Fundamental problems faced by the protocells and their modern descendants include how to go from one phenotypic state to another; escape from a basin of attraction in the space of phenotypes; reconcile conflicting growth and survival strategies (and ther
The first of these fundamental problems is how to generate reproducible, coherent phenotypes from a large number of effectively different molecules. In modern cells, this number runs into thousands - if not millions –if genes and other nucleic acid sequences are considered as separate entities, if...
According to Christie, lipids can be defined as ‘fatty acids and their derivatives, and substances related biosynthetically or functionally to these compounds’. This is a rather broad definition and covers a large number of organic substances. In general, two lipid classes can be distinguished:s...
Naturally, as these stories go, the plot twist is the catalyst for ending the relationship—in this case Arissa is not who she thinks she is, and when her memory is restored she realizes that she's married. I saw that one coming about a mile away, but it works okay here, nonetheless....
So let’s begin with the creation of RNA RNA Polymerase is what will form the RNA, but how exactly does it know to form it? Actually it is a catalyst that joins high-energy derivatives of the nucleotides, the building blocks of the nucleic acids. For the high energy, ATP is required,...