The Davson-Danielli model is a model that shows the cell membrane is sandwiched between two layers of . A. true, lipids B. true, protein C. false, protein D. false, lipids

The Davson-Danielli model is a false model that shows the cell membrane is sandwiched between two layers of protein .

Explanation:

In 1935, scientists Hugh Davson and James Danielli proposed a model of cytoplasmic membrane, which received their name.

The Davson-Danielli model explained that, in the structure of the cell membrane, the lipid bilayer was located inside a double layer of proteins, resembling a sandwich.

The characteristic of the proteins of being hydrophilic and the impossibility of these molecules to maintain their continuity in the exterior of the membrane put in doubt the viability of this model.

In 1972 it is proposed the model of fluid mosaic of the cellular membrane, by Singer and Nicholson, model that explains the structure of the cellular membrane —lipidic bi-layer and structural proteins— still in effect.

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igneous rock formed from below the surface would have more crystals because

answer: because magma cools more slowly than lava