Lecture 2 Flashcards
Pages 3 and 4; August 21
DNA
Deoxyribonucleic Acid
(DNA) Molecule of Inheritance
Genes
DNA does what ?
Self replicates
What shape is DNA
Double Helix
4 “Letters” for bonding
Adenine, Thymine, Cytosine, Guanine
Which DNA letters pair with each other
A with T ; C with G
DNA ____ in new enviorments
Persists
Chromosomes
Highly packaged DNA molecule
Negative Feedback plus example
Increases something, something decreases to maintain balance ( sweating)
Positive Feedback plus example
End product speeds up its own production ( oxytocin increases during child labor contractions)
______ # of species
1.8M
Where can you find new species?
Poles, rain forest, ocean, bacteria
3 Domains of Life
Domain Bacteria ; Domain Archaea ; Domain Eukarya
Domain Bacteria example
Bacteria, E.Coli , salmonella
Domain Archaea example
Ancient bacteria ; extreme enviorments ( salty, hot )
Domain Eukarya
Humans, plants, protists, fungi
Protists
Algae or protozin
Charles Darwin =
NATURAL SELECTION
Book C.D. made
” On the origin of species…”
Charles Darwin said this phrase about animals changing over time and improving
Descent with modification
Science is a _____
Process
Scientific Method Steps
Observe, Critical Question, Hypothesis, experiment, Results and Data + Analyze,
Theory
Hypothesis is proven true numerous times
Why is psudosciene + Junk sciene BS?
Nothing but observational, NO EXPERIMENT, no scietific method
Psudosciene
UFO’s , aliens, ghosts, bigfoot, etc
Junk Science
Health marketing, pills, supps, etc
How to filter bad science ?
Consider the source
Basic vs Applied research
Sake of gaining knowledge vs solving a problem
