In bacteria and mitochondria, the formyl residue on the initiator methionine is removed from the protein by a specific deformylase enzyme to generate a normal NH2 terminus.

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#Id: 1026

#Unit 5. Developmental Biology

Neural plate formation follow the principle of development:  often the signals promoting the specification of one cell type also block the specification of an alternative cell type.

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#Id: 1179

#Unit 7. System Physiology – Animal

Blind spot 

There are no visual receptors over the optic disk.

 

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#Id: 2576

#Unit 7. System Physiology – Animal

Glucose reabsorption is a two-step process: 

Na+-glucose cotransport across the luminal membrane 

Facilitated glucose transport across the peritubular membrane

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#Id: 4998

#Unit 6. System Physiology – Plant

To favoring internode elongation is usually reduced leaf area and reduced branching, but at least in the short run this adaptation to canopy shade seems to work.

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#Id: 1691

#Unit 4. Cell Communication and Cell Signaling