Biology - 1.3 - Studying Life (1)

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

• homeostasis.
• development.
• asexual reproduction.
• sexual reproduction.

The process by which organisms keep their internal conditions relatively stable is called

• metabolism.
• a genome.
• evolution.
• homeostasis.

How are unicellular and multicellular organisms alike?

• They both perform all eight life functions.
• They both are dependent on other cells for survival. 
• Their plasma membranes are both completely exposed to external environments. 
• They both consist of one cell. 

How are unicellular and multicellular organisms different?

• Unicellular organisms are one celled and multicellular organisms are composed of more than one cell. 
• Both unicellular and multicellular organisms consist of specialized cells that carry out specific functions.
• Their plasma membranes are both completely exposed to external environments. 
• They both consist of one cell which is dependent upon other cells for survival. 

The smallest living thing is a

• species.

• molecule.

• cell.

• ecosystem.

When you step out into the cold, your body shivers in order to keep its temperature at 98.6F.

• All living things use energy

• All living things contain cells

• All living things maintain homeostasis

• All living things grow

Green plants produce their own food through the process of photosynthesis.

• All living things use energy

• All living things contain cells

• All living things maintain homeostasis

• All living things grow

Baby birds hatch from their eggs with both parent songbirds watching.

• All living things reproduce

• All living things maintain homeostasis

• All living things use energy

• All living things grow

A caterpillar hibernates in a cocoon and emerges as a butterfly.

• All living things adapt to their environment

• All living things use energy

• All living things respond to their environment

• All living things grow and develop

An amoeba is a unicellular organism. Which characteristic of life is this?

• All living things use energy

• All living things contain cells

• All living things respond to their environment

• All living things grow