Which of the following is $NOT$ made of monosaccharides?

What are horns,nails,and hair made of?

Match the compounds of Column-$I$ with their function in Column-$II$.

Column-$I$	Column-$II$
$A$. Trypsin	$(i)$ Fights infectious agents
$B$. $GLUT$-$4$	$(ii)$ Is an intercellular ground substance
$C$. Collagen	$(iii)$ Works as an enzyme
$D$. Antibody	$(iv)$ Enables glucose transport into cells

In which solvent are proteins soluble?

Between which groups is a dipeptide bond formed?

Attempt titrating an amino acid against a weak base and discover the number of dissociating (ionizable) functional groups in the amino acid.