Which type of RNA carries amino acids from the cytoplasm to the ribosome

Which best explains why there are 64 possible codons in the genetic code and only 20 amino acids that make protiens of living organisms on earth

In iceland, the mid atlantic ridge runs through the center of the contry. what can you conclude about the apperence of iceland many thousands of years from now?

How do disease caused by bacteria and disease caused by viruses react to antibiotics