How do I find the protons, neutrons, and electrons in this picture

Which prevent errors in dna replication? a. helicase enzyme checks the dna for errors. b. each base can attach to only one other type of base. c. ribosome enzymes prevent errors from happening. d. dna contains no complementary base pairs.

How will technology impact medicine in the future?

What is a group of organisms that are closely related and share similar characteristics