BIO-322 Test 1 MC Questions and Correct Answers

An element has an atomic number of 8. This tells us: the number of protons in the nucleus is ______, the number of total electrons outside the nucleus is _______, and the number of electrons in the outermost (valence) shell is ________. 8,8,6 Carbon has an atomic mass of 12 g/mol and an atomic number of 6. This indicates that carbon forms _____ covalent bonds. 4 The building blocks of proteins are _______________ and they are linked together with ______________ bonds. amino acids, peptide Which of the following is the correct order for the bonds decreasing in strength? covalent --> ionic --> hydrogen --> van der Waals Cofactors: are ions or small functional groups, are required for an active binding site Protein folding depends on: temperature, pH, salt concentration Glycoproteins consist of _____________________ proteins and carbohydrates The property of a protein to bind to only one kind of molecule or group of closely related molecules is called _________________ specificity Using this equation predict what would happen if the pH of the blood decreased: CO2 + H2O <--> H2CO3 <--> H+ + HCO3- the increase in H+ concentration would lead to the removal of excess CO2 by the lungs Table salt (NaCl) is _____________. What happens when it is placed in water? hydrophilic; ionic bonds between Na+ and Cl- are broken and they each become surrounded by water molecules Which of the following is most likely to be liquid at room temperature? polyunsaturated fats A polypeptide chain is placed in an aqueous solution and spontaneously undergoes a conformational change to a 3D shape. Which of the followin