A researcher growing cells in culture observed that the cells always divided once they reached a certain size. When she added mo
re nutrients to the culture medium or adjusted the temperature of the growing chamber, the cells grew at different rates but always divided once they reached a certain size. Which statement explains these observations?a. As they grow, cells require greater and greater quantities of nutrients from the environment, and they must reduce this requirement by dividing.b. The increasing surface area of a cell as it grows larger increases the risk that small molecules that can harm the cell will pass from the environment into the cell interior.c. Efficiency of transport of materials within a cell decreases with size, thus limiting the maximum cell size.d. The cell’s surface area increases faster than its internal volume as it increases in size, and this leads to an inability of the cell to feed itself.
Apart from the signals that cells receive from the DNA for division timing, another factor that determines when cells divide is their size. As the cell grows, it's circumference increases accoring to the formula but it's volume follows the area formula mathematically which is and this leads to surface area of the cell to increase faster than its volume, leading to problems such as feeding, transportation of materials within the cell etc. So the answer to the example given in the question is D.
When an organism is buried quickly, there is less decay and the better the chance for it to be preserved. The hard parts of organisms, such as bones, shells, and teeth have a better chance of becoming fossils than do softer parts. One reason for this is that scavengers generally do not eat these parts.
The answer is D. The digestive system provides energy to your muscular system by breaking down foods and using those nutrients to create energy. It is like how when you are starving, you feel weak because you don't have energy. When you eat something you get more energy so you can move
