Genetic Mutations and Biological Evolution

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What is the role of ribosomes during translation?

Assemble and link amino acids in the precise order dictated by the mRNA sequence

Describe the structure of phospholipids and their arrangement in cell membranes.

Phospholipids have a hydrophilic (water-loving) end and a hydrophobic (water-hating) end. In cell membranes, phospholipids form a bilayer with hydrophilic ends facing the inner and outer surfaces, and hydrophobic ends in the interior.

What is the impermeability of phospholipid membranes to?

Water, ions, and virtually all hydrophilic small molecules

How are phospholipids and cholesterol arranged in cell membranes?

Phospholipids form the bilayer structure, while cholesterol is inserted into the phospholipid framework.

What are the functions of membrane proteins in cells?

Regulate cellular communication, facilitate transport of ions and small molecules, cell adhesion, and maintenance of cell shape

Explore how alterations in genes, known as mutations, contribute to biological variation and evolution. Learn about the random nature of mutations, their effects on gene and protein function, and their role in conferring evolutionary advantages over time.

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