Biology Chapter 1- Eaton

Trade-off

A sacrifice to get what you want

Risk

What could go wrong

Prokarotic

No nucleus example: bacteria

Eukaryote

Has a nucleus everything but bacteria

Conceptual Model

Diagram or chart

Cell Theory

All living things are made if one or more cells, cells are the basic unit of life, all cells came from pre-existing cells

Hierarchy of Life

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

Circulatory/Cardiovascular System

Transports oxygen, nutrients, hormones and waters

Digestive

Breaks down food and absorbs nutrients

Endocrine

Produces hormones that act on target tissue in other organs influence growth development

Excretory

Filters blood, eliminates waste products, helps Homeostasis

Immune

Protects against disease; stores and generates white blood cells

Integumentry

Protects against infection

Muscular

Produces voluntary and involuntary movements

Nervous

Regulates body's response to change internal or external

Reproductive

Produces and transports reproductive cells

Respiratory

Brings oxygen into the body. Gets rid of carbon dioxide.

Sketetal System

Protects and supports vitals organs

Cell Membrane

Controls what goes in and out of the cell

Endoplasic Reticulum (ER)

Smooth: makes fats and sugars Rough: makes proteins

Ribsomes

Makes proteins

Golgi apparatus

Package and ships cell products

Lysosomesy

Breaks down cell waste

Mitochondria

Makes energy for the cell

Nucleus

Stores DNA

Cytoplasm

Allows movement in the cell

Cilia

Allows movement of the cell

Chloroplast (plants)

Site of photosynthesis

Vacuola (plants)

Stores food and water

Cell Wall

Extra protection for cells

Dependent Variable

What you measure

Independent Variable

Always what you change

Controls Group

Does not receive the treatment

Experimental Group

Receives treatment

8 charecteristics of life

Obtain energy, reproduction, evolution, cells, DNA, growth/developement, response to stimulus, homeostasis

Homeoestasis

The way organism maintain a stable internal environment