989 words - 4 pages
Access to Higher Education: Nursing and Midwifery
Word count: 752 & bibliography
This assignment will discuss about the Prokaryotic and Eukaryotic cells by comparing their structure and function: It will talk about the similar components they have and their function of the two cells (prokaryotic and Eukaryotic) and then it will talk about the different components and their function in the cell. It will relate the structure to function in two specialised eukaryotic cells and the structure of the cell membrane to its function of movement of substances into and out of the cell.
Regarding to the cell theory all living
780 words - 4 pages
The term cell reproduction refers to the process of a cell splitting to form two similar cells; this is known as cell division. Eukaryotic cells reproduce by mitosis or meiosis; and prokaryotic cells use binary fission as a means of cell reproduction. (Simon,Reece,Dickey.(2010))
Mitosis is defined as a process of asexual reproduction in which the parent cell divides in two producing a replica, with an equal number of chromosomes in a haploid cell. The product of mitosis is two diploid daughter cells. The process of mitosis creates everything accept sex cells; and occurs in all organisms. The steps of mitosis are Interphase, Prophase, Metaphase, Anaphase, Telophase and
3970 words - 16 pages
The process of extracting bacterial DNA consists of dissolving the cell wall with a digestive buffer (in the white-capped bottle) available as a commercial kit. The buffer contains proteolytic enzymes that "eat" the cell wall. This step may take several hours.
Since we will be using other enzymes in the next step, we need to get rid of the proteolytic enzymes before we can proceed. The enzymes are denatured by heating the sample in a water bath at 100°C. Next, the cellular debris is spun down in the centrifuge and appears as a solid deposit (pellet) at the bottom of the tube. The DNA is contained in the supernatant (the liquid), which is then transferred to the PCR tube.
778 words - 4 pages
Sickle Cell Anemia
May 29 2014
Sickle Cell Anemia, Also known as Hemoglobin S Disease (HbS Disease), spreads along the lines of anemic or iron deficient blood types . Hemoglobin is the red protein that is responsible for transporting Oxygen in vertebrates. It is composed of 4 protein subunits, two called Alpha – globin and two called Beta-globin. The HBB gene, located on the 11th Chromosome (11p15.4 specifically and its locus MIM number is141900), provides “Instructions “ for making the beta globin but unfortunately nothing in life is perfect and mutations are bound to
770 words - 4 pages
BIO 264 - Human Anatomy and Physiology
Chapter 3 – Cell Biology and Genetics PART A
1. Describe the structure of a typical animal cell. Describe the structure and function of each of the cell parts labeled in Figure 3.1, plus cytosol, cytoplasmic inclusions, and flagella.
* Plasma Membrane- Outer boundary of the cell, through which the cell interacts with its external environment.
* Nucleus- It directs cell activities, most of which take place in the cytoplasm.
* Flagellum- Extension of the plasma membrane containing doublets of parallel microtubules./ in humans, it propels spermatozoa.
