An experiment of Anfinsen on ribonuclease A (RNase A) showed that proteins can be denatured reversibly by 2-mercaptoethanol and 8 M urea. The protein must therefore renature spontaneously;

a) Remove mercaptoethanol and then removal of the urea

b) Removal of the mercaptoethanol allows the protein to re-form disulfide bonds in the presence of oxygen and then removal of the urea

c) Removal of the denaturant (urea) and reductant (mercaptoethanol) allows the protein to renature and re-form disulfide bonds in the absence of oxygen

d) Adding a small amount of mercaptoethanol to the scrambled protein in the absence of O2 catalyzes its conversion to the active enzyme

Which one of the following steps will leads to regaining of the full activity of ribonuclease A (RNase A)

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#Question id: 4179

#Unit 3. Fundamental Processes

What is the 5ʹ → 3ʹ anticodon for an amino acid with the codon CAG?

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#Question id: 23035

#Unit 12. Applied Biology

What kind of bacteria can oxidize methane to carbon dioxide via Methanol, Formaldehyde?

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#Question id: 3422

#Unit 11. Evolution and Behavior

Micro-evolution is the term used for changes in allele frequencies that occur over time.

A) It gives rise to changes in the gene pool, which results in few changes in the same species

B) It occur above species level

C) New addition, deletion in the genetic structure, resulting in the formation of new species

D) It changes occurs over short time scales

Which of the following combinations is correct?

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#Question id: 18588

#Unit 7. System Physiology – Animal

The first step in creating a stress management plan is ______.

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#Question id: 2273

#Unit 2. Cellular Organization

The bacterial cell wall is composed of