Transcript Document 612371

Unity and Diversity
of Life
Regents Biology
What
characteristics
do living
creatures have
in common?
2007-2008
Living creatures are ORGANIZED
 All made of the same collection of
chemicals, but we are organized as…

molecules
 proteins, fats, carbohydrates, nucleic acids
carbohydrates
proteins
DNA
Living creatures are ORGANIZED
 All made of the same collection of
chemicals, but we are organized as…

organelles & cells
 plant cells & animal cells
plant cell
animal cell
Living creatures are ORGANIZED
 All made of the same collection of
chemicals, but we are organized as…

Tissues & organs & organ systems
 respiratory, circulatory, digestive, etc.
Living creatures RESPOND
 Respond to internal changes

Homeostasis
 maintaining balanced conditions inside the
body
 Respond to external changes
Living creatures use ENERGY
 Metabolism

all the reactions your body performs to
make & use energy
 eating & digestion & elimination of waste
 synthesis = building reactions
 cellular respiration = making energy
mitochondria
Living creatures GROW & DEVELOP
 Change over an individual’s life time
get bigger
 mature

 so they can reproduce
Living creatures REPRODUCE
 Make the next generation
Living creatures perform Life
Processes
We can organize the life processes using a pneumonic
device. Huh?
T-Transport (move materials in a body/cell)
R-Respiration (Transforming food into Energy)
R-Regulation (Maintain internal balance-Homeostasis)
R-Reproduction (Make more cells/organisms)
N-Nutrition (Obtaining food)
E-Excretion (To remove metabolic waste)
S-Synthesis (to make complex from simple)
G-Growth (To get larger)
Don’t be a Dodo…
Ask Questions!!
Regents Biology
2007-2008
Essential Characteristics
Conserved
Genetic Code
Central Dogma
Watson
Crick
Metabolism
Glycolysis
Krebs Cycle
Oxidative Phosphorylation
Anaerobic Respiration
Aerobic Respiration
Eukaryotes