The origin enters S phase in the condition of a prereplication complex, which contains ORC, Cdc6, Cdt1, and the inactive helicase

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#Id: 4460

#Unit 13. Methods in Biology

To make the antibody visible in the electron microscope, it must be attached to an electron-dense marker.

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#Id: 1868

#Unit 10. Ecological Principles

Apparent competition- Two species do not compete for the same resource but they do share at least one natural enemy.

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#Id: 9925

#Unit 4. Cell Communication and Cell Signaling

Adenoviruses and cytomegalo virus use to reduce the surface expression of class I MHC molecules, 

Measles virus and HIV, reduce levels of class II MHC molecules on the surface, 

Vaccinia virus, secreting a protein that binds to the C4b complement component.

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#Id: 5976

#Unit 10. Ecological Principles

NPP per Kg biomass per Year  Ocean > lake > Temperate grass land > Tundra > tropical grass land > Tropical forest > Temperate forest

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#Id: 7129

#Unit 6. System Physiology – Plant

Strigolactones act locally to repress axillary bud growth