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TEK 7.13(13) Organisms and environments. The student knows that a living organism must be able to maintain balance in stable internal conditions in response to external and internal stimuli. The student is expected to:.

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TEK 7.13(13) Organisms and environments. The student knows that a living organism must be able to maintain balance in stable internal conditions in response to external and internal stimuli. The student is expected to:

investigate how organisms respond to external stimuli found in the environment such as phototropism and fight or flight; and

describe and relate responses in organisms that may result from internal stimuli such as wilting in plants and fever or vomiting in animals that allow them to maintain balance.

4 20 11 word wall tek 7 13
4.20.11 Word Wall TEK 7.13
  • We will create a word wall for homeostasis TEK 7.13
  • Warm up: Name the 4 ways we know there has been a chemical change:
homeostasis
Homeostasis:
  • a living organism must be able to maintain balance in stable internal conditions in response to external and internal stimuli
internal stimuli
Internal Stimuli:
  • when an organism responds to an unbalance inside its self.
  • Ex: vomiting, fever, wilting plant
external stimuli
External stimuli

when an organism responds to its surround environment

EX: fight of flight or phototropism

fight of flight
Fight of flight:
  • if an organism feels threatened it responds with adrenaline, which prepares the body to fight or run away.
phototropism
Phototropism:
  • when a plant grows towards the light source
slide8

Recall: stimuli is something an organism reacts to

  • Summary: Explain what type of stimuli you are reacting to when you vomit and have a fever
  • Out: Explain what type of stimuli a plant is reacting to when it wilts

** use complete sentences with capital letters, periods, and NO PRONOUNS! **

4 19 11 edusmart 7 13
4.19.11 Edusmart 7.13
  • We will use edusmart to learn about stimulus and response and take a quiz
  • Warm up: describe the

difference between stimuli and

response

slide10

Recall: Phototropism is when a plant responds to the stimulus of light by growing towards the light source

  • Summary: all organisms have to respond to stimuli in order to survive
  • Out: Explain a situation where you think your body would go into fight or flight response. Do you think you would fight or flight, why?

** use complete sentences with capital letters, periods, and NO PRONOUNS! **

4 25 11 stimuli response lab
4.25.11 Stimuli/response Lab
  • We will conduct and investigation to understand stimuli and response.
  • Warm up: This element has a high luster and is malleable… what type of element is it?
slide13

Complete each station. In your journal you need to record the following:

  • Lab name
  • The problem/purpose
  • Data chart and data collected
  • Complete sentence answers to analysis questions
slide14

Recall: organisms can respond to internal or external stimuli

  • Summary: Reacting to an abiotic factor would be an example of what kind of stimuli? (use a complete sentence without pronouns)
  • Out: Complete the chart with as many examples as you can think of: