Humans maintain a nearly constant level of hemoglobin by continually synthesizing and degrading it. This is an example of a(n):

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#Question id: 2667

#Introduction to Biochemistry

A regulatory protein that attracts RNA polymerase to its promoter is an example of what type of regulation?

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#Question id: 27068

#Bioorganic Chemistry and Metabolites

Isoleucine and Threonine have two chiral carbons so exists in multiple RS configuration, choose the correct option regarding the given fig.

1. a is D-threonine is (2S, 3S) threonine

2. b is L-threonine is (2R,3S) threonine

3. a is L-threonine is (2S, 3R) threonine

4. b is D-threonine is (2R,3S) threonine

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#Question id: 27066

#Bioorganic Chemistry and Metabolites

Determine R and S Configurations On A Fischer Projection given below 

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#Question id: 27376

#Introduction to Biochemistry

The number of neutrons is equal to

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#Question id: 50

#Introduction to Biochemistry

The enzyme fumarase catalyzes the reverse hydration of fumaric acid to l-malate, but it will not catalyze the hydration of maleic acid, the cis isomer of fumaric acid. This is an example of: