A Reflectional Symmetry is a type of symmetry in which one half of the object is the mirror image of the other. 1  A figure may have both horizontal and vertical lines of reflection. 2  The alphabet V has reflectional symmetry about a vertical line of reflection.  The hexagon has reflectional symmetry about both horizontal and vertical lines of reflection.
RENAL REGULATION OF BICARBONATE. The kidneys regulate the [HC03-] by. 1) conserving or excreting the HC0 3 - present in the glomerular ultrafiltrate; 2) producing new HCO3- which enters the body fluids as the kidneys excrete ammonium salts and titratable acids (this sum is called net acid) in the urine.
1 Conjugate Acids and Bases: When an acid dissociates e.g. carbonic acid (H2CO3) it automatically produces a base, in this case a bicarbonate ion (HCO3-). 2  The same is true when a base accepts a hydrogen ion.3  These are called conjugate acids and bases. Conjugate Acids and Bases: When an acid dissociates e.g. carbonic acid (H2CO3) it automatically produces a base, in this case a bicarbonate ion (HCO3-). 2  The same is true when a base accepts a hydrogen ion. 3  These are called conjugate acids and bases.