Oswald Avery used different types of enzymes in his experiments to denature molecules including proteins and DNA. This way, he c
ould determine which one was the "transforming principle". What was he able to conclude? A. DNase, which was used to degrade DNA, prevented transformation.
B. Neither protease or DNase was able to prevent transformation.
C. Enzymes that degraded the proteins, proteases, prevented transformation.
The correct answer is A. Oswald Avery applied several biochemical techniques to large cultures of bacteria in order to extract and purify the "transforming principle". Their experiments showed that most probably the "transforming principle" was DNA. One of the observations leading to this conclusion was that enzymes that degrade proteins or RNA (such ribonucleases) had no effect on the "transforming principle". On the contrary, enzymes degrading the DNA destroyed the extract's transforming capacity.
Crop rotation helps to maintain soil structure and nutrient levels. If you don't rotate crops, the soil in that field will inevitably begin to lose the nutrients plants need to grow.
A wind blowing would be the right solution, as it's not an example of which value and energy cycling's happening through living items. Mortal sitting vegetables involve energy transfer between diverse trophic levels.
