Homework on Homeostasis, Scientific Method and Science of Life

Homeostasis is...

• the maintenance of a constant internal environment.

• the process by which metabolic waste and other substances are removed from the body.

• The process by which living organisms take in materials necessary for growth and energy.

• The chemical reactions that take place inside cells and release energy from the breakdown of nutrients.

If the environment gets cold, we will often shiver in order to:

• keep body temperature the same as the external temperature

• decrease body temperature

• increase body temperature

• regulate blood pressure

Homeostasis

• allows for a wildly fluctuating internal environment

• is impossible in vertebrates

• is the maintenance of a relatively stable internal environment and often incorporates a form of feedback regulation

• is the maintenance of a relatively stable external environment and often incorporates a form of feedback regulation

The group of organisms that use the process of homeostasis includes

• mammals, only

• animals, only

• plants and animals

• all living things

Which of the following is not regulated by homeostasis?

• body temperature

• blood sugar

• blood pH

• body movements

Negative feedback is when changes occurring,

• return the body to the original condition

• return the body to a different condition

• make the body feel bad

• make the body move

Negative feedback loops:

• amplify processes

• prevent small changes from getting larger

• are initiated during childbirth

• are found only in plants

The study of biology includes things that were one living and those alive today. 

• true
• false

These are all characteristics of life except...

• respond to stimuli

• maintain a steady internal envorinment
• reproduce and pass along traits

• the absence of cells

Which of these would be a topic to study in biology? 

• the chemicals in gas
• the atoms that make up the atmosphere
• the rock formations in the Rio Grande
• the digestive system of an earthworm