If you have a blood ketone meter, this is what the readings mean: 1  Light Ketosis: 0.5 mmol/L â 0.8 mmol/L. 2  Medium Ketosis: 0.9 mmol/L â 1.4 mmol/L. 3  Deep Ketosis (best for weight loss): 1.5 mmol/L â 3.0 mmol/ L.
(3) Symmetry, in the general sense, means the invariance of the structure of a mathematical or physical object with respect to transformations of the object. For example, the symmetry of the laws of the theory of relativity is determined by their invariance with respect to the Lorentz transformations.1) A symmetry, in the narrow sense, is a reflection with respect to a plane Î± in space or with respect to a line a in the plane. Such a symmetry is a transformation of space or the plane that takes every point M into a point Mâ such that the line segment MMâ is perpendicular to Î± or a and is divided in half by Î± or a.
Symmetry in biology. Symmetry in biology is the balanced distribution of duplicate body parts or shapes within the body of an organism. In nature and biology, symmetry is always approximate: for example plant leaves, while considered symmetrical, rarely match up exactly when folded in half. Symmetry creates a class of patterns in nature, where the near-repetition of the pattern element is by reflection or rotation.