Unit 1 Intro to Bio PDF

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Unit 1 Lesson objectives and notes...

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Unit 1: Biology: The Science of Life (Modules 1–3) Module 1: Introduction to Biology • Classify items as biotic (living) or abiotic (nonliving).

1. To be considered alive, something must: a. Be made of materials organized in a hierarchical pattern b. Use energy and raw materials to survive c. Sense and respond to changing environments and maintain internal stability, or homeostasis. d. Grow, develop, and reproduce e. Be part of a population that evolves. • Identify the levels of biological organization from atom to biome. Atom- molecule – cell – organelle – tissue – 0rgan – organ system – organism – population – community – ecosystem - biosphere -

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Macromolecules – technically polymers, made by combining monomers. EX. DNA Prokaryote cells – small and simple, no compartments inside Eukaryote cells – contain membrane bound organelles o One of these organelles is the nucleus, which encloses the DNA within the cell. Population contains the individual species in a specific area Community is all the populations interacting with each other Ecosystem contains all the biotic and abiotic things of that environment Biome- areas with similar characteristics of living and non-living things Biosphere is all the parts of earth, including the atmosphere

Module 2: Themes in Biology • Describe homeostasis. -

Definition: the ability of organisms and cells to maintain stable internal conditions If surroundings change quickly, the cell/organism react in a corrective way If an organism doesn’t maintain homeostasis, it will die

• Describe how energy flows through an ecosystem. -

Energy does not have mass or take up space Energy changes forms as it goes. Energy in sunlight is captured in plants, which are in turn eaten by an organism and does work. Energy is not recylcled.

• Describe how matter cycles through an ecosystem

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When an organism eats another organism, the atoms of the prey become part of the predator. Matter not absorbed by the predator is released as waste. Waste produced by the predator, then becomes nutrients to another

. • Compare and contrast types of interactions and relationships between species within a community. -

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Various parts of living systems are interdependent Some organisms have overlapping roles in with other species o Oak trees can be different species but have the same or similar roles o Sapsuckers provide nesting holes for other species Predator/prey relationships

• Describe the process (steps) of DNA replication. -

Individual organism passes on its genetic information to a newly independent organism DNA is turned on or off in each cell, leading to different shapes and structures Specialized cell types form

• Analyze the process of natural selection and its relationship to evolution at the population level. -

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Natural selection helps explain how groups of organisms become adapted to their surroundings. A tiny fraction have characteristics that allow organisms to survive and reproduce. Traits that fit with the local habitat will have the greatest chance to survive. Each generation, the genes of offspring very slightly, the lucky ones reproduce while others die, leaving no descendants. As generations pass, inherited features that help organisms reproduce become more common within a population

Module 3: Scientific Inquiry • Apply the process of scientific inquiry to questions about the natural world. -

Asking questions helps us learn about the natural world Biology is a natural science Scientific Inquiry is an approach to asking and answering questions

• Relate experimental design to the process of scientific inquiry. -

Since scientific inquiry is used to ask and answer questions, experimental design allows us to test hypothesis to answer those questions. You need to have an experimental in order to test your hypothesis Control group is given a placebo

Unit 1 Lab: The Science of Life • Apply the process of scientific inquiry to questions about the natural world....