Answer: Amino acids
Explanation: There are 20 different types of amino acids that can be combined to make a protein. The sequence of amino acids determines each protein's unique 3-dimensional structure and its specific function. Amino acids are coded by combinations of three DNA building blocks (nucleotides), determined by the sequence of genes.
Yes, they must pass through a membrane proteins in a process called facilitated diffusion.
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❖ I believe the correct answer is A. ecosystem
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This is a semiarid biome characterized by a mixture of shrubs and open woodlands. In the open woodlands, there are large areas of grasses and wildflowers, mixed with a few large trees. Chaparral has hot and dry summers and cool, moist winters.