The enzyme that converts violaxanthin to zeaxanthin is an integral thylakoid protein showing a pH optimum of 5.2.

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#Id: 7580

#Unit 5. Developmental Biology

The cholesterol efflux from the sperm cell membrane is thought to change the location of its “lipid rafts,” contain receptor proteins that can bind the zona pellucida and participate in the acrosome reaction

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#Id: 10413

#Unit 4. Cell Communication and Cell Signaling

Angiogenesis

The developmental process for the formation of blood vessels that are needed to supply nutrients to a growing tumor

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#Id: 7055

#Unit 11. Evolution and Behavior

Dollo’s law:  A biological generalization positing that complex characters, once lost in evolution, are extremely unlikely to reappear and thus the loss of complex characters is virtually always irreversible.

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#Id: 3879

#Unit 5. Developmental Biology

The emerging column of cells topples over called ‘the slug’.

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#Id: 9786

#Unit 6. System Physiology – Plant

Tomato Cf genes is also encodes a R proteins that recognize apoplastic effectors are receptor‐like proteins (RLPs) against the extracellular colonizing fungus Cladosporium fulvum for Avr9