Neonatal screening is done before the infant leaves the hospital. Blood is drawn through a heel stick and tested for several disorders that can cause lifelong disabilities. When is the ideal time to collect this specimen?

The vaccine in a flu shot contains weakened flu viruses. how does a flu shot work with the immune system? a. it destroys lymphocytes. b. it destroys macrophages. c. it activates macrophages. d. it activates lymphocytes.

Ascience research group is testing a new type of plant food. one trial is conducted in a controlled experiment. the data from the trial show that the plant that received the new food grew faster than the control plant. the group announces that the new plant food makes plants grow faster. what is the main weakness in this scientific claim?

What is the role of dna ligase in the elongation of the lagging strand during dna replication?