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TLS Online TPP Program

#Id: 7752

Electron affinity: The enthalpy change that results from adding an electron to a gaseous atom.

Electron affinity is becoming less negative (less exothermic) and less likely to gain an electron. 

#Section 2: General Biology #Structure of atoms #Part B Pointers
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TLS Online TPP Program

#Id: 8127

#Section 2: General Biology

β-Carotene is the precursor of vitamin A1.
Oxidation at C-15 converts retinol to the aldehyde, retinal, and further oxidation produces retinoic acid, a hormone that regulates gene expression. 
TLS Online TPP Program

#Id: 8126

#Section 2: General Biology
TLS Online TPP Program

#Id: 8125

#Section 2: General Biology

Steroids derived from cholesterol.
TLS Online TPP Program

#Id: 8120

#Section 2: General Biology

Arachidonic acid and some eicosanoid derivatives.
TLS Online TPP Program

#Id: 8119

#Section 2: General Biology

The triterpenes are C30 terpenes and include squalene and lanosterol, two of the precursors of cholesterol
TLS Online TPP Program

#Id: 8118

#Section 2: General Biology

 Glycosphingolipids as determinants of blood groups.