* Microvilli- Extension of the plasma membrane containing microfilaments. /increase
660 words - 3 pages
Stem Cell Research Free Write
In todays world of medicine, stem cell research is considered to be the most modern of all forthcoming forms of therapy, when in fact it is not. Stem cells were discovered in 1961 by Dr. James Till and Ernest McCulloch who both worked at the Ontario cancer institute at the time. The existence of stem cells and their ability to essentially transform into any other type of cell in the human body was an incredible first step in the long since developed and debated topic of stem cell therapy. Stem cells were immediately suggested as a cure all for diseases originally thought to be incurable and chronic illness; none more notorious than Cancer. Since
2739 words - 11 pages
Embryonic Stem Cell Research
Almost everyone in the world knows someone who has suffered because of disease. All people whose lives have been devastated by disease have asked or hoped for a cure. What everyone should know is that a cure is possible, but some beliefs are stopping cures from being found. Embryonic stem cell research could provide solutions to medical illnesses that scientists and doctors have been searching for for years. However, certain belief systems argue that an embryo is a person, and destroying an embryo for research is murder. The essential question concerning stem cell research is summed up by this quote from President Bush, “"As I thought through this issue I
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Stem cells have offered much hope by promising to greatly extend the numbers and range of patients who could benefit from transplants, and to provide cell replacement therapy to treat debilitating diseases such as diabetes, Parkinson's and Huntington's disease. The issue of stem cell research is politically charged, prompting biologists to begin engaging in ethical debates, Stem cell research offers great promise for understanding basic mechanisms of human development and differentiation, as well as the hope for new treatments. However, human stem cell research also raises sharp ethical and political controversies. This paper will discuss the types of stem cells as well as some of
732 words - 3 pages
Cell Phones and the Curve
For this project we will analyze cell phones and the impact they have on current economic trends and realities on politics, the workplace and the quality of individual lives. There are two brands of cell phones that are almost identical except for some minor features and they are the A-Phone and the Pomegranate. First off the pomegranate is a mobile phone concept that became a viral mock campaign funded by the government of Nova Scotia in order to build interest in the small Canada province. The functionality or features of the fake device has gradually been introduced partially into mobile phones over the years since the inception of the marketing campaign
382 words - 2 pages
My Reaction Paper”
During my first encounter with Miracle in Cell No. 7, I burst out into laughter because of Lee Yong Goo, the father of Yea Song, because he’s like a kid. I admire him because every sacrifices he’s doing is all for the sake of her child’s happiness. Even thought he’s childish, he never fail to take good care of his daughter. I am also glad with Yea Song, because even though her father acts like a kid, she always manages to wear a smile at all times and he loves her father extremely. But when Lee Yong Goo had been accused with the crime he never did, the joy in my face faded and replaced with a sad expression. I got pissed because Lee Yong Goo didn’t got the justice he
1258 words - 6 pages
Outlaw the Use of Handheld Cell Phones While Driving
November 9, 2009
Cell phones should be banned to make for a safer country. When considering whether or not cell phones should be allowed to be used while driving, generates two different positions. The use of a cell phone while a car is in motion should be made illegal throughout the United States with exceptions of emergencies. Cell phones are a distraction and our brain is better at concentrating on one thing at a time, while using a cell phone you have a slower reaction time and it will reduce the amount of vehicle accidents. Some argue that cell phones cause just as much distraction as many other things
823 words - 4 pages
Developmental Biology Lab Video
A dozen eggs, time-lapse microscopy of cell development
Society of developmental biology
The Video reviewed early development, and migration in different species of animals and plants. Early development was discussed in the video, with narration to the time-lapse microscopy.
1st cleavage involves nuclear envelope breakdown, spindle formation, nuclear division formation, and cytokines. Cleavage is synchronous occurring approximately every 30 minutes. Then there is blastocoel formation, and the blastomeres move to the periphery. Also basal blebbing of the cells can be seen. Primary mesenchyme cells migrate from inner cell
322 words - 2 pages
“WHY BANNING THE USE OF CELL PHONES WHILE DRIVING SHOULD BE MANDATORY NATIONWIDE”
TITLE: Why Banning the Use of Cell Phones While Driving Should Be Mandatory Nationwide?
A. General Purpose: Persuade
B. Specific Purpose: Persuade my audience that banning the use of cell phones while driving should be mandatory nationwide.
C. Central idea: Cell phones are as common in the market today as a wrist watch on your arm. Everyone has one including the very young as well as the extreme elderly. People are constantly talking, texting, playing games or surfing on the Internet on their smart phones. These devices are harmless until individuals decided to get behind the wheel and drive
4859 words - 20 pages
This Chapter deals with the proposed Business Name, Title of the Study, store location, Business Logo, Brief Description of the project, General Objectives, Research Methodology and Survey.
