Cell biology

Cell biology

The study of cell structure, physiological properties, interactions with the environment and life cycle.

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Cell biology

umbilical cord

Biology; Cell biology

The structure that connects the placenta and the embryo; contains the umbilical arteries and the umbilical vein.

channels

Biology; Cell biology

Transport proteins that act as gates to control the movement of sodium and potassium ions across the plasma membrane of a nerve cell.

Type of fossil preservation where the original material of the fossil has decayed but has left an impression in the surrounding sediments. Molds are often filled with a different material, producing ...

ileum

Biology; Cell biology

The third and last section of the small intestine.

selective breeding

Biology; Cell biology

The selection of individuals with desirable traits for use in breeding. Over many generations, the practice leads to the development of strains with the desired characteristics.

primary structure

Biology; Cell biology

The sequence of amino acids in a protein.

reabsorption

Biology; Cell biology

The return to the blood of most of the water, sodium, amino acids, and sugar that were removed during filtration; occurs mainly in the proximal tubule of the nephron.