According to the original fluid mosaic model, membrane proteins freely move in the plane of the lipid bilayer (lateral diffusion) like protein icebergs in a sea of lipids." however, the fluid mosaic model has been refined since its description in 1972. complete the following statements, which describe some of the refinements of the fluid mosaic model as it relates to protein mobility. choose the answer that best completes each sentence.
1. may form a locally rigid, non-lipid matrix surrounded by the fluid lipid matrix.
2. membrane domains rich in sphingolipids and cholesterol, are regions with reduced lipid and protein mobility protein-protein interactions can be attached to proteins or can "fence in" proteins
3. reducing protein mobility

The construction of phylogenetic trees is a mapping out the proposed divisions and common ancestors of all living species. traditionally, these trees have been built using morphological data, such as appearance and embryology. recently, it has been possible to construct these trees using molecular data. phylogenetic trees based on different types of information agree with each: that there is strong evidence of a real underlying common descent. this phylogenic tree is composed based on molecular data (rrna). what statements can we infer are true about the organisms throughout the tree? because the tree is rooted, all branches share a common ancestor. all organisms have some sort of cellular structure/organization. all eukaryotes evolved from bacteria. since the organisms contain rna, they share the same dna. if the organisms contain rna, the share the same four nitrogen bases.

Brainliest ! is slowing down a car an example of acceleration? explain. - explain correctly

What would most likely happen to a unicellular organism if it was exposed to a hypotonic solution for an extended period of time?