Uni & Multi 7 Q Review

Which best explains why a human needs many cells to survive?

• A.

  Each individual cell is too small to function alone.

• B.

  Each cell joins with other cells to form one massive cell.

• C.

  Each cell works with other cells to perform all necessary life functions.

• D.

  Each cell absorbs a different gas from the environment necessary for human survival.

What is the difference between single-celled organisms’ and multicellular organisms’ ability to survive?

• A.

  Multicellular organisms depend on other organisms for survival, while single-celled organisms do not.

• B.

  Single-celled organisms depend on other organisms for survival, while multicellular organisms do not.

• C.

  Single-celled organisms contain many specialized cells necessary for survival, while multicellular organisms do not.

• D.

  Multicellular organisms contain many specialized cells necessary for survival, while single-celled organisms can survive alone.

A scientist is trying to decide whether an organism is unicellular or multicellular.  Which information would help the scientist most to make her decision?

• A.

  size of the cells of the organism

• B.

  what the organism eats

• C.

  how many types of cells are in the organism

• D.

  how fast the organism grows

Which characteristic do single-celled organisms and multicellular organisms have in common?

• A.

  Both have cells with specialized functions for each life process.

• B.

  Both perform all life processes within one cell.

• C.

  Both have a way to get rid of waste materials.

• D.

  Both are able to make food from sunlight.

A single-cell organism can do everything a cell from a multicellular organism can do EXCEPT

• A.

  specialize.

• B.

  reproduce.

• C.

  move.

• D.

  remove waste.

Which BEST describes ALL unicellular organisms?

• A.

  Every cell is round.

• B.

  Every cell can make food.

• C.

  Every cell can move on its own.

• D.

  Every cell performs all life functions.

How can an amoeba able carry out all of its life’s functions?

• A.

  by having specialized cells

• B.

  by being larger that most organisms

• C.

  by being smaller that most organisms

• D.

  by performing all processes in one cell