What is the ethical value of using a model organism, such as zebrafish for doing marine research on pathogens? The organism can prevent diseases from being transmitted from one species to another, thereby reducing fish mortality.

The organism is immune to all diseases, so the effectiveness of new treatments can be studied over long periods of time.

The organism produces chemicals that can be extracted for use as antibiotics, so they are economically important.

The organism shares its physiology with humans, so testing of new drugs can be done without hurting people.

airlines i think? or a cruise boat? does this work out for u? ?

answer: the correct option is d. enzyme

lactase and carbonic anhydrase are the examples of enzymes.

lactase is an enzyme, which is present in the small intestine of mammals. it in the digestion of the disaccharide, lactose ( milk sugar) by converting it into two monosachharide, which are glucose and galactose.

carbonic anhydrase is present in the red blood cells. this enzyme plays significant role in the transport of co₂. it in the conversion of co₂ and h₂o into carbonic acid, which is then dissociated into bicarbonate ions and hydrogen ions.