Many organic substances are negatively charged e.g., acetic acid, while others are positively charged e.g., ammonium ion. An amino acid under certain conditions would have both positive and negative charges simultaneously in the same molecule. Such a form of amino acid is called
1. Positively charged form
2. Negatively charged form
3. Neutral form
4. Zwitter ionic form

The metal ion that acts as a co-factor for both alcohol dehydrogenase and carbonic anhydrase is:

Consider the following statements:

 
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct

Enzymes that catalyze removal of groups from substrates by mechanisms other than hydrolysis leaving double bonds are:

The substrate concentration at which the enzyme catalyzed reaction achieves ½ Vmax is its ____ value.

In the absence of carbonic anhydrase in the human body, the reaction between carbon dioxide and water leading to the formation of carbonic acid:
1. Will not occur
2. Will slow down considerably
3. Will get faster
4. Will remain unaltered

At each step of ascent, the helical strand of DNA turns

Inulin is a:
1. Disaccharide containing two galactose
2. Disaccharide containing fructose and galactose
3. Polymer of fructose
4. Polysaccharide used in microbial culture