A key precursor in the synthesis of aromatic amino acids (tryptophan, tyrosine and phenylalanine) is ________.

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#Question id: 4620

#XL - T Zoology

The upper forelimbs of humans and bats have fairly similar skeletal structures, whereas the corresponding bones in whales have very different shapes and proportions. However, genetic data suggest that all three kinds of organisms diverged from a common ancestor at about the same time. Which of the following is the most likely explanation for these data?

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#Question id: 16487

#XL - R Botany

Few limitations regarding organ culture 

It can be maintained only for a few months

Not suitable for biochemical and molecular analyses

For each study, fresh organ cultures have to be initiated

It denatures very easily

Which of the above statements are correct? 

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#Question id: 10672

#XL - T Zoology

Which of the following is incorrect match of protective strategy done by organism?

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#Question id: 5265

#XL - S Microbiology

The mechanism by which genes are transferred into bacteria via viruses is called

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#Question id: 371

#XL - Q Biochemistry

How many milliliters of a 2.0 M solution of boric acid must be added to 600 mL of a solution of 10 mM sodium borate in order for the pH to be 9.45? (pKa of boric acid = 9.24)