 | Term | Definition |
| |
AIDS |
acquired immune defficiency system |
| |
AIDS symptoms |
Usual ingections become fatal |
| |
AZT |
first treatment for AIDS |
| |
HIV |
causative ingectious agent that attacks the immune cells continually evolves by mutations in DNA similar to the flu virus |
| |
Genetic engineering |
manipulating DNA in cells to improve health crops? |
| |
HGH |
controls growth made in a lab my inserting DNA sequence into bacteria |
| |
scientific method |
method of solving problems |
| |
control |
the standard against which the experimental factors are compared and possibly changed |
| |
Controlled experiment |
tests only one factor at a time keeps other variables constant |
| |
Independent variables |
the variations in an experiment |
| |
dependent variables |
the factors or variables that you measure as a result of independent variables |
| |
Theory |
explains current observations and predicts new ones conclusion proves true after repeated experientation |
| |
psuedoscience |
based on assumptions not verifiable by observation and experimentations |
| |
natural selection |
life evolves by survival and reproduction of organisms best suited to the enviorment by adaptations |
| |
variations |
small differences between members of a species |
| |
Lamarck |
theory of accquired characteristics being inherited his hypothises were proved false |
| |
Origin of life |
evidence from the space hubble telescope proved that the uni is expanding |
| |
Big Bang |
when all of the universes condensed matter exploded and was condensed by gravity into planets |
| |
the universe |
15 billion years old |
| |
Earth |
4.6 billion years old |
| |
First life forms |
could have been virus /prokaryote |
| |
methanogens |
anerobic bacteria that obtain energy from CO2 |
| |
earliest fossils are |
3.5 billion years old and prokaryotes |
| |
first eukaryote |
1.4 billion years ago |
| |
mitochondria |
synthesize ATP from 02 in cellular respiration |
| |
plastids |
synthesizes ATP from ight in photosynthesis |
