Sertoli cell

    Page 3 of 50 - About 500 Essays
  • The Importance Of Germination In Plants

    Plants are mainly multicellular, predominantly photosynthetic eukaryotes of the Kingdom Plantae (Plant, 2018). Kingdoms are the main divisions which scientists use to classify all living things on Earth. Biologists have discovered 500 000 species of plants, of which 250 000 are angiosperms and are dominant in plant study (Encyclopedia, n.d.). Seeds are a small embryonic plant, which is enclosed in a small covering, called a seed coat, with stored food inside until they can obtain their energy…

    Words: 973 - Pages: 4
  • Importance Of Polyploidy

    The most common effect of polyploidy in plants is the gigas effect. Gigas effect was explained by Stebbins (1950) as increase in cell size causing larger organs such as roots, leaves, tubercles, fruits, flowers and seeds. However, this is not always exhibited by polyploid plants as the number of cell divisions in polyploidy is often reduced (Stebbins, 1971). Polyploid plants tend to have lower growth rates and flower later or in longer period than their diploid…

    Words: 851 - Pages: 4
  • Potato Osmosis In Potato

    pressure than the solution to which it is compared. Water is then forced into the protein lined channels; this increased mass of the solution creates a blockade which decreases the ration that the solution leaves the cell and increases the rate of solutions that enter the cell expanding the cell. (Sciencing, 2018) This was observed in the distilled water test-tube. A hypertonic solution is the opposite where it requires a higher osmotic pressure than the solution to which it is compared. This…

    Words: 1071 - Pages: 5
  • Persuasive Essay On Human Cloning

    about being on an organ transplant waiting list for decades, waiting for their inevitable death. Human cloning has allowed us to grow organs, by using skin cells and converting them to stem cells. The nucleus of these stem cells of skin are then replaced into the nucleus and create what is known as a blastocyst, a bundle of hundreds of cells whose purpose is to specialize growing a specific body part, such as an ear. (Knapton). Not only can this help people who are in life-threatening…

    Words: 1552 - Pages: 6
  • The Cell Membrane: The Most Important Parts Of The Cell

    The Cell Membrane is one of the most important parts of the cell. If not for the cell membrane it would be extremely easy for things to invade the cell; this is because on of the cell membranes job is to control what come in and out of the cell (i.e. ions, viruses, etc). Also the cell membrane is what helps hold the cell and all of its organelles Endoplasmic Reticulum (AKA the ER), smooth and rough whats the difference? The smooth ER does not have any ribosomes while the rough ER is covered in…

    Words: 1937 - Pages: 8
  • Ronald M. Green Building A Baby From The Genes Up Analysis

    In Ronald M. Green’s “Building a Baby From the Genes Up,” Green shares an anecdote, gives his support for genetic modification, addresses opposing arguments, refutes the opposing argument, and finishes with his support for genetic modification. His thesis is because genetic modification is already happening, we may as well embrace it and make it a part of our lives. In the other essay “Genetically Modified Humans? No Thanks” written by Richard Hayes, he addresses Green and his argument right off…

    Words: 744 - Pages: 3
  • Polymerase Chain Reaction And Gene Therapy

    blood cell or hair follicle to be examined.Example: suspected homicides,suicides,and cases referred from the court. 3.PCR application in the identification of genetic disorder: The Polymerase chain reaction technology has been most commonly used to amplify the gene segments which contain kenned mutations for diagnosis of inherited diseases like beta thalassemia, sickle-cell anemia,cystic fibrosis,etc. 4. PCR is especially useful for the prenatal diagnosis of inherited diseases where cells…

    Words: 994 - Pages: 4
  • Peptidomimetics Essay

    Peptidomimetics are compounds whose essential elements (pharmacophore) mimic a natural peptide or protein in 3D space and which retain the ability to interact with the biological target and produce the same biological effect. The demand for modified peptides with improved stability profiles and pharmacokinetic properties is driving extensive research effort in this field. Many structural modifications of peptides guided by rational design and molecular modeling have been established to develop…

    Words: 840 - Pages: 4
  • Human Body: The Human Skeletal System

    The human body contains a bunch of different systems, and it has many divisions within the systems. Organs, tissues, bones, joints, and cartilage are just a few things that are the genetic makeup of the actually human skeletal system. The human skeletal system is very diverse but unique at the same time. Bones are responsible for playing a major role in how our body is made up and functions. A bone is a rigid organ in which it contains living and evolving tissue that has various particular…

    Words: 1660 - Pages: 7
  • Fruit Fly Lab Report

    This summer I had an internship working in Paul Garrity’s behavioral biology lab at Brandeis University and conducted experiments on genetically modified common fruit fly, Drosophilia. There I learned about the important research that is being done on these fruit flies throughout the country and the burgeoning science of genetic modification that has begun dominating laboratories across the country. This research focused in on the sensory receptors that the flies use to detect changes in…

    Words: 1156 - Pages: 5
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