5 Written questions
5 Matching questions
- Distinguish between simple and complex carbohydrates.
- Compare the chemical composition of carbohydrates, lipids, proteins, and nucleic acid.
- Identify 2 types of macromolecules in which hydrogen bonds are important parts of the structure.
- An ionic bond forms when? A covalent bond forms when?
- Explain how electrons are distributed within the electron shell of atoms.
- a Simple: sugars include monosaccharaides, disaccharides; straight chains or rings.
Complex: polysaccharides are built of simple carbohydrates made of many bonded glucose molecules chains of sugars, cant digest.
- b Carbohydrates: C, H, O
Lipids: C, H, O (often P)
Protein: C, H, O, N, ( often S)
Nucleic acids: C, H, O , N , P
- c Ionic: ions with opposite electrical charges attract
Covalent: a chemical bond between atoms that share electrons.
- d Each electron shell can hold a limited # of electrons. The maximum number of electrons that each of the 1st three shells can hold for elements of atomic number 18 and under is ...1st shell ( close to the nucleus) 2 e-, second shell 8 e-, third shell 8 e-. More complex atoms may have as many as 18 e- in the 3rd shell.
- e Hydrogen bonding is important to Tertiary & Secondary protein structures.
5 Multiple choice questions
- Molecular: consists of the symbols of the elements in the molecule with numerical subscripts that indicate how many atoms of each element are present.
Structural: representation of the way atoms bond in a molecule.
- Primary, Secondary, Tertiary, Quaternary
- Because body functions result from cellular functions that in turn, result form chemical change
- tracks the number of decimal places in a hydrogen ion concentration without writing them out.
5 True/False questions
Where are electrons, protons, and neutrons located within an atom? → the nucleus of an atom.
Explain the difference between saturated & unsaturated fats. → Electrolyte: substance that ionizes in a water solution
Nonelectrolyte: organic compounds that dissolve in water, usually do not release ions.
What are the general difference between an organic molecule and an inorganic molecule? → Organic: compounds have carbon and hydrogen.
Inorganic: all other chemicals, chemicals that does not include both carbon and hydrogen atoms.
Explain why some atoms are chemically inert. → Synthesis: when 2 or more atoms, ions, or molecules bond to form a more complex structure A+B->AB
Decomposition: bonds of a reactant molecule break to form simpler molecules, atoms, or ions AB->A+B
Exchange: parts of 2 different types of molecular trade positions as bonds are broken and new are formed AB + CD-> AD+ BC
Reversible: product or products can change back to reactant or reactants A+B<-> AB
What is biochemistry? → Chemistry of living organisms, a field of life science.