Biology Environmental Science The Science of Biology Scientific

Biology / Environmental Science The Science of Biology

Scientific Method

Scientific Method Observation Using one of more senses (touch, hearing, sight, smell, taste) to gather information

Scientific Method Data Information gathered from observations

Scientific Method Hypothesis Possible answer to a scientific question

Scientific Method Responding Variable Also known as Dependent Variable The factor that scientists observe that may change in the experiment Graphed on the Y – axis * DRY *

Scientific Method Manipulated Variable Also known as Independent Variable The factor that scientists change in the experiment Graphed on the X – axis * MIX*

Scientific Method Controlled Variable The factor in the experiment that the scientists purposely keep the same

Scientific Method Theory A well-tested explanation the unifies a broad range of observations A well supported hypothesis

Characteristics of Life All living things: Are made of cells

Characteristics of Life All living things: Reproduce

Characteristics of Life All living things: Have a genetic code (DNA)

Characteristics of Life All living things: Grow and Develop

Characteristics of Life All living things: Obtain and Use Energy

Characteristics of Life All living things: Respond to their environment

Characteristics of Life All living things: Maintain Homeostasis

Characteristics of Life All living things: Evolve

Levels of Organization • Smallest Level Atoms

Levels of Organization Next Level Molecules

Levels of Organization • Macromolecules • Lipids, Carbohydrates, Protein, Nucleic Acid

Levels of Organization • Organelles

Levels of Organization The Basic Unit of Life • Cells

Levels of Organization • Cells make: • Tissue • Organs • Organ Systems

Levels of Organization • Organisms

Levels of Organization • Population

Levels of Organization • Community

Levels of Organization Ecosystem

Levels of Organization • Biome

Levels of Organization • BIOSPHERE

TOOLS • Triple Beam Balance • Measures mass • In grams (g)

TOOLS • Graduated Cylinder • Measures volume • In milliliters (ml)

TOOLS • Meter Stick • Measures length • In centimeters (cm) or millimeters (mm)

Tools • Microscope • Objects appear upside down • Objects appear to move in opposite direction