Characteristics of Living Things
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Transcript of Characteristics of Living Things
![Page 1: Characteristics of Living Things](https://reader030.fdocuments.net/reader030/viewer/2022032612/568133e4550346895d9ad6b7/html5/thumbnails/1.jpg)
Based on Holt 12.1
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How can you tell if something is alive?
List two things that are alive and two things that are not alive.
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All living things need to eat, drink, or absorb energy from the environment
Energy used to create and break down molecules
Metabolism: the total amount of activity happening in the body
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All living things (organisms) grow larger as they make more molecules
They either keep getting bigger or they make more organisms
Growing organisms often change in appearance
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Asexual reproduction: single parent makes identical offspring (children)◦ Similar to a clone
Sexual reproduction: Two parents make offspring that share traits of both parents
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DNA: molecule of information necessary for life◦ Tells the body what to do
and how it should look
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Stimulus: (plural = stimuli): things in the environment that change and cause reactions in living things
Examples: light, heat, water, food, sounds
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The body of organisms wants to stay “comfortable”
Homeostasis: keeping a stable internal environment
Examples: shivering, sweating, getting thirsty
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Cell: smallest living unit
Building block of living things
More details in Chapter 13!