There are 20 naturally occurring amino acids, and each one only varies in the structure of the R side chain. two amino acids are shown in model one. what are the R side chains in each?

Compare and contrast nutrient limitation in soil vs. nutrient limitation in aquatic ecosystems

Which of the following statements most accurately describes convergent evolution? the process in which two similar species evolve separately from each other and share similar characteristics the process in which a single species evolves into two or more new species the process in which two entirely different species evolve in response to each other the process in which two different species evolve separately from each other but still share similar characteristics

The normal shape of an enzyme is as shown in structure a. if the enzyme’s shape changes to that shown in structure b, what are two consequences of this change?