Sertoli cell

Science - study of the natural world Inference - logical deduction based on evidence Controlled Experiment - an experiment that only tests one variable Theory - a supported group of ideas to explain something Homeostasis - The ability for an organism to maintain a stable internal environment TEM - a microscope that transmits beam of electrons through a sample Centrifuge - a machine that rotates a container to separate substances Evolution - the process where organisms slowly develop and adapt Extrapolate

The documentary titled “The First Human Clone - Real Stories” highlights the controversial issue of human cloning. The documentary has shown the development of a ten-cell human embryo along with explaining the science behind this extraordinary procedure. Human cloning has raised complex ethical challenges for the people involved, the healthcare staff and the society on the whole. New definitions of parents and children are created by infertility treatments and a rethinking of traditional concepts

differentiate between types of cells, observing cell structures such as cell wall, nucleus and other unique features of microorganisms, learning different techniques such as proper handling and use of microscope, knowledge to prepare a smear from broth, gram staining, measuring microorganisms using ocular micrometer and to learn aseptic (sterile) techniques. The cell is the smallest basic structural, functional and biological unit of life. As we know variety of different types of cell, they all differ in their

tion of Cell Organelles Cells are surrounded with a boundary known as the cell surface membrane and as well as holding the cell together, being semi-permeable, it controls the movement of materials across it. Within the cell are a number of structures each which have specific functions. These structures are known as organelles. The cell surface membrane and the membranes of any of the membrane bound organelles described below are made of the same material, a double layer of phospholipid molecules

secretory cotransporter maintains electroneutrality by transporting ions with the stoichiometry of 1Na+: 1K+: 2Cl-. Two different gene isoforms of the Na-K-Cl cotransporter have been found. Both varieties of the symporter act to regulate and maintain cell volume and intracellular Cl- concentrations. However, the two different isoforms of NKCC vary structurally as although NKCC2 is around 60% homologous to NKCC1, it is lacking exon 21 (Delpire et al., 1994). The loss of this exon leads to the differential

Gene therapy is all about changing genes, often at a nucleic base level, in order to overcome obstacles pertained to medicine for the treatment of disease. It is a relatively new method of therapeutics due to the technological reliance and the intricate level of understanding needed of the human genome, which has only recently been overcome. Few approaches are available today, and many more are currently under investigation as scientists invest in the practicality of therapies whilst considering

have existed from 3.5 billion years ago when they became one of the first organisms to inhabit Earth. Prokaryotic cells are unicellular cells and are typically smaller than eukaryotic cells. They reproduce through binary fission. Prokaryotic cells have a range of shapes- spherical, rod-shaped and spiral. Its key feature is the cell wall, which allows strength to protect and prevent the cell from bursting or shrinking; it’s

virus carries genetic material (RNA or DNA), the genetic capacity (in kilobases), the genome organization of the virus and the therapeutic gene, the structure of the virus, the function of each component, the process in which the virus infects the host cell, the process of integration, the advantages and disadvantages of the use of that virus, and finally, clinical trial cases in which the virus was used as a vector. By looking at these aspects for each type of virus, I am able determine the extent to

Huzaifa Khan Ms. Harris Biology 1/3/15 Extra Credit Gattaca Vincent would only live for 30 years, and he would likely die from a 99% chance of a heart condition. Vincent was born the natural way, but Anton was genetically engineered in a laboratory. The doctor did not believe that some traits should be left to chance because they had the technology to create perfect humans. The doctor meant that the child was

From Baker’s Yeast to the Nobel Prize: A Biologist’s Quest to Elucidate Autophagy Molecular cell biologist, Yoshinori Ohsumi, won the 2016 Nobel Prize for his discoveries of autophagy mechanisms. His life’s work changed the world’s perspective on a fundamental process, and now, thousands of scientists use his research to develop potential treatment solutions for chronic diseases. Learn more… “I want everyone to understand the nature of fundamental research is such that it develops in ways sometimes