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1) Take around 15 index cards and a flashlight which is opaque on all the sides (so that the light shines only through the front) into a very dark room. After keeping all the 15 cards over beam of light, slowly take out the cards single at a time till […]

The hydrolysis of pyrophosphate to orthophosphate is important in driving forward biosynthetic reactions, such as the synthesis of DNA. This hydrolytic reaction is catalyzed in E. coli by a pyrophosphate that has a mass of 120 kd and consists of six identical subunits. For this enzyme, a unit of activity […]

1. A human population increasing at the rate of 0.8%/yr (Ch. 36A, Population Ecology) would double in size every a. 100 years.b. 87-88 years.c. 70 years.d. 35 years.e. 77-78 years. 2. Desert plant species that look similar to each other today, but are actually unrelated (history of origins, Ch. 15) […]

hypercholesterlemia is a genetic diease that affects 1 out of 500 people worldwide. this is more that one genetic cause of the disease. Class 1 is described as an autosome dominant disease. those affected have cholesterol levels>250 as children and >300 as adults. homozygotes have cholesterol levelts of >600 as […]