difference between embryonic stem cells and adult stem cells is that the embryonic stem cells are pluripotent stem cells that are from the inner cell mass of the blastocyst. Adult stem cells are undifferentiated cells and are found throughout the body. The adult stem cells are multiplied by cell division to replenish dying cells and revitalize damaged tissues. Totipotent cells are stem cells that are capable of giving rise to any type of cell or a full embryo. A pluripotent cell is a stem cell that can
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The milgram experiment. The three people involved were: the one running the experiment‚ the subject of the experiment a volunteer‚ and a person pretending to be a volunteer. These three persons fill three distinct roles: the Experimenter an authoritative role‚ the Teacher a role intended to obey the orders of the Experimenter‚ and the Learner the recipient of stimulus from the Teacher. The subject and the actor both drew slips of paper to determine their roles‚ but unknown to the subject‚ both slips
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Examination Timetables for 2013 Printed copies of your examination timetable‚ as displayed in myUnisa‚ will be accepted at Examination Venues together with identification documents. To print a copy: 1. Go to your "My Admin" site 2. Click on the link for "Examination Timetable" 3. Ensure that your mouse cursor has identified the correct part of the page (frame) 4. Click on the print function/icon of your Internet browser It is very important that you pay special attention to the dates and times
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potential differ because are excitable cells that communicate by transmitting electrical impulses that are capable of producing rapid electrical signals and depolarization in the interior surface of the membrane which becomes less negative and the exterior surface becomes less positive. Additionally‚ when depolarization reaches a certain threshold‚ an action potential is initiated and the polarity of the membrane reverses. 4. What is the difference between membrane irritability and membrane conductivity
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INTRODUCTION Cotton is a soft‚ fluffy staple fiber that grows in a boll‚ or protective capsule‚ around the seeds of cotton plants of the genus Gossypium. The fiber is almost pure cellulose. The botanical purpose of cotton fiber is to aid in seed dispersal. The plant is a shrub native to tropical and subtropical regions around the world‚ including the Americas‚ Africa‚ and India. The fiber most often is spun into yarn or thread and used to make
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HERBAL PLANTS Bayabas or Guava Scientific name: Psidium guajava Uses: • Antiseptic‚ astringent & anthelminthic • Kills bacteria‚ fungi and amoeba • Used to treat diarrhea in children • For Hypertension‚ diabetes and Asthma • Promotes menstruation Preparation: • Boil one cup of Bayabas leaves in three cups of water for 8 to 10 minutes. Let cool. • To use as mouthwash‚ gargle. • To use as wound disinfectant‚ wash affected areas 2 to 3 times a day. • For toothaches‚ chew the
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NAME:-PUDINA This plant is related to the menthe genus and its aromatic herbs. Many more species grows wild; some of there cultivated. The chief constituent for which these plants are valued are menthol and pappermint oil. this medicinal plant is an erect branched herb upto about 55 cm high. Leaves upto 6 cm long. Flowers small‚ in small brunches‚ borne on axile leaves‚medicinal seeds are also very useful. MEDICINAL USES of pudina :- THE DRIED LEAVES AND FLOWERING TOPS OF THE PLANT MAKE THE DRUG PAPPOERMINT
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using the t-test? A. The difference in variation between two samples is not significant. B. The difference between observed values and expected values is not significant. C. The change in one variable is not correlated with a change in another variable. D. The difference between the means in two samples is not significant. (Total 1 mark) 3. The lengths of a sample of tiger canines were measured. 68% of the lengths fell within a range between 15 mm and 45 mm. The mean was 30 mm. What is the standard
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Bacterial cells are Prokaryotic cells. These cells have several internal structures and surface structures. The cell walls are of two types‚ gram positive and gram negative. Out of all the structures‚ the two selected structures are the cell- wall and endospores. The cell- wall of bacterial cells is found in three distinct shapes such as spherical‚ spiral and rod shaped. The cell wall of the bacterial cells is composed of the proteins and polysaccharides. This is collectively called peptidoglycan
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Diana Rubene LS2B Abstract The chloroplast is most commonly recognized for its vital role in plant cells & protist cells as their main provider of energy. Within this review we are going to discuss what exactly is chloroplast what structures make up this complex & super efficient organelle which is so important not only to plants & protists‚ but also to us. How exactly does it absorb and use solar energy and use it to produce carbohydrates rich with energy that can be passed down the food chain‚
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