BIO 105 Exam 1 Review with Complete and Certified Solutions

BIO 105 Exam 1 Review with Complete and Certified Solutions Define Biology study of living things Know the steps in the scientific method 1. Observation 2. Question 3. Hypothesis 4. Experiment 5. Analyze 6. Hypothesis- True 7. Report results *6. Hypothesis-Fasle *7. Revise hypothesis Recognize what science can and cannot investigate it can investigate reasoning: why, how, what... cannot investigate right or wrong What special aspect determines an element's properties number of protons and neutrons Know how to determine the number of protons, electrons, and neutrons in an element by its entry in the periodic table Atomic # (top)- protons Atomic mass (bottom)- sum of protons & neutrons Period (columns)- # of shells (2 in first, up to 8 in others) Group (rows)- # of electrons in outer shell Know what an isotope is atoms of the same element that diiffer in number of neutrons Know the 4 major and 4 trace elements important to life Carbon, oxygen, hydrogen, nitrogen Calcium, phosphorus, potassium, sulfur Know what a valence is outer shell Know the properties of covalent bonds when 2 atoms share electrons in order to have a completed outer shell How they form (covalent) atoms sharing valence shell electrons to balance The different kinds there are (covalent) single, double, triple Know the example of a triple bond (Triyne) and what it does share 3 electrons in outer shells Know what a polar covalent bond is one