Anatomy is that branch of biology that studies the structures and positioning of parts of an organism and the whole organism. it is interested in just how the structures are and has nothing to do with the functioning.

Approximations in mathematics is simply the idea or concept of taking the closest number to a given real value. For example, 2,100 is approximately 2,000. 

This is sometimes helpful in writing the numbers in a more comprehensive (in the case of whole numbers) or shorter (in the case of decimals) way.

Approximations are done by "rounding off" certain numbers according to precise rules. Rounding off could either be rounding down or rounding up.

This is a condition where a person sees blurry because of poor refraction of light at either the conea or lens or poor curvature at the retina.  

This is the branch of Biology that studies the chemicals and chemical reactions that take place in living organisms.

Biology is the study of living things. Biology originates from two greek words "Bios" which means life and "logos" which means study. Hence, biology can also be etymologically defined as "the study of life". For this reason, biology is interested in everything that possesses the characteristics of living things.

Botany is that branch of Biology that studies plants only.

These are organic molecules made up of carbon hydrogen and oxygen only in the ratio 1:2:1 via the formula (CH2O)n where n must be a whole number greater than or equal to 3.

We can thence conclude that the simplest sugar or carbohydrate is a 3-carbon sugar (triglyceraldehyde).

Sugars can be classified according the number of subunits they have into monosaccharides, disaccharides, oligosaccharides and polysaccharides. They can also be classified according to the type of carbonyl group they carry: aldosugars and ketosugars

A cell type is a distinct morphological or functional form of a cell. Some cell types are progenitors of other cells. Such are generally termed as pluripotent. However other cell types may just mature into a specific form. A cell type can however change into another type. This is referred to as cell differentiation.

This is a situation where a cell type develops certains features and parts that make it more specific to a particular structure and function from it's preceding form.

Chemistry is the study of the composition, structure, nature and reaction that exist within and between matter. It is therefore a nature science.

Chromosomes are thred-like structure found in the nucleus of cells and are made up of protein and a DNA molecule. Chromosomes are actually DNA molecules that have coiled up to form a denser structure. A chromosome is observed to have two "fingers" called sister chromatids, attached to each other at the centromere.

This is the branch of biology that studies the cell.

It is interested in the origin, life and nature of the cell. It sees the cell as the most basic form of life.

The cytosol is an aqueous component of a cell cytoplasm within which the cell organelles and particles are suspended.