Substitutions occurs when Proofreading fails

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#Id: 8363

#Unit 2. Cellular Organization

Myosins have 

Motor head domain

Lever-arm neck domain

Cargo-binding tail domain

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#Id: 5565

#Unit 7. System Physiology – Animal

A countercurrent system is a system in which the inflow runs parallel to, counter to, and in close proximity to the outflow for some distance. This occurs for both the loops of Henle and the vasa recta in the renal medulla

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#Id: 3323

#Unit 6. System Physiology – Plant

For each H+ pumped across, a negative ion (e.g., OH− or Cl−) will be “left behind” on the cytosolic face, causing a buildup of negatively charged ions there.

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#Id: 9084

#Unit 4. Cell Communication and Cell Signaling

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#Id: 7411

#Unit 5. Developmental Biology