## air is mainly a mixture of nitrogen and oxygen with a small amount of other gases such as argon and carbon dioxide. what property could you use to separate the gases

To separate the gases in the air, their density property can be used. Some gases present in the air have higher densities, other have...

## The dissociation constant for a previously uncharacterized racemic acid discovered in a meteor have been determined to be pk1=2.0, pk2=3.5, pk3=6.3, pk4=8.0, pk5=9.8, and pk7 = 10.9. What would be its approximate net charge on this amino acid at a pH of 2?

According to Henderson-Hasselbalch equation, pH = pKa+ log (α/1- α) Given pH =2 Calculate α = degree of dissociation = 1/ 10(pKa-pH) +1 Given...

## The dissociation constant for a previously uncharacterized racemic acid discovered in a meteor have been determined to be pk1=2.0, pk2=3.5, pk3=6.3, pk4=8.0, pk5=9.8, and pk7 = 10.9. A. What carboxyl or functional group would you expect to be associated with each dissociation?

ANSWER: pKa is the log of dissociation constant of an acid. Suppose an acid is HA. HA will dissociate to à H+ + A–...

## The major site for daily glucose consumption in human body is: a) Brain b) Skeletal muscles c) Kidney d) Liver

The correct answer is A (Brain). Please note that 75% glucose of human body is consumed by the brain daily, via aerobic pathways. Remainder...

## The ionic strength of 0.2M sodium hydrogen phosphate solution will be:

CSIR NET 2015 Ionic strength = ½ ∑(concentrations of ions * charge2) = ½   = ½ [0.4...

## Qs. Decode the given protein sequence: “WATER”. What is the overall charge present on this protein. a) 0 (neutral) b) +1 c) -1 d) +2

Ans. Please note that “W ” is the single letter code for “Tryptophan”, ‘A’ for “Alanine”, ‘T’ for “Threonine” , ‘E’ for “Glutamic acid”...

## Explain why tyrosine is classified as non-essential but most books actually call it a mis-classification

Ans: A non-essential amino acid is one which is synthesized in the body. Tyrosine is synthesized in the body from Phenylalanine, which is itself...