BIO 201 EXAM 1 UB QUESTIONS AND ANSWERS

What composes an atom? - ANSWER Protons, Neutrons, electrons



Mass number = X+Y - ANSWER Number of Protons, Number of Netons



Name the chemical bonds, from strongest to weakest. (5) - ANSWER Covalent->Ionic-
>Hydrogen->Hydrophobic->Van der Waals



Define electronegativity - ANSWER Attraction force that an atomic nucleus exerts on
electrons



What is an ion composed of? - ANSWER Cation, Anions



What is a complex ion? - ANSWER Covalently bonded atom that carries a charge



Polar =? - ANSWER Hydrophillic



Non-polar=? - ANSWER Hydrophobic



What does Acid do? - ANSWER Releases H+ (protons)



What does Base does? - ANSWER Accepts H+ ions



What are Living organisms made out of? - ANSWER Proteins, Carbohydrates, Lipids, Nucleic
Acid



What does Proteins consist of? - ANSWER combination 20 amino acids