Five graduate students prepare extracts from 5 different tissues. Each student measures the total amount of alcohol dehydrogenase and the total amount of protein in his or her extract. Which extract has the highest specific activity?
extract Total protein(mg) Total alcohol dehydrogenase activity (units)
A 300 60,000
B 200 80,000
C 3,000 90,000
D 5,000 100,000
E 1,000 200,000

B

Explanation:

If you convert all the options to standard form and compare the relative exponents and values, one can now decide which one is the highest.

A quick comparison shows that option B. This value thus represents the highest activity among the options listed in the question. Hence the answer provided above.

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.