Cardiolipin

an unusual “double” phospholipid containing four fatty acid chains

found primarily in the inner mitochondrial membrane

acts to improve the efficiency of oxidative phosphorylation, by restricting proton flow across the membrane

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#Id: 7887

#Unit 2. Cellular Organization

In highly polarized cells, mitochondria can move long distances being propelled along microtubule tracks

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#Id: 1903

#Unit 4. Cell Communication and Cell Signaling

Stages in hematopoiesis

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#Id: 3067

#Unit 10. Ecological Principles

Species turnover on islands is generally low - The number of species on an island might remain the same, but the composition of the species should change continuously as new species colonize the island and others become extinct.

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#Id: 2375

#Unit 5. Developmental Biology

 Wnt signaling achieves its repression of head regeneration by inhibiting Erk

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#Id: 6153

#Unit 3. Fundamental Processes

DinB and UmuC are members of a distinct family of DNA polymerases found in many organisms known as the Y family of DNA polymerases. There are five translesion polymerases known in humans, four of which belong to the Y family.