Paper On Cell Biology Notes

1308 words - 6 pages

CELL BIOLOGY NOTES:Biological cell There are many single cells and many multi cellular organisms like us. Single cells have organelles that help them function Organelles:· Mitochondrion: cell organelle involved in respiration· Cytoplasm: fluid that surrounds a cell that forms the vacuole· Golgi Apparatus: processing area for the glycoprotein· Endoplasmic reticulum: organelle involved in the synthesis of protein· Vesicles: Packages of substances that are secreted or used by the cell· Nucleus: it is the brain of the cell, it has the genetic information of the cell that determines ...view middle of the document...

· Some white blood cells contain powerful digestive enzymes to eliminate pathogens by breaking them down to the molecular level.· Cells at the back of the eye are sensitive to light stimuli, and thus can interpret differences in light intensity which can in turn be interpreted by our nervous system and brain.Many of these cells contain organelles, though after some cells are specialised, they do not possess particular characteristics as they do not require them to be there. i.e. efficiency is the key, no resources are wasted and the resources available are put to their idyllic optimum.Cell Membrane A cell membrane or the plasma membrane is a semi permeable layer that consists of phospholipid (fat) molecules and proteins. It covers the circumference of the cell Purpose is to ensure that the cytoplasm remains inside, the membrane ensures what is to enter and exit through the cell, thus it is selective.There are a number of ways in which the process of allowing entities to flow in and out of the cell membrane is possible. These include:1. Cell TransportThe way in which ions can be moved through the cell membrane are:· Active transport: it is when a molecule is actively assisted with a carrier through the process allowing it pass a natural concentration gradient.· Passive transport (Diffusion): it is the movement of a molecule through high concentrations (outside a cell) to low concentrations (inside a cell) via a carrier. This process doesn't require energy.· Simple diffusion: movement of molecules from areas of high concentration to areas of low concentrations in a free state. Osmosis of water involves this kind of diffusion through a selectively permeable membrane (plasma membrane)The Breakdown of materials in a cell.Cells can sometimes breakdown complex molecules into simple molecules which can then be rebuilt into what is required by the body with these new raw materials.Such as:Pinocytosis is where the contents of a structure such as bacteria are drank, essentially breaking down molecules into a drinkable form.Phagocytosis is where the contents are eaten.Absorption and secretionAbsorption is the uptake of materials from a cell' external environment. Secretion is the ejection of material.The Breakdown of Materials in a CellIn cells, sometimes it is required to breakdown more complex molecules into more simple molecules, which can then be 're-built' into what is needed by the body with these new raw materials.'Pinocytosis' where to contents of a structure (such as bacteria) are drank, essentially by break...

RELATED

Raven Chapter 4 Guided Notes: Cell Structure - AP Biology - Guided Notes

662 words - 3 pages Name _____________________________ Period _________ AP Biology Date ______________________ 1 of 4 RAVEN CHAPTER 5 GUIDED NOTES: CELL STRUCTURE 1. What are the three features all cells have in common? a. ________________________________________________________________________ b. ________________________________________________________________________ c. ________________________________________________________________________ 2. What are the three

Essay On Biology Notes On Cell Metabolism

437 words - 2 pages *Metabolism:Term used to describe chemical reactions in a cell.*Reactants:Chemicals that react with each other.*Products:Chemicals produced at the end of a chemical reaction.*Anabolic reaction:Reactions that involve the building up of complex molecules from simpler molecules. Enery is required. e.g photosynthesis*Catabolic reaction: Reactions where complex molecules are broken down into simpler molecules. These reactions realease energy.e.g

Effect on Solute Concentration in Dialysis Tubing After 30 Minutes - AP Biology - Lab Report

1662 words - 7 pages for a 30 minute period to pass, and then measured the masses once more after removing the tubes from the water. With this information, we calculated the percent change in mass of the tubings. Generally, the results showed that with the higher concentrations of solutes in tubing, the higher the percent change. Introduction The information available to me came from a variety of sources including my biology textbook, online research, my biology notes

Assignment On No Means No

1904 words - 8 pages NORTHERN VIRGINIA COMMUNITY COLLEGE WOODBRIDGE CAMPUS BIO 141 - HUMAN ANATOMY & PHYSIOLOGY FALL 2014 Instructor: Sima Otsuka, M.S. Biology - Natural & Environmental Sciences Office Phone # (703) 878-5622 Office Room # 310 WAS (New Building) email: sotsuka@nvcc.edu Students may contact me by email, phone, or office visit. If I am not available at the time of contact, I will respond to your inquiry within 2 days if not sooner. COURSE

Evolution From A Molecular Perspective

3352 words - 14 pages .Perutz, Max. 'Species Adaptation in a Protein Molecule', Molecular Biology and Evolution Chicago: University of Chicago, 1983Mammrack, Mark. Biology 112 Lecture Notes. Ohio: Wright State, 1996Wysong, Randy. The Creation-Evolution Controversy. Michigan: Inquiry Press, 1978Lasker, Gabriel. Human Evolution. New York: Holt, Rinehart, and Winston, Inc., 1963Campbell, Neil. Biology Second Edition. California: The Benjamin/Cummings Publishing Company Inc

