What is the three-dimensional structure of an entire protein called?

Egg albumin is an example of . . . . . . .

The most abundant protein in the biosphere is

Which of the following statement$(s)$ is/are true?
$(i)$ All amino acids contain one chiral centre.
$(ii)$ Some amino acids contain one, while some contain more chiral centres or even no chiral centre.
$(iii)$ All amino acids in proteins have $L$-configuration.
$(iv)$ All amino acids found in proteins have $1^{\circ}$ amino group.

Find out and make a list of proteins used as therapeutic agents. Find other applications of proteins (e.g.,cosmetics,etc.).

Molecules that bear charged groups of opposite polarity are known as $:-$