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life characteristics
biology
| Question | Answer |
|---|---|
| what are the 8 characteristics of life | 1. made up of one or more cells 2. displays organization 3. grows and develops 4. reproduces 5. responds to stimuli 6. requires energy 7. maintains homeostasis 8. adapts and evolves over time |
| what is technology | the application of science |
| which two traits of life do viruses not show | *made up of one or more cells *reproduces (on its own) |
| the basic unit of structure and function in all living things | cells |
| living things display organization which means that are arranged in an _________ way. | orderly |
| ________ cells are organized into groups that work together called ________. | specialized tissues |
| what are tissues organized into? | organs |
| what work together to support an organism | organ systems |
| starting with atom, name the characteristics of life from least to most complex | atom molecule cell tissue organ organ system organism |
| give an example of organization in humans | cell: specialized muscle cell tissue: muscle tissue in heart called cardiac muscle organ: heart organ system : cardiovascular system organism: human |
| what does growth result in? | addition of mass to an organism and the formation of new cells / structures |
| what is development | gaining abilities and changing |
| is reproduction essential for the survival of an individual? | no |
| what is reproduction essential for ? | the continuation of the species |
| what is a species | a group of organisms that can breed together and produce fertile offspring |
| what are the different classifications from general to most specific | kingdom phylum class order family genus species |
| what is a stimulus | anything part of the external or internal environment and causes a reaction by the organism |
| what is the reaction to a stimuli | response |
| what is an internal example of stimulus | you eat lunch and peristalsis begins (muscles push food through digestive system) |
| what is an external example of stimulus | the sun sets and nocturnal animals begin to move about |
| where does all energy for life originate | the sun |
| what are autotrophs | plants and some unicellular organisms that use light energy from the sun to make their own food |
| what are heterotrophs | organisms that cannot make their own food and get energy by consuming other organisms |
| what is homeostasis | regulation of an organism's internal conditions to maintain life |
| what happens if anything happens within or to an organism that affects its normal state | processes to restore the normal state begin |
| what is an example of the body trying to return to its normal state? | when you eat, your blood sugar levels rise. as a result, your pancreas releases insulin which causes blood sugar to drop down to normal this is why diabetics inject insulin |
| what is an adaptation | an inherited characteristic that results from changes to a species over time |
| what do adaptations do for organisms? | allow them to survive and pass their genes on to the next generation |
| what is an example of an adaptation | giraffes used to have much shorter necks. because of competition for food, the longer necked giraffes survived longer soon, the longer neck giraffes were all that remained because the giraffes with the shorter necks died out |
Created by:
graceht