Studied by 15 people
Looks like no one added any tags here yet for you.
Scientific Method
A process involving an observation, testing a hypothesis, and analyzing results
hypothesis
a testable, proposed explanation
Law
description of what happens
theory
explanation of how
Model
generalized representation of a real, complex system
Biosphere
layer around earth in which life exists
species
group of organisms that can interbreed and produce fertile offspring
population
number of species at a given time and place
community
all population in a time and place
ecosystem
all living and nonliving things in a particular area
environment
collection of all factors in which we exist
Fitness
survival + reproduction
Covalent Bond
equal sharing of electron(s)
Polar Covalent Bond
Unequally shared electron(s)
Hydrogen Bond
Polar molecules that make water
Orbitals
space around the atom for electrons to buzz around in
cohesion
like attracts like
Adhesion
like attracts different
Specific Heat
water needs a lot of energy for it to change temperature
Organic compounds
a compound made of carbon bonded to another atom
Polymer
big molecule made by monomers
monomer
a single molecule; building block
Carbohydrates
sugars, starches, and cellulose
Lipids
fats, sterols, and waxes
Saturated fats
Fats made of single bonds. Harder to break down
Unsaturated Fats
Fats made from single bonds and double/triple bonds. Easier to break down
Phospholipids
important component to cell membranes
amphipathic
loves and hates water
Enzymes
control chemical reactions
Amino acids
protein building blocks
Diffusion
movement of particles from high to low concentration
Osmosis
diffusion of water
Evolution
Change over time, specifically change in inherited traits or species.
Natural Selection
organisms with certain traits are more likely to survive and reproduce than others
Mutations
changes in genetic material of an individual
Charles Darwin
Father of Evolution. Argued: environment selects for (+) and against (-) traits based on fitness
Unifying Concepts of life
Made of cells, respond to environment, require energy, reproduce, have DNA, and require water
Major points of understanding evolution
Variation exists, characteristics are inherited, environment affects people differently, some genes will or will not be selected by the environment
What is not a random process?
natural selection
Protons are…
positive
Electrons are…
negative
Neutrons are…
neutral
Note
Flashcard