bio exam 1 - lecture one

Metabolism

Chemical reactions inside cells that turn food into energy or useful molecules

Growth

The ability of an organism to get bigger and maintain an internal balance

Reproduction

Making new copies of oneself to keep the species going

Pasteurization

Using heat to kill organisms for the purpose of extending the life of food

Germ theory

Idea that all infections come from the spread of germs or pathogens that invade the body

Miasma theory

Disease spreads through bad air (smell)

Purity

Disease come from gods wrath

Spontaneous generation

Disease grew out of non-living material or the aether

Humors

Imbalances in the body (blood letting

What must something do in order to be considered alive?

metabolism, growth, reproduction, adaptation

What is the organization of life?

Atom, molecule, cell, tissue, organ, organ system, organism

Atom

Smallest unit of life composed of protons, neutrons, electrons

Molecule

Group of two or more atoms of the same or different elements

Cell

The structural and functional unit of all living organisms

Tissue

A group of cells with a common structure and function

Organ

Tissues functioning together for a specific task

Organ system

Organs working together

Organism

An individual, complex organisms contain organ systems

Science

Systematic way of learning about the world through observation, questions, and testing