Sertoli cell

Cell Structures-DBQ Genetic engineering is the changing of genetics for different reasons. Some reasons might be changing the genes for the better, Some not so much. Genetic engineering is a good thing in some conditions. Don’t create a half turnip, half trout, half human. I do think that you should help to cure diseases through genetic engineering. That is important because you could eliminate a disease altogether concerning human disease. Pain is a very important feeling to have to live. Pain…

in three separate layers - the stratum corneum, the epidermis and the dermis [39]. The protective stratum corneum is the outer layer that we can see, the epidermis is the layer of skin underneath it, and the dermis is the lowermost layer [40]. The cells of the stratum corneum are basically dead, and they protect the body from the harsh outer environment [41]. The epidermis is mostly responsible for producing…

stable transfection allows the plasmid to remain in the cell genome, in contrast to transient transfection where expression is limited due to eventual degradation. The plasmid integrates into the genome of the transfected cell, and becomes part of the cell line, passing on during replication8. Different reagents and other physical tools involving electrochemical changes can be used for transfection, and efficiency depends on the specific cell type. This experiment uses the Lipofectamine…

Advancement in the area of science and technology has always created a buzz in our world. Our world runs on the belief that scientific discoveries or breakthrough will one by one rid of diseases and illnesses that is trying to harm human life, but it also runs on technology, from people’s need of energy/electricity for light to people’s addiction to smartphone, internet, and need of Wi-Fi. The advancement in both areas would have not been possible without the help of each other; the…

Duchenne muscular dystrophy (DMD) is a one type of muscular dystrophy. Muscular dystrophy is a group of genetic disorders, leading to progressive muscle degeneration. People suffering from most common muscular dystrophies ,Duchenne/Becker (DMD), Myotonic (MMD), and Limb-Girdle (LGMD), experience muscles degradation overtime, leading to overall muscle weakness and decreased mobility. Statistics show that the most prevalent forms of muscular dystrophy are rare. For example in 2007 in the…

Hypothesis: 1.) Animals with nocturnal sleep cycles will have greater similarity in the PER gene than the PER gene of diurnal animals. 2.) Differences in the sequences of PER genes can account for variance in the free running period (FRP) between varying organisms. 3.) Human PER gene homologs arose from prior duplication events throughout evolution. Motivation and Background: The biological clock is an endogenous mechanism that regulates the physiological activities of an organism. It was…

What is Genetics? Genetic Diseases A genetic disease involves an abnormality in genetic material. Otherwise, there could be mutations or changes in an organism’s DNA. A genetic disease can be inherited through a family. There are three types of disorders: Chromosomal Disorders, Single Gene Disorders, and Multifactorial Disorders. Chromosomal Disorders are caused by too many chromosomes, not enough chromosomes, or the chromosome structures are abnormal. Polymelia is considered as a…

Practical 3: Enzyme Activity (2.5) Research Question: How does the change of pH affect the rate of decomposition of hydrogen peroxide on the enzyme, catalase? Background Information: Enzymes are globular proteins, which are synthesised by cells in order to perform specific functions. These act as catalysts in chemical reactions and are considered a major factor in an organism as these reaction rates are required to be shortened in order to support life. Catalase is one of the most…

key for the development and survival of a fetus/embryo. 2. Leydig cells • Leydig cells form and secrete testosterone. The testosterone is secreted in response to the lutenising hormone. Spermatozoa production is promoted by the testosterone secreted. The testosterone being secreted by the Leydig cells are important for the formation of secondary characteristics of the male. 3. The different pancreatic cells • One of the pancreatic cells is the exocrine gland. The exocrine gland secretes out…

the inhibitory nucleotide (ATP) would have higher affinity for the channel than the activating nucleotide (MgADP). Closure of the K+ channel leads to depolarised state of the membrane. The voltage-gated calcium channel is therefore always open as the cell is depolarised constantly. Other example of mutations that cause hyperinsulinism by impairing the channel activation in response to metabolic inhibition are 3992-9G>A and E1506K. E1506K eliminates metabolic activation by reducing Mg2+…