Science 1

Which level of organization is the smallest and simplest?

• Cell

• Tissue

• Organ

• Organ System

• Organisms

Which of the following is considered the smallest unit of life?

• Atom

• Cell

• Organelle

• Molecule

Groups of cells with similar functions.

• Organs

• Molecules

• Tissues

• Organelles

This is the most basic unit of life

• atom
• cell
• nucleus
• DNA

Cells come only from what?

• existing cells
• nucleus
• fission
• budding

The Cell Theory states...

• atoms create all matter
• living things evolve
• the cell is the backbone of all matter
• cells are the basic unit of structure and organization of organisms

Homeostasis in a cell is a way for the cell to stay ...

• Balanced

• Alive

• Growing

• Dividing

An Amoeba is a unicellular, animal-like protist that lives in ponds and streams. According to cell theory, where did this cell come from?

• another pre-existing amoeba cell.
• energy from sun that allowed the protist to reproduce.
• a multicellular organism.
• the nonliving environment.

How can you tell this plant is a living thing?

• It doesn't move.
• It is made up of different parts.
• It responds to a change in its environment.
• It needs shelter.

The following list represents characteristics of a living thing :

• made of cells, has lungs, can reproduce

• grows and develops, responds to surroundings, can move

• has similar chemicals, makes noises, made of cells

• made of cells, grows and develops, uses energy