1 Quaternary Structure-refers to the structure of a protein macromolecule formed by interactions between multiple polypeptide chains. 2  Each polypeptide chain is referred to as a subunit. 3  Proteins with quaternary structure may consist of more than one of the same type of protein subunit.
1 Set the plant in a water-proof container to protect your furniture. 2  Water the plant thoroughly when the soil surface is dry to the touch. 3  Discard any excess water which remains in the saucer after 10 minutes. 4  The bright colour of the bracts will remain longer if temperatures do not exceed 22Â°C.
Step 3. Water a mounted staghorn fern, once the medium has completely dried, by dipping the fern's root ball in a bucket of water for 15 minutes. Let the fern wilt slightly if you are unable to determine the moisture level in the medium.ater a mounted staghorn fern, once the medium has completely dried, by dipping the fern's root ball in a bucket of water for 15 minutes. Let the fern wilt slightly if you are unable to determine the moisture level in the medium.