Galactolipids are localized in the thylakoid membranes (internal membranes) of chloroplasts; they make up 70% to 80% of the total membrane lipids of a vascular plant, and are therefore probably the most abundant membrane lipids in the biosphere. 

TLS Online TPP Program

#Id: 3781

#Section 2: General Biology

The multi-atom combinations are called molecules. A molecule is the smallest part of a substance that has the physical and chemical properties of that substance.

TLS Online TPP Program

#Id: 7927

#Section 3: Genetics, Cellular and Molecular Biology

Function of the ER:

most eukaryotic cells is to sequester Ca2+ from the cytosol (High concentration of Ca2+-binding proteins in the ER facilitates Ca2+ storage)

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#Id: 8649

#Section 3: Genetics, Cellular and Molecular Biology

During S phase and mitosis, 

Cdh1 is phosphorylated, Cdh1 dissociates from APC/C, and APC/C becomes inactive.

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#Id: 8100

#Section 2: General Biology

Sphingolipids contain a single fatty acid, in amide linkage to the sphingosine backbone.

TLS Online TPP Program

#Id: 8959

#Section 3: Genetics, Cellular and Molecular Biology

Intimacy between the genomes of the mitochondria and the nucleus within a cell, it may not be surprising that extensive HGT has occurred between them