Human PathogensA pathogen is anything that causes disease. Other protist pathogens prey on plants, effecting massive destruction of food crops.Plasmodium SpeciesMembers of the genus Plasmodium must colonize both a mosquito and a vertebrate to complete their life cycle. In vertebrates, the parasite develops in liver cells and goes on to infect red blood cells, bursting from and destroying the blood cells with each asexual replication cycle (Figure 1).
LipidsLipids are a diverse group of hydrophobic compounds that include molecules like fats, oils, waxes, phospholipids, and steroids. Let& 39;s start by developing a core understanding of this class of biomolecules.Fats and oilsA common fat molecule or triglyceride. These types of molecules are generally hydrophobic and, while they have numerous functions, are probably best known for their roles in body fat and plant oils.
Let& 39;s start to think a little about the rate of a reaction. This initial positive change in free energy is called the activation energy (or free energy of activation) and is sometimes abbreviated EA.Note: possible discussionThe oxidation of gasoline is highly exergonic. Despite this, why do cars not spontaneously explode in parking lots?
9.1: Regulation of Gene Expression in BacteriaWithin its tiny cell, the bacterium E. coli contains all the genetic information it needs to metabolize, grow, and reproduce. It can synthesize every organic molecule it needs from glucose and a number of inorganic ions. Many of the genes in E. coli are expressed constitutively; that is, they are always turned & 34;on& 34;.