A Historical Analysis On The Study Of Optics From Pre-Socratic Times Through The Age Of Newton. By Adam R

4219 words - 17 pages this era, and they in turn, caused revolutionary discoveries in other fields, such as biology and cell research with Robert Hooke. However, the evolution of the field of optics did not plateau and become stagnant; on the contrary, some of the most distinguished and modern followed theories on optics emerged just after Hooke published Micrographia. Within Europe during the late 17th century, the prominent figures of the scientific community

RLST 365

3036 words - 13 pages evolution, science education, and religion in the U.S. Additionally, we will consider the implications for religious belief and practice of developments in various branches of science. Thus we will survey, albeit briefly, relevant advances in cosmology, neuroscience, and psychology. Finally, we will consider scientific study of religion informed by advances in evolutionary biology. In all this, we will find ourselves reflecting on the status of

Literary Analysis - Hills like White Elephants - WR 303 - Literary Analysis

1555 words - 7 pages 1 Madison Evans Jake Sauvageau WR 303 Literary Analysis 8/30/18 Ernest Hemingway’s Hills like White Elephants The short story Hills like White Elephants by Ernest Hemingway is a story about a man and woman who are sitting at a bar at a small train station somewhere in Spain. They seem to be having a heated conversation about a mysterious “operation”. The author never explicitly says what the issue is between the man and woman, but it can be

An Analysis of Walter Freeman, Father of the Lobotomy - NKU HNR 151H - Essay

1433 words - 6 pages 1 Brandell Hannah Brandell Prof. Tamara O’Callaghan ENG151H-007 5 May 2017 Walter Freeman and the Invention of the Lobotomy In Steely Library’s digital archives, one of the postcards from the Gilliam family collection is entitled Western Kentucky Asylum for the Insane, Hopkinsville, KY. The postcard dates back to 1915 and portrays a beautiful building, complete with red bricks and white columns. Many of the insane asylums around this time were

Lost Treasure, A story about a psychopathic father - Amity college 11BB - Creative Story

1130 words - 5 pages Lost Treasure When I was a child, my late father and I would spend every moment of the summer season on the sparkling white sand of the beach near our home. We would dance, kicking up the shiny surface so that the droplets glimmered like diamonds in the sunlight. We would lie on our backs and stare at the sky, until the swirling clouds began to take on our imaginative shapes mingled together by our fantastical minds. We would grip imaginary

robotics revolution represent for human employment in New Zealand in the next 30 years - massey university - management

1357 words - 6 pages Rebecca Hastie 11256694 How much of a threat does the robotics revolution represent for human employment in New Zealand in the next 30 years? In order to understand the threats that robotics may pose to human employment in the future, it is important to examine the ways in which robots and computerization are already influencing different employment industries today, and how they have changed our labor practices in the past. If this information

A review of “Indigenous remain ‘asset rich, dirt poor’ 25 years after Mabo”. - ANU - literature review

1115 words - 5 pages Free A review of “Indigenous remain ‘asset rich, dirt poor’ 25 years after Mabo”. In the article “Indigenous remain ‘asset rich, dirt poor’ 25 years after Mabo”, Indigenous affairs editor, Fitzpatrick (2017) presents the socioeconomic situation of the Aboriginal people, using the views of the former prime minister’s advisor, Josephine Cashman. Miss Cashman pointed out that the promises made to the indigenous people, presented in the Mabo case, had not

Comparison of Tom and Jay from Great Gatsby - English - Essay

749 words - 3 pages Annie Shepherd-Barron, Luxmoore Comparison Between the Portrayal of Tom Buchanan and Jay Gatsby in Chapters 1 to 6 Fitzgerald purposefully portrays Jay Gatsby and Tom Buchanan in contrasting ways to emphasise the variety of money within the American market, during the era in which the novel is set. A major difference between the two men is ‘new money’ and ‘old money’, where Gatsby represents ‘new money’, but Daisy and Tom represent ‘old money

term project of marketing strategy - global business management 1 st semester - essay

405 words - 2 pages Boston Pizza Boston Pizza is a Canadian fast food restaurant, which began in Edmonton, Alberta, on August 12, 1964. The restaurant had begun operations on 17 different locations in western Canada by 1970. In 1968 a royal Canadian mounted police officer Jim treliving noticed the growing popularity of Boston pizza and he bought the rights to start a restaurant in British Colombia. He was the first franchisees of Boston pizza. At present, Boston

The advantages and disadvantages of social media - Bucks County Community College - essay

830 words - 4 pages Sioe Liang Ngeow ( Caden ) Alan Rubin COMP110.N12 15 June 2017 Wisely Use Of Social Media In the era of modernity, the application of technology is already inevitable, especially the use of social media. Social media such as Facebook, Twitter and YouTube have come into widespread use globally. As we all know, Mark Zuckerberg, as the chairman and chief executive officer of Facebook is ranked as one of the top ten wealthiest people in the world