tag:blogger.com,1999:blog-39714787859291914602009-12-21T19:15:32.725+05:30Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.comBlogger87125tag:blogger.com,1999:blog-3971478785929191460.post-25423918801846440562009-10-26T22:09:00.004+05:302009-12-02T18:42:21.057+05:30

The 2009 Nobel Prize in Physiology or Medicine will go to three American geneticists—Elizabeth Blackburn, Carol Greider, and Jack Szostak. They discovered telomeres, the genetic code that protects the ends of chromosomes, and telomerase, the enzyme that assists in this process, findings that are important in the study of cancer, aging and stem cells. The work for which they received the award

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com0tag:blogger.com,1999:blog-3971478785929191460.post-62866450203216407092009-10-01T22:15:00.001+05:302009-12-02T18:34:19.759+05:30

Many mammals, including pigs, dogs, rabbits and cats have two uteruses. In these animals, multiple foetuses can grow in each uterus. The foetuses share the placenta, but each one has its own umbilical cord. All primates have single uteruses. One in about every 2,000 women worldwide has a double uterus. About one in 25,000 women with uterus didelphys gets pregnant with twins, one to each uterus. (

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com0tag:blogger.com,1999:blog-3971478785929191460.post-18236736426397726142009-09-16T21:58:00.016+05:302009-12-02T18:33:47.580+05:30

Bioluminescence is light produced by a chemical reaction within an organism. The protein which produces the light is generically called luciferin and the enzyme that catalyzes the reaction is called luciferase. The luciferase catalyzes the oxidation of luciferin resulting in light and an inactive oxyluciferin. In most cases, fresh luciferin must be brought into the system, either through the diet

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com0tag:blogger.com,1999:blog-3971478785929191460.post-73159657981953410582009-09-09T06:36:00.001+05:302009-12-02T18:33:14.750+05:30

Albumin ia a class of simple, water-soluble proteins that can be coagulated by heat and are found in egg white, blood serum, milk, and many other animal and plant tissues. Albumen  is the white of an egg which consists of several dozen types of albumin, mostly ovalbumin. Post your comments. To learn how to post comments click here.

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com1tag:blogger.com,1999:blog-3971478785929191460.post-30158212475122024702009-12-02T18:31:00.000+05:302009-12-02T18:31:04.931+05:30

Palpation is the method of 'feeling' with the hands during a physical examination in which an object is felt to determine its size, shape, firmness, or location. Palpitation is an awareness of the beating of the heart. Post your comments. To learn how to post comments click here.

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com0tag:blogger.com,1999:blog-3971478785929191460.post-85650540418219584192009-10-09T21:51:00.000+05:302009-10-09T08:17:29.164+05:30

Think about the answer in your mind and then click "Show Answer" button. Click "Next Question" button to go to the next question. Repeat the same. Total number of questions and the present question No. are displayed at the right hand top corner. Click "ordered" if you are learning this for the first time. To see questions in shuffled order, select "Random". Topic: Genetic Code. // Popup window

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com0tag:blogger.com,1999:blog-3971478785929191460.post-57176472471414204752009-09-06T00:59:00.008+05:302009-10-05T21:42:17.861+05:30

Click on each of the following links to open the animation in a popup window. // Popup window code function newPopup(url) { popupWindow = window.open( url,'popUpWindow','height=600,width=800,resizable=no,scrollbars=no,toolbar=no,menubar=no,location=0,directories=no,status="murali"') } Water Flow and Feeding in Sponges Life Cycle of Obelia Life Cycle of Jelly Fish Protonephridia Vs

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com0tag:blogger.com,1999:blog-3971478785929191460.post-582964638638507142009-10-01T22:11:00.002+05:302009-10-01T22:58:01.370+05:30

An obstetrician is a physician who has successfully completed specialized education and training in the management of pregnancy, labour, and pueperium (the time-period directly following childbirth). A gynecologist is a physician who has a successfully completed specialized education and training in the health of the female reproductive system, including the diagnosis and treatment of disorders

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com0tag:blogger.com,1999:blog-3971478785929191460.post-17941019004710817122009-09-04T18:02:00.001+05:302009-09-16T23:52:00.849+05:30

Post your comments. To learn how to post comments click here.Post your comments. To learn how to post comments click here.

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com0tag:blogger.com,1999:blog-3971478785929191460.post-91285028622305687002009-09-06T12:42:00.002+05:302009-09-16T23:49:52.177+05:30

During the early evolution of cephalopods, dorsoventral axis elongated. This axis became the functional anterior-posterior axis. The anterior-posterior axis of their ancestors shortened and became the functional dorsoventral axis. In the figure given below, morphological orientation is labelled in red coloured lower cased words while the functional orientation is labelled in green coloured

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com0tag:blogger.com,1999:blog-3971478785929191460.post-32437036998526221742009-09-04T18:22:00.002+05:302009-09-16T23:49:30.883+05:30

Post your comments. To learn how to post comments click here.

