< Cell Biologyâ | Cell types. The structures of two prokaryotic cells. The bacterium (shown at the top) is a heterotroph, an organism that eats other organisms. Cyanophytes are autotrophs, organisms that make their food without eating other organisms.
White stag. A white stag (or white hind for the female) is a white-colored red deer, explained by a condition known as leucism that causes its hair and skin to lose its natural colour. The white deer has played a prominent role in many cultures' mythology.
The American flag flying at half-mast in Buchenwald, Thuringia, Germany, on 19 April 1945. Half-mast or half-staff refers to a flag flying below the summit on a pole. In many countries this is seen as a symbol of respect, mourning, distress, or in some cases, a salute.