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Welcome to the Molecular and Cellular Biology portal. Molecular biology is the study of biology at the molecular level. The field overlaps with other areas of biology and chemistry, particularly genetics and biochemistry. Cell biology studies the properties of cells including their physiological properties, their structure, the organelles they contain, interactions with their environment, their life cycle, division and death. Molecular and cellular biology are interrelated, since most of the properties and functions of a cell can be described at the molecular level.
Molecular and Cellular Biology encompass many biological fields including: Biotechnology, Developmental biology, Genetics and Microbiology.
Enzymes are proteins that catalyze (i.e. accelerate) chemical reactions. Enzymes are biochemical catalysts. In these reactions, the molecules at the beginning of the process are called substrates, and the enzyme converts these into different set of molecule(s), the product(s). Almost all processes in the cell need enzymes in order to occur at significant rates. Since enzymes are extremely selective for their substrates and speed up only a few reactions from among many possibilities, the set of enzymes made in a cell determines the biochemistry and signal transduction that occur in a cell.
Overview of C4 carbon fixation, one of three biochemical
mechanisms, along with C3 and CAM
photosynthesis, functioning in land plants to "fix" carbon dioxide
(binding the gaseous molecules to dissolved compounds inside the
plant) for sugar production
through photosynthesis.
Rosalind Elsie Franklin (25 July 1920 – 16 April 1958) was an English physical chemist and crystallographer who made important contributions to the understanding of the fine structures of DNA, viruses, coal and graphite. Franklin is best known for her contribution to the discovery of the structure of DNA in 1953. In the years following, she led pioneering work on the tobacco mosaic and polio viruses. She died in 1958 of cancer of the ovary.
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| Gene expression The Molecular and Cellular Biology WikiProject's current
Collaboration of the Month article is Gene
expression. |
Branches of Molecular and Cellular Biology
| “ | To doubt everything or to believe everything are two equally convenient solutions; both dispense with the necessity of reflection. | ” |
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| Microbiology | Molecular biology | Biological techniques and tools | |
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