Biological Themes Evolution

species change over time adaptations phylogeny (evolutionary history)

Reproduction and inheritance DNA contains hereditary info. Genes are a short segment of DNA that code for a trait

asexual v. sexual reproduction

Biological Themes

Development zygote becoming a mature organism

Structure and function morphology and anatomy

Energy relationships autotrophs v. heterotrophs

Biological Themes

Ecology interdependence of organisms

Science and society bioethics

Characteristics of Life

All living things are composed of one or more cells Unicellular vs. Multicellular Unicellular – organism made up of

one cell Multicellular – organism made up

for 2 or more cells

Euglena

7 Properties of Life

Cellular Organization atoms (molecular) Cellular (cell, tissue, organ, organ

system, organism) Metabolism (Energy)

for growth, maintenance, repair

7 Properties of Life Respond to the environment

stimuli and responses Growth and Development

cell division cell enlargement

Reproduction species survival

7 Properties of Life

Homeostasis Ability to maintain an internal balance

Heredity and Adaptations Passing of genetic information from

parent to offspring during reproduction

Diversity and Unity

Diversity Variety of living organisms

Unity Features that living things have in common

(characteristics of life)

Organizing Life

DomainsBacteria (unicellular)Archaea (unicellular)Eukarya (uni and multicellular)

KingdomsEukaryaPlants, Animals, Fungi,

Protists

Scientific Processes Observing

using senses to perceive objects and events

Hypothesis formation educated guess that can be

tested with an experiment predicting (if-then format) the

results

Controlled Experiments

Two groups control and experimental

Variables independent (what is being

manipulated; only present within the experimental group)

dependent (what is measured or observed)

Scientific Method Logical method to solve a problem1. define the problem2. collect background info3. Form a hypothesis4. experimental design 5. data collection6. results, conclusions7. report findings Data

quantitative vs. qualitative

Theory vs. Law

Theory explains why things happen a hypothesis that has stood the

“test of time” Law

general statement that describes a wide variety of phenomena