What is the second step of DNA replication? O Free Noating nucleotides attach to their complimentary base pair
O DNA polymerase unzips the DNA
O DNA helicase zips the DNA molecule back up
O DNA is replicated

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?

Group control group #1 experimental group yes yes yes control group #2 no new drug orange juice bed rest no yes no yes ves which of the following is the best explanation of why a second control group was included in this experiment? o a. to provide the volunteers in the study with something to drink o b. to prove that the common cold cannot be cured c. to confuse anyone who is trying to steal their new drug and sell it as their own invention o d. to researchers conclude that results are related to the new drug and not to the orange juice submit e previous

Which action is a reflex action. a. asking for coffe in a cold climate b. blinking when light is flashed in the eyes c. drinking water when thirsty. d. swallowing food e. taking an exam