During the replication process, which enzyme(s) unwind(s) the double-stranded DNA? 1.) DNA ligase
2.) DNA polymerase
3.) DNA primase and helicase
4.) DNA gyrase and topoisomerase

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

Which muscle is responsible for inhalation ?

Consider the classification levels of a human. eukarya ,animalia ,chordata ,mammalia ,primates, hominidae ,homo ,sapiens .which is the most specific taxonomic level in the classification system above? a sapiens b homo c hominidae d primates