Proposed Name of the Business
The future entrepreneurs come up with Golden Glow as the name of the business. The word “Golden” describes the color of deep fried empanada. The word “Glow” comes from how vegetables can contribute on our health. ''Golden Glow’’ is an easy name to recall.
Title of the Study
The Profitability of Veggie Empanada in Barangay Bubukal, Sta. Cruz, Laguna
The business will be located in Barangay Bubukal, Sta. Cruz, Laguna
920 words - 4 pages
NUTRITION FOR THE ELDERLY: Nutrition is the intake of food, considered in relation to the body’s dietary needs. Good nutrition is essential for survival, physical growth, performance, health and well-being across the entire life-span. A good nutrition adequate well balanced diet combined with regular physical activity is a cornerstone of good health. While poor nutrition can lead to reduced immunity, increased susceptibility to disease, impaired physical and mental development, and reduced productivity. Many elderly people have unique barriers
1124 words - 5 pages
PROKARYOTE AND EUKARYOTE
16th century Magnifying glass was introduced magnification 5 x
Anton van Leeuwenhoek (1683) Invent a primitive microscope (magnification = 266 x) Looked at everything from rainwater to tears saw swimming living cells (microbes) He called as “animalcules”
Robert Hooke (1665) See non-living particles invents the term “cell” after viewing slices of cork through a very primitive microscope
The discovery and early study of cells progressed with the invention and improvement of microscopes in the 17th century Light microscopy
521 words - 3 pages
Anaphase 1 - The fourth stage of the first meiotic division (meiosis I), during which maternal and paternal homologous pairs are separated on microtubules.
Anaphase 2 - The fourth stage of the second meiotic division (meiosis II), during which either maternal or paternal sister chromatids are separated on microtubules.
Chiasma - The region of physical linkage between maternal and paternal homologous pairs during genetic reassortment. Marks the location of crossover between two nonsister chromatids.
Diploid number - The total number of chromosomes present in a cell.
Gametes - Cells with the haploid number of chromosomes. Gametes are created out of germ cells. The sperm and eggs
511 words - 3 pages
14 March 2014
Building Electrochemical Cells
These set of instructions will act as a guide for the construction of an electrochemical cell in accordance with measuring the EMF. Electrochemical cells were first invented by the Italian physicist Alessandro Volta; the electrochemical cell consisted of the zinc (2+) cation and the copper (1+) cation as well. The electrolyte consisted of a sulfuric acid and water mixture. The purpose of the electrochemical cell is to convert the chemical reaction in this case between zinc and sulfuric acid into electrical energy, thus the term “electro-chemical.” Lastly, there are some downfalls to the creation
338 words - 2 pages
rises causing slight changes in its structure that increase its ability to bind oxygen. As pH falls hemoglobin picks up hydrogen ions and its affinity for oxygen decreases. Increasing carbon dioxide concentration in your tissues cause a decrease in pH, which in turn forces hemoglobin to dump the oxygen it's carrying so your cells can use it for energy
3. Diseased cells have lower than normal ability to transport oxygen. Sickle cell hemoglobin is stiff and sticky. They stick together and do not flow through vessels easily causing blockages. The blockages caused by sickle cells
1144 words - 5 pages
functions within the organism. A cell consists of many components. These are plasma membrane, the cytoplasm, the endo reticulum (rough and smooth), Golgi apparatus, lysosomes, mitochondrion and the nucleus. Each of these parts of the cell, play an important role, if it did not have all these parts then the cell would not work in and what it is meant to.
The cell membrane- (or plasma) is a thin skin around the cell. It gives the cell its shape and controls what goes into and out of the cell. If the plasma membrane was to get damaged in any way, and it wouldn't let anything enter or exit it, then we would not be able to get oxygen in and let carbon dioxide out. This means that we wouldn't be
525 words - 3 pages
Stem Cell Research
Stem cells have the remarkable potential to develop into many different cell types in the body during early life and growth. In addition, in many tissues they serve as a sort of internal repair system, dividing essentially without limit to replenish other cells as long as the person or animal is still alive. When a stem cell divides, each new cell has the potential either to remain a stem cell or become another type of cell with a more specialized function, such as a muscle cell, a red blood cell, or a brain cell.
