One strand of a single DNA helix is labeled red while the other strand of the same DNA helix is labeled blue. This double helix DNA is replicated through the process of semi-conservative replication. Note that a completely newly synthesized strand of DNA will be white. Predict what the colors […]

Environmental Effects on Microbes 1. Describe the effect of higher and lower than optimal temperatures on bacterial enzymes and membrane lipids 2. Describe the effect of higher than optimal pH on molecule solubility and enzyme activity. Which pH do most bacteria prefer? 3. Describe the effect of a hypertonic environment […]

Q1. The agarose gel was prepared for you. How much agarose is needed to prepare a gel containing 0.7 percent agarose in 35 mL of buffer (note: agarose is a powder; what are the units of the % sign). Show the calculations. Q2. 1. Write down an equation for the […]

Q. A 27-year old white female presented herself at her local physician on August 15. On physical exam, patient had a fever of 38.5C. She appeared fatigued, had tender abdomen and complained of headache, stiff neck and backache with diarrhea. The physician noted an irregular heartbeat. The patient complained of […]