5 Written questions
5 Matching questions
- Do the functional groups have an impact on life? Give an example.
- Why is carbon the basic building element of life?
- What is a buffer?
- Draw functional group structure and give molecular formula for: Amino.
- What scale is pH?
- a Yes. Ex: tiny tag from a functional group determines whether we are males or females
- b Amino (-NH₂) (acts as a base, amino acids); N single bonded to 2 H's
- c A log scale. Each change is 10 times. So when we go up or down, we add a zero to the end.
- 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
- e Because it can bond to 4 other atoms (tetravalent - 4 valence electrons)
5 Multiple choice questions
- Hydrophilic - attracted to water; polar or ionic; has charge
Hydrophobic - repels water; nonpolar; no charge
- Hydroxyl, Carbonyl, Carboxyl, Amino, Sulfhydryl, Phosphate, and Methyl
- Carbon and Hydrogen
- Carboxyl (-COOH) acidic properties, components of many biologically important molecules; C double bonded to O and single to OH
Ex: Formic acid or acetic acid
5 True/False questions
What are primary producers? → Fix C from atmospheric CO₂ (ex: Plants w/ photosynthesis)
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
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
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)
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