1.3 Studying Life

Biology is the study of:

• life
• fossils
• oil
• history

Living things are made up of basic units called:

• viruses
• atoms
• cells
• organs

All life on Earth is based upon a universal genetic code (DNA).

• True
• False

All living things use:

• materials and energy
• materials
• energy
• brain tissue

This insect is living because during its life it will:

• Develop
• Grow
• Is made of atoms
• Grow and develop

This virus is like a living thing.  However, it is not, mainly because it:

• can reproduce with a host
• has genetic material
• isn't made of cells
• moves

Homeostasis is a characteristic of living things.  It means:

• maintaining a stable internal (inside) environment
• using a lot of energy
• growth and development
• reproduction

All living things respond to stimuli.  Which is NOT an example of this?

• Plants create chemicals to protect them from predators.
• Cells come from cells.
• Your pupils dilate if it is dark.
• A cold bird ruffles her feathers.

Populations evolve, or change, over time.

• True
• False

The process in which 2 cells from different parents unite to produce the first cell of a new organism is called:

• homeostasis
• development
• asexual reproduction
• sexual reproduction