biology
the scientific study of living things
science
observation, identification, experimentation, investigation and theoretical explanation of natural phenomina
scientific method
the scientific method is a body of techniques for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.
hypothesis
the assumption about what will happen during an experiment or observation based on reason and experience.
experiment
set of organized steps followed under controlled conditions to test a theory or hypothesis.
dependent variable
the variable that depends on the other variables - data - what is measured.
independent variable
in an experiment, the factor that the scientists deliberately manipulates.
control group
in an experiment, it is the group that has no changes to it - the natural expected conditions.
qualitative data
data that represents qualities or characteristics that can be expressed by a number. categories (example smooth, rough)
quantitative data
data that represents a quantity; numeric data. numbers
inference
making an explanation for an observation
observation
what you see.
homeostasis
a state of balance reached through reactions within a cell or organism. (Greek = stays the same)
metabolism
The chemical processes we need for life (the total of all chemical reactions within an organism).
organism
any living thing that takes in food, grows, and reproduces.
Characteristics of Life
1. cells & organization, 2. use of energy & metabolism, 3. responds to the environment, 4. regulations & homeostasis, 5. Growth & development, 6. reproduction, 7. evolution
organ
a group of different tissues that work together to perform a specific function.
organelle
a differentiated structure within a cell that performs a specific function. example: chloroplast, mitochondria.
tissue
a group of cells that are similar in structure and that work together to perform a certain function.
Levels of Organization
atom-molecules-macromolecules-cells-tissues-organs-organ systems-organisms-populations-communities-ecosystems-biosphere.
abiotic
relating to non biological factors.
biome
a large area dominated by characteristic plants and animals. example: rain forest, tundra
biotic
relating to factors that are associated with or result from the activity of living organisms
community
all of the populations that live and interact with each other in a particular area.
ecosystem
a community or group of organism living and interacting with each other and their environment.
population
all of the members of one species that live in a common area and whose population dynamics are different from those of other populations.
adenosine triphosphate
ATP: the molecule that delivers usable chemical energy for almost all processes and reactions that a cell must undergo to survive. Energy comes from backing the bonds in the phosphate tails.
cellular respiration
the process of breaking down glucose for the production of ATP in the presence of oxygen.
photosynthesis
the process by which plants and certain other organism use the energy of sunlight to convert carbon dioxide and water into sugar and oxygen.