Cell

Photovoltaic Cells Using Single-Walled Carbon Nanotubes as a Sustainable Alternative Energy Source As a result of all the developments made since the Industrial Revolution, humans have managed to improve the quality of life, expand human knowledge and witness a rapidly increasing population. However, along with these advancements come crucial concerns about pollution, the global climate, and energy security, all of which exacerbate each other. As the human population increases and global…

(Griffioen & Molema, 2000). Endothelial cells which line the blood vessels are in direct contact with blood. Below the layer of endothelial cells, the pericytes (structural support cells) surround the blood vessels along with fibroblasts, smooth muscle cells, extracellular membrane and basement membrane (Griffioen & Molema, 2000). Endothelial cells play a role in many regulatory processes such as release of chemo-acctractants (cytokines and chemokines) that directs cells of the immune system…

The process of somatic cell nuclear transfer SCNT is a laboratory procedure where the purpose is to copy, reproduce, a live creature or CLONE it. The nucleus of a somatic cell, any cell of a living organism other than the reproductive cell, the cytoplasmic factors influence the nucleus to turn into a zygote. As a result, the egg undergoes a blastocystic stage and it creates the embryonic stem cells. The process takes two cells, one is the donor of the nucleus and the second the receiver of this…

Scientists are using stem cells to mess with the embryos they come from and diseases common all around the world. This topic is so popular people feel that “a fixation on it alone has come at the cost of many other important issues being overlooked or, at the very least, under-examined” (Lysaght, Tamra, and Alastair V. Campbell 251). Stem cells are undifferentiated cells that can be transformed into any type of cell (Rebecca). Scientists take these cells to make new cells, tissues, and organs to…

(alkyl-PACs) to elucidate the mechanism of neurotoxicity using human neuroblastoma cells. The lethal concentrations (LC10 & LC20) were found at around 10 µM and 40 µM after 24 hours exposer to SK-N-SH cells. Exposed differentiated neuronal cells showed significant dose-dependent increase levels of reactive oxygen species (ROS), even at with sub-lethal concentration (DBT, and…

Animal cell membranes are selectively permeable and allow certain substances in and out through passive or active transport. While plant cells have a cell wall to combat high concentrations of water, animal cells only have a cell membrane. This lack of support can make a hypotonic animal cell expand and burst. A hypertonic animal cell will undergo osmosis and release water eventually causing the cell to shrivel up and shrink. Both of these results make it extremely important for animal cells to…

stem cells, and different stem cells which can do things other stem cells can and can do. There are two main stem cells, and they the embryonic stem cells, and adult stem cells. However there ae about another dozen more stem cells which are also important to the human body. These other stem cells are tissue stem cells, blood stem cells, skin stem cells, Mesenchymal stem cells, stem cells in the eye, induced plum stem cells, brain stem cells, bone marrow stem cells, and also liver stem cells. All…

organs, there are six basic processes that a cell is required to go through. The six processes include: cell division, cell growth, differentiation, migration, apoptosis and cell connections. Cell division is a cell progressing through the cell cycle in order to multiply. Cell growth is a cell using the nutrient and optimal environment to grow in volume. Differentiation is a cell turning into specialized cells due to different gene regulators. Migration is a cell moving to the appropriate…

With a cell inside of a hypotonic solution, the amount of a solute outside of the cell is less than the amount of solute inside the cell. The cell has more of the solute on the inside, which means the water will move into the cell. Water will move by osmosis to the area of greater solute concentration in order to balance the amount of solute and water. If a cell receives too much water as a result of a hypotonic environment, it may lyse, or burst, because of the influx of water. Plant cells…

into cells is one feature that distinguishes living things from all other matter. The cell is the smallest unit of matter that can carry on all the processes of life. The three principles define cell theory: 1. All living things are composed of one or more cells. 2. Cells are the basic units of structure and function in an organism. 3. Cells come only from the replication of existing cells. Most cells are small Prokaryotic: 1-10 µm Eukaryotic: 10 - 100 µm (1 µm = .001 mm) Shape of cell: Cells…