Different types of stem cells
Embryonic stem cells - These stem cells come from embryos that are three to five days old. At this stage, an embryo is called
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, NMR, MRI
Chapter1 : Page 6- intro to organ systems, different characteristics
Cytology: study of the cell
Why study cells?
- Cells concentrate needed molecules, expel waste, synthesize larger molecules with complex functions, generate/store/use energy for metabolic processes, move (transport)
- Diseases begin at the cellular level (ex: cells dividing uncontrollably.. cancer)
- You are made of 75 trillion cells
Cells divided into:
- Sex cells: sperms/eggs
- Somatic cells: cells of the body
Looking at the structure of a cell can show the cell’s function
Environment of the cell
- Cytoplasm (intracellular fluid)
- Cytoplasm (intracellular fluid
- Extracellular fluid
416 words - 2 pages
In today’s society it seems that having a landline phone is not a big must anymore. There are very few people that have one anymore. Since cell phones have become as popular as they have landlines have seemed do diminish.
The most common reason to choose a cell phone is that in most areas, the cost of a cell phone plan is lower than the cost of a landline, especially when you count the cost of a long distance calling plan. Most cell phone providers today offer unlimited talk to anywhere in the United States. Also, if you have a family plan that can all bundle everything together. You will have a number that only you can give out and that won’t be published in a phonebook for random
742 words - 3 pages
overview of other types of microscopes.
D. Order of content in lecture: 2.1, 2.2 Light Microscopes emphasizing bright-field microscopy up to p. 26, Staining: 2.3 p. 31-34; Sec 2.2; Other microscopes in sec 2-2 p. 26-31; sec 2.4-2.5.
E. This will be covered 8/26, 8/28, and part of 9/2.
F. Have a general idea on how all of the microscopes work that I do not cover in depth. My emphasis will be on: Brightfield, fluorescence, and electron microscopy.
Cell Structure- Ideal Lecture order: (Chapter 3 &4)
DATE | Text Chapter | Lecture Topic |
| | Prokaryotic Cell Structure & Function. Ch 3 discusses the structure of Bacteria while Ch 4 discusses Archaea. Note
2545 words - 11 pages
cell (the data area enclosed by blank rows and blank columns).In a PivotTable, it selects the entire PivotTable report. |
CTRL+: | Enters the current time. |
CTRL+; | Enters the current date. |
CTRL+` | Alternates between displaying cell values and displaying formulas in the worksheet. |
CTRL+' | Copies a formula from the cell above the active cell into the cell or the Formula Bar. |
CTRL+" | Copies the value from the cell above the active cell into the cell or the Formula Bar. |
CTRL++ | Displays the Insert dialog box to insert blank cells. |
CTRL+1 | Displays the Format Cells dialog box. |
CTRL+2 | Applies or removes bold formatting. |
CTRL+3 | Applies or removes italic
2662 words - 11 pages
Assignment 5: Persuasive Paper Part 3: Possible Disadvantages, Answers, with Visuals
Research and Writing ENG 215
Professor Julie Davenport
June 14, 2015
Should regulations regarding the use of cell phones while driving be standardized?
Over the last four decades, mobile devices have become the trademark of our society.cell phones and other mobile devices have inundated our society At any given time; we can see drivers talking or texting in a moving vehicle. According to Brenner (2013), 87% of American adults and 78% of teenagers own a cell phone. The scary part is that almost two-thirds of cell phone possessorss’ are distracted by talking or texting and while they
1347 words - 6 pages
Wednesday: February 26
I. Desired Results
a. Unit Enduring Understanding(s) –
i. Students will understand the structures and functions of cell organelles
ii. Students will understand how each organelles help the living organisms
b. Unit Essential Question(s) –
iii. Why each organelle has a specific function to carry?
iv. Where do all cells come from?
c. Daily Learning Objective
v. Students will know the differences between eukaryotic and prokaryotic cells –
I. GPS Standards
SB1: Students will analyze the nature of the relationships between structures and functions in living cells.
