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Journal Entry:
What is the difference between negative and positive feedback loops?
Learning Intentions
We will learn to analyze the key elements of a cell signaling pathway.
We will learn to explain ways that signal transduction pathways can be altered.
We will learn the difference between negative and positive feedback loops and be able to model an example of a feedback loop.
Closing Task:
You can model an example of a feedback loop.
Content Standards being covered:
Topics:
IST-3.D Describe the role of components of a signal transduction
pathway in producing a cellular response.
IST-3.E Describe the role of the environment in eliciting a cellular response.
IST-3.F Describe the different types of cellular responses elicited by a signal transduction pathway.
ENE-3.A Describe positive and/or negative feedback mechanisms
ENE-3.B Explain how negative feedback helps to maintain homeostasis
ENE-3.C Explain how positive feedback affects homeostasis
Science Practices:
1.A Describe biological and/or processes.
1.B Explain biological concepts and/or processes.
6.C Provide reasoning to justify a claim by connecting evidence to biological theories.
6.E.b Predict the causes of effects of a change in, or disruption to, one or more components in a biological system based on a visual representation of a biological concept, process, or model.