Nutrient cycle / nutrient cycling
Answer:
BSL or the biological safety levels refers to an array of protections consigned to autoclave-associated activities, which occurs in specific biological labs. The BSL-3 refers to the biosafety level that generally comprises work on microbes, which are either exotic or indigenous and can result in potentially or extreme lethal disease via inhalation. The examples of microorganisms that are handled in BSL=3 comprises West Nile virus, yellow fever, and the bacteria, which leads to tuberculosis.
<span>The question says, a scientist is carrying out replication of DNA artificially in her laboratory. What will she use to join the gaps on the DNA strand? They correct option is DNA ligase. DNA ligase is the enzyme which specializes in facilitating the joining of DNA strands by catalysing the formation of phosphodiester bonds.</span>
Break down food.............................
D. Or C. Is the answer but it is more than likely D.