The photosensitive pigment in the rods is called rhodopsin (visual purple).

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#Unit 4. Cell Communication and Cell Signaling

An important signal transduction protein that binds to PI 3-phosphates is protein kinase B (Akt),  a serine/threonine kinase

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#Unit 6. System Physiology – Plant

V-class proton pumps cannot acidify the lumen of an organelle because these pumps are electrogenic.

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#Unit 4. Cell Communication and Cell Signaling

Basophils are nonphagocytic granulocytes.

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#Unit 10. Ecological Principles

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#Unit 3. Fundamental Processes

Replication inserts the normal (nonmodified) bases into the daughter strands. This generates hemimethylated DNA, in which one strand is methylated and one strand is unmethylated.