In honey bee nest building, the chosen cavity is cleaned and its surface is lined with

In honey bee nest building, the chosen cavity is cleaned and its surface is lined with propolis which is a substance the bees made by mixing plant resins, wax secreted from glands in their abdomens, and their saliva. Propilis has antibacterial properties which help protect the nest from harmful bacteria.

cats appear to have glowing cat eyes because the back of their eyeballs includes a special reflective surface called the tapetum lucidum. this lets them see better during the night, giving them a much better vision.

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme