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5 Written questions

5 Matching questions

  1. Do the functional groups have an impact on life? Give an example.
  2. Why is carbon the basic building element of life?
  3. What is a buffer?
  4. Draw functional group structure and give molecular formula for: Amino.
    Example?
  5. What scale is pH?
  1. a Yes. Ex: tiny tag from a functional group determines whether we are males or females
  2. b Amino (-NH₂) (acts as a base, amino acids); N single bonded to 2 H's

    H
    |
    −N
    |
    H

    Ex: Glycine
  3. c A log scale. Each change is 10 times. So when we go up or down, we add a zero to the end.
  4. d Buffers are molecules that resist change in pH; they either release H⁺ to lower the pH or take up H⁺ to raise the pH
  5. e Because it can bond to 4 other atoms (tetravalent - 4 valence electrons)

5 Multiple choice questions

  1. Hydrophilic - attracted to water; polar or ionic; has charge
    Hydrophobic - repels water; nonpolar; no charge
  2. Hydroxyl, Carbonyl, Carboxyl, Amino, Sulfhydryl, Phosphate, and Methyl
  3. Carbon and Hydrogen
  4. YES!
  5. Carboxyl (-COOH) acidic properties, components of many biologically important molecules; C double bonded to O and single to OH

    O

    −C
    |
    OH

    Ex: Formic acid or acetic acid

5 True/False questions

  1. What are primary producers?Fix C from atmospheric CO₂ (ex: Plants w/ photosynthesis)

          

  2. Draw functional group structure and give molecular formula for: Phosphate.
    Example?
    Hydroxyl (polar, form hydrogen bonds, polar solvents)
    −OH (may be written HO-)
    Ex: Alcohols, such as Ethanol

          

  3. What are the different types of isomers (changes) and how are they different?1.) Structural - changes structural form; same formula, different structure
    2.) Geometric - differ in spatial arrangement due to inflexibility of double bond (two types: cis and trans) 3.) Enantiomers - mirror images of each other

          

  4. What is a hydrocarbon? Polar or non-polar?Organic molecules composed solely of Carbon and Hydrogen; Nonpolar covalent bond so they resist/repel water (ex: fat)

          

  5. What is heat of vaporization? How does it relate to evaporative cooling? What affect does it have on living organisms?Heat required to convert 1g of liquid into a gaseous state (high); Evaporative cooling is the warmest molecules of a liquid leave as a gas; allows us to sweat, or release heat so we don't die