1350 words - 6 pages
BIO Research Paper
14 April 2014
Over the past decade the debate between the relationship between brain disease and cell phone radiation has been a current issue. Whether or not the radio frequency cell phones put out can lead to brain bombardment of any type such as brain tumors, brain disease, etc. There have been many case studies, experiments, and the use of high levels of technology to be able to determine the answers to such a controversial issue. Through the explanation of different levels radiation and what radiowave/frequency the cell phones emits, the scientific effect of the radiation on the brain, and lastly through the research to answer the
359 words - 2 pages
microscopy and immunoprecipitaion I hope to prove that QDs are able to attach with actin.
I plan to culture three types of cells, 293, HepG2, Hela. A viability test will be done to establish a concentration for further experiment that does not exert harm on cell growth and survival of all three types of cells. I will also be looking
The nuclei will be stained with 4',6-diamidino-2-phenylindole (DAPI, blue) and the cytoskeleton with FITC-conjugated phalloidin (green). The fluorescence for nuclei, cytoskeleton and QDs will be assessed through confocal laser scanning microscopy. All three types of cells will be examined by confocal microscopy. Through
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o Cell Phones—Data overtakes voice when it comes to cell phones but can use both. People see voice as intrusive and as a waste of time, saving it for a last resort. According to the CTIA, the number text message sent last year was up 50% on the year before. Add to that email, the multitasking nature of SMS and instant-messaging, and the other non-voice-based communications available on our phones today.
o Landline phones—Landline phones use both according to a few articles. Not much information given.
o SMS / Text Messaging—Also goes with data usage with cell phones. Since SMS used signaling channel as opposed to dedicated channels, these messages can be sent/received simultaneously with
875 words - 4 pages
that plasma serves, it maintains blood pressure and volume to supplying critical proteins for blood clotting and immunity. It also helps to maintain a proper balance in the body by serving as the medium of exchange for minerals vital and critical to cell functioning such as sodium and potassium ("About Blood - Blood Facts,” 2011).
Red blood cells get their color from hemoglobin, a complex protein containing iron that carries oxygen and carbon dioxide throughout the body. Delivering oxygen to different parts of the body and removing waste is vital to one's health because if red blood cells didn't do this, the body would slowly die. Oxygen is transported throughout the blood because as it
499 words - 2 pages
University of Phoenix Material
Differentiating Between Market Structures Table
Compare the four market structures by filling in the table.
| |Perfect competition |Monopoly |Monopolistic competition |Oligopoly |
|Example organization |Meat Packaging Company |Satellite & Cable Company |Clothing Company |Cell Phone Maker Company |
|Goods or services produced by the |Packaging meats for sale at market |Providing tv service for purchasers of |Provide clothing
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Plant Systems :
Shoot System (above ground):
the stems and leaves of a plant;
stems: bear structural support and, in some cases perform photosynthesis
leaves: specialized for photosynthesis
Root System (below ground):
the roots of a plant
roots: anchors the plant and absorbs the water and mineral nutrients the plant needs
- Anatomy of Plant Cell: *chloroplast*vacuole*cell wall
- Plant Cells
1. Parenchyma (mature=alive):
- spherical shape
- cell walls flatten when packed together
- felxible thin walled
- wide range function
- storage, photosynthesis, gas exchange, protection, tissue repair/replacement
- leaves/stems: contain many chloroplasts to make glucose
1765 words - 8 pages
format is Arial 10 point Normal. |
4 | Enter column headings :BUDGET ITEM, PROJECTED COSTS and the 12 months for the year: JANUARY THROUGH DECEMBErYou may abbreviate the months as follows: JAN, FEB, MAR, APR, MAY, JUN, JUL, AUG,
SEP, OCT, NOV, DEC | 0.25 | All column headings must use the following text formatting:Arial 10 pointBoldText centered in columnAll capital letters |
5 | Enter your personal budget categories/labels (either your own or the list provided) in the rows under the column heading BUDGET ITEM.A minimum of 9 categories is required. | 0.25 | Text format is Arial 10 point, Normal. Align text Left in the cell. |
6 | Format all cells containing numeric data to Currency
672 words - 3 pages
Genetic Mutation and Melanoma
Malignant melanoma is a potentially serious type of skin cancer due to uncontrolled growth of pigment cells, called melanocytes. A number of genes play a role in melanoma, including inherited genes.
