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tree frog ch 1
Lab Manual
Lab Handouts
Science helps us create facts on how things work
Science progresses through inquiry
Biology is the sudy of life a any level, from molecules to global processes such as how life forms affect and are affected by global climate change
Levels of Organizaion:
-molecule: made of atoms, build cells
-cells: simples entty that has all the properties of life
-tissue: a group of cells with similar finction'-organ: a structure with 2 or more tissues that performs a specific functions within an organism
-organism: an individual, free-living enitity
-population: a group of many organisms of the smae specisies
-communiy: population ofdifferent species that interec in a given region
-ecosystem: a livin community and its environment
Evolution: change in properties of populations of organisms over teh course or generations
Ecology: study of the interactions etween organisms and their environment
-organismal ecology:
-population ecology
-community ecology
-ecosystem ecology
-landscape ecology
Foundations of modern biology
1. cell therory: cells are the basic sructurl units of all living organisms
destinct enities but are also teh building blocks of complex organisms
all cells come from preexisting cells
all cells are similar in chemical composition
2. evolution:
3. gene theory: lifes blueprint - all living organisms use the same code (universal triplet code)
a cells blueprint is contained within the genome
the genoe is the sum total of DNA molecules in a cell
DNA molecules are made of nucleotide subunits
throught the process transcription and translation the sequence of nucleotides can code different proteins
proteins are complex molecules
4 homeostasis:living organisms regulate heir internal environment
temperature, salt balance, nutrients, wste materials
5. behavior: organisms interact wih each other and the environemnt
conflict and cooperations have important consequences for living organisms
Sceintific Method
1. making observations
2. asking questions
3. forming hypothesis, or tentative asnwers to questions
4. making predictions based on the hypothesis
Hypothesis: educated guess
Theory: and explanation of related observations or events based upon proved hypotheses and verified pultuple times by detached groups of researchers
Cryptics coloration: comoflouge color i.e jaguar, zebra, etc
Aposematic coloration: bright colors warn predators