They sit on top like, they don't mix. right ?
Answer:
c. Cell division increases the mass of the original cell.
Explanation:
Cell division is a process of formation of daughter cells by dividing the existing cells. As the cells grow, their surface area to volume ratio reduces which means that a larger cell has a less surface area than its volume as compared to a smaller cell. Cells need to maintain a higher surface area to perform various biological functions. Therefore, after attaining certain growth, cells divide to increase their surface area and reduce their volume. Cell division reduces the mass of the parent cell. The newly formed cells grow to increase their mass.
Answer:
3. the absence of a cell wall in human cells
Explanation:
Animal cells do not have cell walls. Cell membranes separate the cytoplasm of the animal cells from the surroundings and maintain their interior. Plant cells have cellulosic cell walls. A cell wall surrounds the cell membrane of a plant cell. Cell walls serve to provide structural support and protect plant cells from pathogens. Cell walls also help keep excess water out of cells so they do not burst. Therefore, human cheek cells would not have cell walls while the onion cells would have cell walls made up of cellulose.
The answer is all Earth's organisms and the non-living environment with which they interact.