What ensures that the correct amino acid is added during translation?

The activity of the modern sample is 1.10 bq . how long does that measurement take?

Why do some dna fragments move farther than others during gel electrophoresis? a. because their shapes are different b. because they are different types of molecules c. because the samples are different colors d. because their masses are different

Math focus 4. calculate a map has index contours at 250 m, 500 m, and 750 m. what is the contour interval?