Endoplasmic reticulum

another amino acid. Whenever a cell is in need of producing a protein, it looks for its ribosomes to get the job done. Lysosomes are organelles in a cell that hold all of the enzymes made throughout the cell. They are created by the rough endoplasmic reticulum, sent to the Golgi apparatus and then finally become lysosomes. Their main function is to float around the cell and when the cell eats or consumes energy, the lysosomes burst into action to consume the energy. Even though lysosomes jobs…

It was time to depart. The engines had been warmed up, the supplies were ready and the equipment had been installed and was ready to use. “Five, four, three, two, one, BLAST-Off” chanted Captain Xerox at headquarters, and with that our micro-V96 craft was propelled towards the cell membrane for the first leg of our journey to investigate the process of Protein Synthesis in a eukaryotic animal cell. The cell membrane is a delicate wall of phospholipid molecules, consisting of hydrophilic heads…

Na+/Ca2+ exchanger has low affinities, but high capacities for Ca2+ allowing it to act earlier during the recovery process to remove high levels of Ca2+ from within the cell. Alternatively, the plasma membrane Ca2+-ATPase (PMCA) and Sarco/endo-plasmic reticulum Ca2+-ATPase (SERCA) pumps, which require ATP, have lower capacities and higher affinities allowing the full completion of the recovery process to prevent cell alteration due to unstable Ca2+…

are covered with ribosomes which create proteins, the proteins are then carried by the cisternae within the endoplasmic reticulum to their place within the cell. While the ribosomes in this case are attatched to the endoplasmic reticulum, this is not their only position, they can also be found freely within the cell cytoplasm (the area within the cell that contains the cell organelles) The S.E.R is in charge of storing,…

Nucleus The Nucleus is an example of a command centre found inside a eukaryotic cell; it’s usually the most prominent organelle, yet it occupies only 10% of the total volume of the cell. If this cell did not have a Nucleus, it would be defined as a prokaryote cell, however if the Nucleus was damaged and not repaired, the cell would simply die. The cell nucleus is enclosed within a double membrane (contains an Inner and Outer Nuclear Membrane) called the Nuclear Envelope, which separates the…

Cells have specific structures within them that allow them to carry out their functions; these structures are called organelles. Organelles have different functions within a cell that is called Division of Labor. They are also classified in two different groups, membranous and non-membranous. Membranous organelles are surrounded by a membrane while of course, non-membranous are not surrounded by a membrane. When describing the organelles and their function, first will be the membranous…

Lens Fiber Differentiation and its effects on certain organelles. This writing exercise analyzes two separate but related scientific articles, “The fate of the Golgi Apparatus and the Endoplasmic reticulum During Lens Fiber Cell Differentiation” and “Coincident Loss of Mitochondria and Nuclei During Lens Fiber Cell Differentiation” both which analyze and study Lens Fiber Differentiation. The writing assignment will be based on four sections:(1) Background of the research (2) Methods used…

In Metaphor and Thought, Hugh Petrie and Rebecca Oshlag argue that “metaphor is one of the central ways of leaping the epistemological chasm between old knowledge and radically new knowledge” (Petrie and Oshlag 583). Scientists compare cognitive domains in order to apply widely “idealized cognitive models” to previously unexplained natural phenomena (Kövecses 173). In absorbing “truly new forms of knowledge and understanding,” learners construct, reject, and accept metaphorical comparisons of…

Both cilia and flagella found protruding from the cell body on the surface of eukaryotic cells are made of many microtubular bundles. Cilia are hair-like structures that protrude from the cells surface in eukaryotic cells they are covered by a plasma membrane. They are formed from a stable bundle of microtubules; these grow from an area in the cytoplasm called the basal body. Microtubules are made of a protein called tubulin, alpha has a slightly negative charge and beta has a slightly positive…

Introduction Some of the most important organs in the human body are muscles. Muscles usually make up 30-50% of the body and are responsible for producing skeletal movement, maintaining body position, and regulating body temperature. In a lab, the process of muscle contraction was investigated by exploring the sliding filament theory. An experiment was conducted to determine whether muscle length played a role in the amount of force a muscle produces. In order to fully understand how a muscle…