Dietary proteins are the source of non-essential amino acids. True or false?

Which of these is an alkaloid?

Which of these are biocatalysts?

What percentage of the total cellular mass is nucleic acids?

In which part of the starch chain is iodine incorporated?

An amino acid is a substituted __

Velocity of an enzymatic reaction keeps on increasing with an increase in substrate concentration. True or false?

Which of these makes up the cell membrane?