cell bio e1 definitions

atom

Smallest and most fundamental unit of matter that retains the properties of an element

molecule

chemical structure consisting of at least two atoms held together by one or more chemical bonds

Macromolecules

large molecule, typically formed by the joining of smaller molecules

Organelles

small structures that exist within cells and carry out cellular functions

Tissues

group of similar cells carrying out related functions

organs

collection of related tissues grouped together performing a common function

Organ system

level of organization that consists of functionally related interacting organs

organisms

individual living entity

Population

all of the individuals of a species living within a specific area

Community

Set of populations inhabiting a particular area

Ecosystem

All the living things in a particular area together w/the abiotic, nonliving parts of that environment

Biosphere

Collection of all the ecosystems on Earth

Hypothesis

Suggested explanation for an observation, which one can test

Theory

tested and confirmed explanation for observations or phenomena

Inductive reasoning

form of logical thinking that uses related observations to arrive at a general conclusion

Deductive reasoning

form of logical thinking that uses a general inclusive statement to predict specific results

Descriptive science

(also, discovery science) form of science that aims to observe, explore, and investigate

Hypothesis-based science

form of science that begins with a specific question and potential testable answers

buffer

solution that can resist pH change