D I think sorry if it’s wrong ♀️
Answer:
Due to less steps and requires less energy.
Explanation:
The bacterial cell is able to use glucose first as an energy source then switch to lactose because glucose requires less steps and less amount of energy for the break down as compared to lactose. If lactose is the only sugar available to the bacterial cells, then bacterial cells will use it as energy source for the production of energy. In order to use lactose, the bacteria must express the lac operon genes, which encode the main enzymes for lactose uptake and metabolism.
<span>The cartilaginous rings in the trachea and the costal cartilage connects the ribs to the sternum. The same cartilage type is also found in articulating joints. The purpose of the specific cartilage is to give a smooth surface that connects and ends at the articulating bones.</span>
Correct answer: A) The eradication of childhood illnesses
Stem cell are the type of biological cells that have the ability to differentiate into other cell type and can divide to produce different types of cells in the body. They are called regenerative cell which renew itself, they are found in multi-cellular organism.
It can be used as a renewable source of cell replacement and tissue, it can treat serious and common type of disease without organ surgeries and transplantation. It can treat spinal injury, heart disease, diabetes, stroke and osteoarthritis. It has been successfully used in bone marrow transplantation.
Hence, the correct answer would be the eradication of childhood illnesses
