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Biology 1-H Final Exam Review

Chapter 1
Homeostasis- state in which physical and chemical aspects o internal environment are being maintained within ranges suitable for the cell activities
Steps of Scientific Method:
  1. Observation
  2. Research the Subject
  3. Hypothesis(If, Then)
  4. Test Hypothesis w/ experiment
  5. Record Data
  6. Draw a Conclusion
Important parts of Controlled Experiment-Dependent & Independent Variable
Variable because it could affect the whole experiment

Chapter 2
Basic Chemistry

Atomic Structure

Elements- One of the 103 known chemical substances that cannot be divided into simpler substances by chemical means. A substance whose atoms all have the same atomic number.

Ion- Atoms that possess a positive or negative charge due to the gain or loss of electrons.

Ionic Bond- a chemical bond in which one atom loses an electron to form a positive ion and the other atom gains an electron to form a negative ion.

Hydrogen Bond- a weak type of chemical bond formed when the slightly positive hydrogen atom of a polar covalent bond is attracted to the slightly negative atom of a polar covalent bond in another molecule; a common bond in organisms that has an attractive force between a hydrogen atom and another molecule.

Covalent Bond- a bond between two or more atoms that is provided by electrons that travel between the atoms nuclei, holding them together but keeping them a stable distance apart. sharing electrons between two or more atoms

Chapter 3
Organic Compounds Characteristics
    • Carbon atom(s) (basis for life)
    • Functional Group(s)
    • Covalently bonded
Proteins
Proteins are large molecules, and have monomers of amino acids. There are 20 different known kinds of amino acids, and they contain a carboxyl group, an amino group, and an "R" group. The "R" group is what makes each amino acid different. When Amino acids combine, they form a special bond called a peptide bond, and become a...
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