Nucleic Acids – Section 1
1. Because DNA is a highly charged polyanion, its stability to heat denaturation A. does not depend on…
Membrane Structure and Functions – Section 1
1. Cholesterol is somewhat amphipathic due to A. the single hydroxyl along with the hydrocarbon nature of the…
Immunological Techniques – Section 1
1. Agarose gel electrophoresis and pulsed field gel electrophoresis may be used to resolve respectively A. 2000 kb…
Anti Bodies – Section 1
1. Which of those immunoglobulin classes is mainly found in external secretions? A. Ig A B. Ig D…
Immune System – Section 1
1. Lack of reaction to our own human leukocyte antigens (HLAs) is known as? A. autoimmunity B. complement…
Allosteric Effects – Section 1
1. The conformational changes from the T to the R state is initiated by A. binding of oxygen…
Protein Purification – Section 1
1. During successful purification scheme, this may be expected that the A. specific activity increases B. specific activity…
Thermodynamics and Free Energy – Section 1
1. During the unfolding reaction of a helix, breakage of each hydrogen bond requires about 2kJ/mol. This implies…
Structure and Properties of Amino Acids – Section 1
1. When the amino acid alanine (R-group is CH3) is added to a solution with a pH of 7.3,…
Water, pH and Macromolecules – Section 1
1. Which of the following organic groups are found in naturally occurring amino acids? A. Guanidinium ion B.…