1. 1-3 Studying Life

2. Controlled experiments
Experimental design
Responding variable
Results/data
theory
begin with
is followed by
tested by
include
Used to evaluate
Concept Map 1-2
Hypothesis formation
A problem
May become
Controlled experiments
Controlled var.
Manipulated variables
Make up
Used to draw
conclusions

3. Characteristics of Living Things
Section 1-3
Characteristic
Examples
Living things are made up of units called cells.
Many microorganisms consist of only a single cell. Animals and trees are multicellular.
Living things reproduce.
Maple trees reproduce sexually. A hydra can reproduce asexually by budding.
Living things are based on a universal genetic code. DNA
All living things share the same basic chemistry. A,T,G,C
Living things grow and develop.
Flies begin life as eggs, then become maggots, and then become adult flies.
Living things obtain and use materials and energy. METABOLISM
Plants obtain their energy from sunlight. Animals obtain their energy from the food they eat.
Living things respond to their environment.
Bird fly south in winter.
Living things maintain a stable internal environment. HOMEOSTASIS
Body discards wastes to make keep body stable.
Taken as a group, living things change over time. EVOLUTION
Bacterial resistance to antibiotics.
Go to Section:

4. Branches of Biology – Levels of Organization
Figure 1-21 Levels of Organization continued
Branches of Biology – Levels of Organization
Section 1-3
Organism
Individual living
thing
Bison
Tissues, organs,
and organ systems
Groups of
Cells
Nervous tissue
Brain
Nervous system
Smallest functional
unit of life
Cells
Nerve cell
Groups of atoms;
smallest unit of
most chemical
compounds
Molecules
Water
DNA
Go to Section:

5. Levels of Organization (cont)
Figure Levels of Organization
Levels of Organization (cont)
Section 1-3
Biosphere
The part of Earth
that contains all
ecosystems
Biosphere
Ecosystem
Community and
its nonliving
surroundings
Hawk, snake, bison, prairie dog, grass, stream, rocks, air
Community
Populations that
live together in a
defined area
Hawk, snake, bison, prairie dog, grass
Population
Group of
organisms of one
type that live in
the same area
Bison herd
Go to Section:

6. Assignment
Chapter 1 review page 31
(1,2,3,4,5,6,7,8,9, 12,13,15,16,18,19,20)