Part 1: Nature of Science, Microscopes, Properties of Water, Basic Molecular Structure & Function, and Enzymes Flashcards
Independent Variable
The factor that changes ON PURPOSE in the experiment.
Dependent Variable
The factor that one MEASURES in the experiment.
Control Variable
All factors that are KEPT CONSTANT in the experiment.
Theory
Explanation of the natural world based on strong specific support; always changing; CANNOT become a law.
Law
Description of what we expect to happen in the natural world; Based on observations and data collected over time.
Dissecting Microscope
(Light Microscope) Examines organs and tissues during dissection.
Compound Light Microscope
(Light Microscope) Examines tissue samples, blood, microorganisms in pond water, microscopic cells, and some larger details within cells.
Transmission Electron Microscope (TEM)
(Electron Microscope) Mainly used for studying the internal structures of cells that cannot be viewed under light microscopes.
Scanning Electron Microscope (SEM)
(Electron Microscope) Useful for studying the details of a specimen’s surface.
Hydrogen Bonding
The attraction between slightly (+) Hydrogen of one water molecule and the (-) Oxygen of another water molecule.
Surface Tension
To resist external force.
Cohesion
Two like substances are attracted to each other.
Adhesion
One substance is attracted to another.
Carbohydrates
Organic compound used to store energy.
Proteins
Organic compound made up of small molecules called amino acids.
