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.
1 You can put your poinsettia outdoors for the summer, but be sure to bring it back inside before temperatures drop into the 50s F.  Fall: (October) Poinsettias bloom in response to shorter days. For about 8-10 weeks prior to the desired bloom time, put your poinsettia in complete darkness for 12-15 hours per day.