Exercise: Enzymes, Temperature, and pH Data Table: Enzymes and Temperature. Lactase Tube Temperature (°C) Time (minutes) Glucose Concentration     5 minutes 100 Cold 5 10 minutes 100 15 minutes 100 20 minutes 100 Room 18 5 minutes 500 10 minutes 250 15 minutes 500 20 minutes 500 Hot 103 […]

A 6 month-old male infant is admitted to the hospital with diagnosis of recurrent pneumonia. His vital signs on admission: Respiratory rate = 50 /min; heart rate = 170 beats/min; temperature – 102° F. Substernal retractions are prominent. Lung auscultation: bilateral wheezes and rhonchi. Medical history: this is a third […]

Suppose that a population of forest dwellers is predominantly green, but about 25% of each new generation of children are a lighter color – yellow or pale green. The lighter colored beings have to be careful, as they are more easily seen and eaten by predators! How can we explain […]

Q. 1. What are six major areas into which genetic research has been focused to augment plant growth-promoting activity of bacterial strains? 2. What is the general name for the group of bacteria that fix nitrogen in the nodules of legumes? What is the commonly used assay for nitrogenase? 3. […]