Unicellular & Multicellular

Unicellular & Multicellular Organisms

5.L.1.1

Tuesday 9.22

Multiple Choice

What is the smallest part of a living thing that can carry out all the processes of life. These tiny structures perform different jobs, or functions, to keep cells alive.

• cell

• organism

• body systems

• animals

Multiple Choice

Single-celled organisms must be able to

• specialize their cells to each perform a specific function.

• perform all necessary functions of life with only one cell.

• perform no functions with any of their cells.

• choose only one function to perform with their one cell.

Multiple Choice

How do bacteria compare with humans?

• Both are multicellular organisms

• Both are unicellular organisms

• Only bacteria are multicellular organisms.

• Only humans are multicellular organisms.

Multiple Choice

Which is an example of a single-celled organism?

• amoeba

• insect

• fish

• worm

Fill in the Blanks

Euglena has a

part that moves it forward.

Multiple Select

Which of the following are unicellular organisms? (YOU WILL CHOOSE MORE THAN ONE)

• Euglena

• Paramecium

• Amoeba

• Bacteria

• Muscle Cells

Multiple Choice

What is the main reason that multi-celled organisms, such as humans, have developed specialized cells?

• so parts of the body will no longer be necessary

• so cells can do more in less time

• because specialized cells require more energy than one cell performing all functions.

• so cells can be lazy

Multiple Choice

Which statement about the different types of cells is true?

• Different types of cells have similar shapes and sizes.

• Different types of cells do not need each other in order to survive.

• Different types of cells cooperate to keep the organism alive.

• Different types of cells look different, but they all do the same job.

Multiple Choice

Why is the shape and size of a cell important to its function?

• The shape and size of a cell help the cell live longer.

• The shape and size of a cell help the cell perform a specific function.

• The shape and size of a cell help the cell grow larger.

• The shape and size of a cell depend on the number of organelles it has.

Multiple Choice

All organisms are made up of cells. Organisms can have...

• either many cells or no cells.

• only one cell each.

• one cell or many cells.

• 200-300 cells each

Multiple Choice

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

• Both have cells with specialized functions for each life process.

• Both perform all life processes within one cell.

• Both have a way to get rid of waste materials.

• Both are able to make food from sunlight.

Multiple Choice

Which of the following is a difference between single-celled and multi-celled organisms?

• Multi-celled organisms need food to survive, but single-celled organisms do not.

• Multi-celled organisms are more complex than single-celled organisms.

• Single-celled organisms are more complex than multi-celled organisms.

• Single-celled organisms need food to survive, but multi-celled organisms do not.

Multiple Choice

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

• size of the cells in the organism

• what the organism eats

• how many types of cells are in the organism

• how fast the organism grows