The major candidate that forms the Nieuwkoop center in these vegetal cells β-catenin

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#Unit 2. Cellular Organization

In skeletal muscle, 

The desmin filaments encircle the Z disk and are cross-linked to the plasma membrane. 

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#Id: 3138

#Unit 7. System Physiology – Animal

There are four pulmonary lung volumes:

1. Tidal volume
2. Inspiratory reserve volume
3. Expiratory reserve volume
4. Residual volume

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#Unit 4. Cell Communication and Cell Signaling

Adherens junctions 

Adhesion type- Cell-cell

Principal CAMs- Cadherins

Cytoskeletal attachment- Actin filament

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#Id: 940

#Unit 5. Developmental Biology

The mode of fertilization in sea urchin being external, the egg and spermatozoa are released into the sea water.

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#Id: 5449

#Unit 7. System Physiology – Animal

Refractory period is divided into:

Absolute refractory period

Relative refractory period