Genes produce proteins that perform specific tasks and act as messengers for the cell. It is essential that each gene has the correct instructions or “code” for making its protein so that the protein can perform the proper function for the cell.
Many cancers begin when one or more genes in a cell are mutated, creating an abnormal protein. An increased risk of melanoma occurs when specific gene mutations are passed within a family from generation to
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- change in a single base pair that does not change amino acid
nonsense- change in base pair that adds in early stop codon
frameshift- an insertion or deletion of 1 or 2 or more nucleotide bases
9.)a.) By what process do spontaneous point mutations arise? replication
b.) Why are spontaneous mutations rare in living organisms? Because DNA polymerase has proofreading capabilities
c.) Based on your knowledge of bacterial reproduction, if a parent cell has a mutation, does it’s progeny also have that mutation? yes
d.) This type of mutation transfer is referred to as ___________vertical gene________________________ transfer.
10.)a.) Differentiate between horizontal
286 words - 2 pages
Carbohydrates are found as monosaccharides, disaccharides, and polysaccharides or complex carbohydrates. They function in energy storage (starch&glycogen), signaling (glycoproteins and glycolipids, e.g. blood group determinants), fuel the nervous system and muscle (and virtually all cells, although there are distinct cell type specific differences in choice of primary fuel molecule), are parts of nucleic acids (genes, mRNA, tRNA, ribosomes), and as cell surface markers and signaling in glycolipids and glycoproteins, are part of connective tissue (heteropolymers; glycosaminoglycans), cell wall components (cellulose, hemi-cellulose) made of polymers that are
319 words - 2 pages
• Cell Phones – Cell phones I would say uses both data and voice. You can use these devices to talk to other people via voice, and you can use it to access the internet via data services. Cell towers are essential for either of these functions to work.
• Landline Phones - Landline phones originally were voice only. Created to carry audio from human beings. With the invention of modems, and then to IDNS and now DSL, it is also used as data as well.
• SMS / Text Messaging – SMS / Text messaging uses Data services. These services allow you to send and receive blocks of characters (ie letters / numbers) between devices. There are no vocal communication done between these devices.
736 words - 3 pages
“Driving is Dangerous Enough”
Drivers around the world have discovered a new way to make our highways unsafe for all. It is as dangerous and as lethal as driving while under the influence of drugs and alcohol. Many of us do this on a daily basis. On your way to class this morning, how many times did you receive a call or make a call on your cell phone? How many times did you receive a text or send a text? Some may say 5, some may say 10 but chances are no one will say 0.
Would you try to cook a meal or even play baseball while driving your vehicle? These require our full concentration, in order not to burn what you are cooking or to pitch a strike. Driving is
997 words - 4 pages
Explanatory Essay (REVISED)
November 7, 2014
The Evolution of technology and communication from the past twenty years until today
In this day and age, there is hardly a need for face to face communication. With cell phones, email, and social media, we have and are becoming more and more socially awkward. Let’s go back twenty years from now, when most of today’s technology didn’t even exist. No one really had cell phones, or computers, maybe a beeper (pager) if you were lucky. So how did we get to where we are today? Today if a parent wants to find their child they have to text him or her, break ups happening via text or email, doctors are having video conferences
1232 words - 5 pages
ethics. Once teachers only had to be concerned about the basic rules of classroom etiquette and they could govern their classroom visually. Now teachers have to implement rules and guidelines to ensure that technology in the classroom is being used for its intended purpose to protect students from lurking dangers that are unseen by the human eyes.
