Bio Unit 1 Lesson 1

Unit 1: Lesson 1

Life in the Earth System

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Standards and Objective

Objective: To use models to illustrate the relationship between components of living and nonliving systems.

Standard: Bio 2.1.3 Explain various ways organisms interact with each other (including predation, competition, parasitism, mutualism) and with their environments resulting in stability within ecosystems.

Vocabulary: system, feedback, model, emergent property, ecosystem, organism, biotic factor, abiotic factor, homeostasis

Engage

What determines what is a living thing?

Rocks Water Air Fire Virus

Bacteria Protists Fungi Plants Animal

Exploration 1: Systems and System Models

A system is a set of interacting components considered to be a distinct entity for the purpose of study or understanding.

What systems can you define in the world around you?

Boundaries define the space of the system to separate it from the rest.

Components are all the parts of the system that help it carry out its function.

Inputs and outputs of different types of systems include energy, matter and information.

Types of Systems

What do you think?

Controls & Feedback

Feedback

Feedback Loop

Controls

Input signals an output in a continuous pattern

help a system work properly by monitoring and managing the input and output.

It is information from one step of a cycle that ats to change the behavior of a previous step of a cycle.

System Organization can range from simple to complex.

Thermostat

Simple Systems

Robot

Complex

Solar System

Large

System Models

• A model is a pattern, plan, representation, or description designed to show the structure or workings of an object, system, or concept

Systems Biology

• Applying systems thinking to biology - allows scientists to consider biological phenomena at different scales and examine how the components of a biological system interact.
• Emergent Property - property that a system has but that is component parts do not have

Examples

Using Systems

A systems approach in scientific research of diseases, such as Parkinson's disease, requires collaboration among many different areas of science.

Exploration 2: The Earth System

To understand living things better, we can study the systems in which they exist.

Atmosphere

Hydrosphere

Geosphere

Biosphere

Organization of the Biosphere

Organism

Population

Community

Ecosystem

Biome

Biosphere

Biotic vs. Abiotic

Characteristics of Living Things

made up of one or more cells

reproduce by making copies of themselves or have offspring

require an energy source

responds to changes in the environment

grow and change over time