Which of the three types of RNA has a sole purpose of bringing tyrosine, glycine, alanine, et cetera to the ribosome? Be careful!
messenger RNA
ribosomal RNA
transfeRNA

Which best describes red blood cells? a. they are colorless b. they protect against disease-carrying microorganisms c. they transport oxygen throughout the body d. they aid in blood clotting

What might explain the real-world results, show in the graph to the right, for one class of twenty students? check all that apply.

Karen is a forensic scientist whose purpose is to identify and evaluate physical evidence. which of the following tasks does she perform? a. reporting results of scientific analysis b. interviewing suspects c. questioning witnesses d. preparing victims for burial