Reverse transcriptase is the viral enzyme responsible for making a DNA copy of the RNA genome from a retrovirus. As such, it is technically known as an RNA-dependent DNA polymerase. This is opposite to the usual flow of genetic information from DNA to RNA to protein.
This means downhill sections of the ride may be faster, and uphill sections slower. 1  Easy: Under 10 mph. 2  Leisurely: 10-12 mph. 3  Steady: 12-14 mph.  Moderate: 14-16 1  mph. Brisk: 16-18 2  mph. Vigorous: 18- 20 3  mph. Strenuous: 20-22  mph. Super Strenuous: 22+ mph.
Seventy to 100 revolutions per minute is an ideal cadence for most cyclists. Riding a bike over short distances is simple and relaxing, but when you start putting many miles under your wheels or climbing steep hills it can be a tough workout. Maintaining an ideal pedaling speed helps to counteract the rigors of a long ride on your body. Cyclists refer to their pedaling speed as cadence.