<span>DNA polymerase is instrumental in DNA elongation as it catalyzes the addition of deoxyribonucleoside triphosphates to the 3 prime end hydroxyl group of the DNA chain. DNA polymerase binds on the origin of replication, and forms a pre-replication complex with other proteins. The replication complex unwinds DNA during replication</span>
<span>Transversus abdominis is the abdominal muscle that can only compress the abdomen</span>
Answer: A
Explanation: PCR help to create multiples of copies, it can produce millions of copies of DNA sequence in a test type in limited or few hours. PCR has revolutionize molecular biology, and it has become an essential tools for biologist, physicians or anyone who really want to work on the DNA.
<span>Laryngotracheobronchitis or croup is a disease that caused by viral infection. The virus could be influenza or parainfluenza virus. The infection will cause edema of the trachea and might obstruct the airway, causing difficulty in breathing.
</span>In this case, nurse should take attention to the patient airway and breathing. Patient with dypneu should be given oxygen and racemic epinephrine nebulized. Corticosteroid also help to reduce the swelling such as dexamethasome or budesonide inhalation.
