Amoeba Sisters Characteristics of Life

Front

What is an external stimulus?

Back

An external stimulus is a change in the environment that causes an organism to respond, such as a pony sensing danger and fleeing.

Front

What is a multicellular organism?

Back

A multicellular organism is made up of many cells that work together, such as humans, plants, and animals.

Front

What is a unicellular organism?

Back

A unicellular organism is made up of a single cell, such as bacteria and amoebas.

Front

What is metabolism?

Back

Metabolism refers to the chemical reactions that occur within a living organism to maintain life, including processes like digestion and energy production.

Front

What is homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in external conditions.

Front

What is a feedback system?

Back

A feedback system is a biological mechanism that helps maintain homeostasis by regulating internal conditions, such as temperature and pH.

Front

What is the difference between prokaryotic and eukaryotic cells?

Back

Prokaryotic cells are simple, single-celled organisms without a nucleus (e.g., bacteria), while eukaryotic cells are more complex and have a nucleus (e.g., plants and animals).

Front

What is growth in living organisms?

Back

Growth refers to the increase in size or number of cells in an organism, which can occur through cell division and differentiation.

Front

What is reproduction in living organisms?

Back

Reproduction is the biological process by which new individual organisms are produced, either sexually or asexually.

Front

What is an internal stimulus?

Back

An internal stimulus is a change within an organism that prompts a response, such as hunger or thirst.