one cell that carries out a single life process

• made up of many cells that all carry out a single life process

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Which best explains why bacteria is able to survive as a single-celled organism?

• A bacteria cell can produce its own water and food.

• A bacteria cell is tiny and hides easily from other cells.

• A bacteria cell can depend on other cells to meet its needs.

• A bacteria cell can complete all functions necessary for life.

Which is a characteristic that single-celled and multi-celled organisms have in common?

• Both need food and water to survive.

• Both need many specialized cells to survive.

• Both are dependent on other cells to survive.

• Both are large and need lots of space to survive.

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How is the muscular system different from the digestive system?

• The muscular system moves the bones, while the digestive system provides the body with nutrients.

• The muscular system provides the body with nutrients, while the digestive system moves the bones.

• The muscular system provides oxygen to cells, while the digestive system protects the major organs.

• The muscular system protects the major organs, while the digestive system provides oxygen to cells.

Which best explains how the nervous system controls the skeletal system?

• The brain protects the skull.

• The brain stores calcium for bones.

• The brain produces red blood cells for bones.

• The brain sends messages to the muscles to move bones.

Which systems work together to provide oxygen to the body's cells?

• digestive and nervous

• respiratory and nervous

• digestive and circulatory

• respiratory and circulatory

Which best describes how the digestive system compares to the respiratory system?

• The digestive system removes waste, while the respiratory system breaks down food.

• The digestive system provides food to cells, while the respiratory system provides oxygen for cells.

• The digestive system provides oxygen for cells, while the respiratory system provides food to cells.

• The digestive system moves food through the bloodstream, while the respiratory system removes waste.