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Science 2012
Semester Test
| Question | Answer |
|---|---|
| Inference | observing something and making an assumption about your observation |
| Unbiased | not having a strong opinion towards something |
| Hypothesis | a prediction that can be tested |
| Dependent Variable | the object that reacts in an experiment |
| Dichotomous Key | a tool used to identift objects |
| Cell | smallest unit of any organism that can work alone |
| Tissue | a group of cells working together |
| Organ System | a group of organs working towards a common goal |
| Organ | a group of tissues working together |
| Organism | an individual life form |
| Unicellular | organism with only one cell and classified as a prokaryote |
| Multicellular | organism with many cell types, has a nucleus in each cell, and classified as a eukaryote |
| Eukaryote | has a nucleus, has linear DNA, has cytoplasm filled with membrane-bound organelles |
| Prokaryote | has no nucleus, circular DNA, no membrane-bound organelles |
| Cilia | tiny,hair-like structures that help protists move |
| Flagella | a whip-like stucture that help protists move |
| Binomial Nomenclature | two word naming system used to name organisms |
| Dominant Traits | unattached earlobes, dimples |
| Recessive Traits | uni-brow, hitchhiker's thumb |
| Selective Breeding | the process of breeding plants and animals for specific genetic traits |
| Vestigial | organs remaining or surviving in an imperfect form |
| Embroyology | the study of the development of the embryo to the fetus stage |
| Homologous Trait | ant characteristic derived from a common ancestor |
| Analogous | similar funtion but having a different evolutionary orgin |
| Proton | the part of the atom that has a positive charge |
| Electron | a part of the atom that has a negative charge |
| Atomic Number | equals the number of protons |
| Mass Number | number of protons and neutrons |