Before one can understand the importance of employing internet security in the classroom, they must first know the issues that arise from the use of technology in the classroom. Some think of cell phones as just a convenient means of communication, whereas others see it as a way to lure innocent victims so that they can satisfy their own personal
1107 words - 5 pages
secretion of the enzyme (1 mark)
-The enzyme is secreted as Vesicle (idea pinch off the membrane of golgi) and (travel to cell surface membrane)
2. Outline 2 factors which are classed as a risk factor for CHD (2 marks)
-Diet ;; e.g Excess Saturated fat/LDL proteins/High Salt Conc.......Neutral: Cholesterol
-Lack of Exercise
-High blood pressure
b. Some cardiac tissues dies and this leads to Myocardial infarction explain how this happens (3 marks)
-Block Coronary artery/Reduce flow of blood to area of heart
-Deprive Cardiac muscle cells of Oxygen/Reduction in Aerobic respiration of muscle cell/ no longer can prodcue ATP
3 a. Describe
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14. Liver stem cell niche 17
15. Conclusion 18
16. Abbreviations 19
17. References 20
The liver is found in all vertebrates, and is typically the largest visceral organ. Its form varies considerably in different species, and is
676 words - 3 pages
January 25, 2015Psychology of Women Cultural Representation/ Girl CellThe Threat of the Girl Cell The “girl cell” in its simplest form is the act of emotion. The girl cell is not a physical cell, but it is something that everyone has, man or woman. It is everything that society does not want one to feel or to be; a woman. When listening to Eve Ensler I realize how real the girl cell is and how much people are intimidated by it and hide it. The idea of showing emotion scares most because people want to become numb to things like vulnerability and compassion. I personally feel like there was a point in time where I did not want to show emotion because I felt
8387 words - 34 pages
Human embryonic stem cells (hES cells) are currently discussed not only by the biologists by whom they were discovered but also by the medical profession, media, ethicists, governments and politicians. There are several reasons for this. On the one hand, these ‘super cells’ have a major clinical potential in tissue repair, with their proponents believing that they represent the future relief or cure of a wide range of common disabilities; replacement of defective cells in a patient by transplantation of hES cell‐derived equivalents would restore normal function. On the other hand, the use of hES cells is highly controversial because they are derived from human pre
1361 words - 6 pages
By the third day of development, the human egg or zygote it is now a small mass called the blastocyst. By 1-2 weeks the blastocyst’s inner cell mass separates into three layers. The Mesoderm is responsible for developing muscles, bones, blood, circulatory system, teeth, connective tissues and kidneys. The endoderm is responsible for the internal organs such as the stomach and intestine. And the ectoderm is responsible for things such as our skin, hair, sweat glands, salivary glands, brain, spinal cord, and PNS. By week 2 of development the ectoderm will also start to thicken and fold in on itself to form the neural groove and by 2-8 weeks it will come together and form the neural tube. The
2438 words - 10 pages
* A scientific theory is based on many observations, observations help us make predictions
* The cell theory states that cells are present in all living cells, cells are the smallest units of life and cells come from pre-existing cells
* Under a microscope, cells are seen to contain small structures called organelles.
* Cells of living things are said to contain a nucleus (eukaryotic) or no nucleus (prokaryotic)
* Viruses cannot be classified as cells as it relies on its host cell for its nutrients and reproduction
* Viruses do not respire
* Multicellular organisms (plant/animal cell) are composed of specialised tissues