Simplebiol
In previous articles, we learned about the phases of the cell cycle and how these gradually lead a cell to division. However, do all the cells of our body have the ability to divide? If not, what is the factor that determines whether a specific cell will divide or remain idle until it dies? In […]
In previous articles, we talked about the two types of cell division, mitosis, and meiosis. We also described the differences between the terms chromatin, chromosome, and sister chromatid. However, if at this point someone asked you to find the number of chromosomes, chromatids, DNA molecules, and others, would you still have difficulty answering? If your […]
In organisms that follow sexual reproduction, gametes combine to form the zygote, the first cell of a new organism. We will discuss the familiar case of humans, but the same applies to other organisms as well. The two gametes, sperm and egg, are haploid cells, meaning they contain half the chromosome number of somatic cells. […]
Mitosis is a type of cell division that results in two daughter cells that are identical to each other and their parent cell as well. Mitosis is an important process for many organisms since it serves different purposes. The zygote, the first cell of a new organism, undergoes a series of mitotic divisions to give […]
Chromosomes, chromatin, nucleosomes, genes, alleles? What is the difference between these terms? What are their roles? And how are they organized inside each one of the small cells of an organism? When you hear these words, you might think that they are pretty much the same, or you may not be able to distinguish their […]
Have you ever wondered how the organs of an embryo develop inside the womb, how the immune system heals infections, or how a tree becomes taller with time? All of the organisms survive, grow, and reproduce by creating new cells. But how do new cells occur? No matter the organism or the type of cells, […]
We learned previously that the cell is the fundamental structural and functional unit of all the organisms that exist on Earth. Not all of the cells are the same, though. They can be categorized into two groups based on their characteristics, as we will analyze further. These two groups are prokaryotic cells and eukaryotic cells. […]
What is there in common between a snail and a frog? A fish and a tree or a turtle and your best friend? At first glance, you would answer that they are almost incomparable. They look so much different that you could claim their only similarity is that they are all living organisms on our […]