Atomic nucleus

C-myc is a transcription factor that is involved in the strict regulation of the cell cycle. It regulates genes that promote the induction of the cell cycle and it is also involved in apoptosis. The c-myc ¬gene is one of the most commonly activated oncogenes and has been found to be overexpressed in many cancers. Activation of this oncogene may contribute to as many as 100,000 cancer deaths per year in the United States alone (Dang et al., 2006). The discovery that this gene is involved in so…

Mitosis I chose to do mitosis in my science project because i knew about mitosis more than the other topics on the list of options. In my project, i modeled mitosis with styrofoam balls, paint, and clay. I modeled the steps prophase, metaphase, anaphase, telophase, and cytokinesis . I modeled the steps by cutting the styrofoam balls in half, painted them and I put the clay models of organelles inside the styrofoam cell i made. I made skin cells as the type of cells i am using for my model, by…

filamentous organelles of all aerobic cells of higher animals and plants and also certain microorganism like protozoa. Studies show that that mitochondria are the direct descendants of a bacterial endosymbiont that became established at an early stage in a nucleus-containing host cell (Gray et al., 1999). Mitochondria are surrounded by a double-membrane system, consisting of inner and outer mitochondrial membranes separated by an intermembrane space. (Cooper, 2000). It has the outer membrane and…

Plant cells are eukaryotic cells, or cells with a membrane-bound nucleus. Unlike prokaryotic cells, the DNA in a plant cell is housed within the nucleus. In addition to having a nucleus, plant cells also contain other membrane-bound organelles, or tiny cellular structures, that carry out specific functions necessary for normal cellular operation. Organelles have a wide range of responsibilities that include everything from producing hormones and enzymes to providing energy for a plant cell.…

A eukaryote is a single-celled or multicellular organism that contains a membrane bound nucleus. A eukaryotic cell has a nucleus that entraps the DNA unlike the prokaryotic cell that lets it be free. A prokaryote is also known as bacteria. The DNA roams freely inside of the cell. Eukaryotic cells are large meanwhile prokaryotic cells are much smaller. There are many differences about the prokaryotes and eukaryotes cells. The DNA replication of a eukaryotic cell would be two chains held together…

discovered [1], the nucleus is the control center of the cell. Given its name by Scottish Botanist, Robert Brown, the nucleus is responsible for all cellular processes in eukaryotic cells and usually fills approximately 10% of the cell's volume [1]. The reason for this organelle's large size is because of the DNA it contains. In fact, each human contains approximately six feet of DNA which is tightly packed and highly organized by proteins, the majority of it stored in the nucleus [1]. With this…

Meiosis starts: DNA Replicates I am going to draw a nucleus with DNA inside it represented with beads as the four pairs of chromosomes. Outside of the nucleus there will be centrioles drawn. This is where meiosis begins and replicates the cell Spindle fibers start to form on the centrioles and chromosome pairs bind together making tetrads. Nuclear membrane starts to dissolve. Nuclear membrane will be drawn in dashed lines. The chromosomes will be homologous pairs with centromere in the center…

They each have the golgi apparatus to package and deliver materials within the cell. Also, they both have a nucleus, the control center of a cell. Within the nucleus there is a nucleolus that creates ribosomes, chromatin that holds information, and a nuclear envelope that controls the materials that pass in and out of the nucleus. The ribosome create proteins for the cell. Surrounding the nucleus are the smooth and rough endoplasmic reticulum. These create the materials that the golgi apparatus…

use a light microscope if you are viewing a live specimen and do not want to kill it. 2. Prokaryotic cells are small, simple, no nucleus, no membrane-bound organelles, single loop of DNA (nucleosome), no cellulose, cytoplasm, cell membrane, cell wall (made of carbs), sometimes have cilia or flagella (movement). Eukaryotic Cells are larger cells, complex, with nucleus, membrane bound organelles, DNA tightly wrapped around histone proteins in chromosomes, cellulose in plant cell walls. 3.…

In the cell cycle, there are many phases. These are always monitored for being properly functioning. For example, if a DNA strand is missing, it will be noticed in the process. This is what is called the NORMAL cell cycle. In the CANCER cell cycle however, things are a bit different. All cells go through a cycle, from the G0, to the M phase (mitosis). The initial phase, G0, is where cells “rest”, maintaining normal, non-division related functions. Cancer cells usually cannot or do not enter G0,…