Answer:
The lids of the Petri dishes were inadvertently left on while being sterilized
Explanation:
- The process of eliminating any microbe from a particular object to achieve a sterile aseptic environment is termed as sterilization.
- Sterilization mainly aims to either remove, kill or make any microbe inactive by using various means such as irradiation, heat, pressure, etc.
- In the given question radiation is used to sterilize the Petri dishes and thus, if sterilization is successful there should not be any contamination.
- However, since there is contamination present amongst the bacterial colonies growing on agar plated in the Petri dishes this shows that the sterilization has not been done successfully and a possible reason for this could be that while sterilizing the<em> lids of the Petri dishes were kept on. </em>
The three principal organs of seed plants are roots, stems, and leaves. Roots: absorb water and dissolved nutrients. anchor plants in the ground.
<span>A nurse a professional with many duties, one she has the knowledge necessary to understand what is going on in medical situations, and report those plainly and accurately. Secondly, the nurse is responsible for communicating with family members more so than the primary physician or surgeon. This give the nurse a better ability to connect and talk with people in stressful situations.</span>
Answer: Viruses
Explanation:
Viruses are tiny infectious agents that rely on living cells to multiply. They may use an animal, plant, or bacteria host to survive and reproduce.
The kidneys filter the blood to excrete waste