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com0tag:blogger.com,1999:blog-3971478785929191460.post-8656749850732131662009-08-31T21:27:00.000+05:302009-09-16T23:48:53.257+05:30

// Popup window code function newPopup(url) { popupWindow = window.open( url,'popUpWindow','height=600,width=800,resizable=no,scrollbars=no,toolbar=no,menubar=no,location=0,directories=no,status="murali"') } You can do the interactive exercise in this page itself. If you want to have a larger view, Click on the following link to open the same in a pop-up window Click Here to open in a Popup

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com417.385044 78.486671tag:blogger.com,1999:blog-3971478785929191460.post-81463400698120243072009-09-14T23:01:00.000+05:302009-09-16T23:47:30.320+05:30

Mucus is the noun and mucous is the adjective. e.g. Mucus is the stuff secreted through the mucous membrane! Mucous (adj) (1) containing, producing or secreting mucus: e.g. a mucous tissue (2) Relating to, consisting of, or resembling mucus: a mucous substance. Mucus (noun) The viscous, slippery substance that consists chiefly of mucin, water, cells, and inorganic salts and is secreted as a

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com0tag:blogger.com,1999:blog-3971478785929191460.post-56931403387374956562009-09-15T21:33:00.010+05:302009-09-16T23:46:41.105+05:30

Insolation is the incident solar energy emitted by the Sun, which reaches a unit horizontal area of the Earth's surface. The term is a contraction of INcoming SOLar radiATION. Direct insolation is the solar irradiance measured at a given location on Earth with a surface element perpendicular to the Sun's rays, excluding diffuse insolation (the solar radiation that is scattered or reflected by

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com0tag:blogger.com,1999:blog-3971478785929191460.post-11362245268421039072009-09-15T21:12:00.002+05:302009-09-16T21:39:16.929+05:30

Albedo is the fraction of solar energy (shortwave radiation) reflected from the Earth back into space. It is a measure of the reflectivity of the earth's surface. Ice, especially with snow on top of it, has a high albedo: most sunlight hitting the surface bounces back towards space. (The word is derived from Latin albedo "whiteness", in turn from albus "white") Water is much more absorbent and

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com0tag:blogger.com,1999:blog-3971478785929191460.post-39728951094997918342009-09-15T22:48:00.007+05:302009-09-16T21:23:47.013+05:30

(click on the images to enlarge)      Solstice refers to either of the the two days during the year when the Earth is so located in its orbit that the inclination (about 23½°) of the polar axis is toward the Sun. This occurs on June 20 or 21 (summer solstice), when the North Pole is tilted toward the Sun; and on December 21 or 22 (winter solstice) when the South Pole is tilted toward the Sun. The

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com0tag:blogger.com,1999:blog-3971478785929191460.post-70908370280602524132009-09-15T21:07:00.002+05:302009-09-15T21:36:39.870+05:30

     The solar constant is the amount of incoming solar electromagnetic radiation per unit area that would be incident upon the top of the Earth's atmosphere at a distance of one astronomical unit, or AU(1.496 × 108 km or 9.3 × 107 mi, roughly the mean distance from the Sun to the Earth). The value of solar constant is about 1.96 cal · cm−2 · min−1 (1367 W-1 m−2). Post your comments. To learn how

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com0tag:blogger.com,1999:blog-3971478785929191460.post-89431454430543981312009-09-13T23:26:00.019+05:302009-09-14T01:22:20.399+05:30

function toggleMe(a){ var e=document.getElementById(a); if(!e)return true; if(e.style.display=="none"){ e.style.display="block" } else{ e.style.display="none" } return true; } Sex determination in Drosophila is explained by Genic Balance Theory In Drosophila melanogaster, AAXXY individuals are fertile females. AAX0 individuals are sterile males. Therefore Y chromosome has no role in male sex

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com0tag:blogger.com,1999:blog-3971478785929191460.post-15261559883342723902009-09-04T09:08:00.002+05:302009-09-04T09:18:59.158+05:30

According to an article published in June 2009 Edition of Scientific American, honeybees have been dying in record numbers, yet many commercial crops depend on them for pollination. Entomologists who have been struggling to find an alternative now report that another bee might fill the void.The blue orchard bee, also known as the orchard mason bee, is undergoing intensive study by the U.S.

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com0tag:blogger.com,1999:blog-3971478785929191460.post-58464826553825941412009-09-03T22:22:00.003+05:302009-09-03T22:31:55.742+05:30

Cockroaches can live without their heads. Entomologist Christopher Tipping at Delaware Valley College in Doylestown, Pa., has actually decapitated American cockroaches (Periplaneta americana) very carefully under microscopes. He sealed the wound with dental wax, to prevent them from drying out. A couple lasted for several weeks in a jar. And it is not just the body that can survive decapitation;

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com0tag:blogger.com,1999:blog-3971478785929191460.post-41053630042400584882009-07-31T21:08:00.000+05:302009-09-03T12:43:37.289+05:30

I have received few queries about how to post/viww comments. To view / post comments, click on the comments link on the right hand top corner of the post under which you want to comment. You will see various comments posted under the title.. Below the comments you will see the following:Drop down the menu Comment as: by clicking on the button shown below Select the Name/Url from the drop

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com0tag:blogger.com,1999:blog-3971478785929191460.post-26106795986572508822008-10-13T18:53:00.001+05:302009-08-31T19:47:16.289+05:30

Human alimentary canal and the main functions of various parts are explained in the following animation. To view the animation click the play button. You may also press the "go interactive" button to view functions of the organ which you click.

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com7tag:blogger.com,1999:blog-3971478785929191460.post-83758028046510806362009-08-26T05:35:00.001+05:302009-08-26T05:58:50.807+05:30

Cyanobacteria Bloom: Thanks to algal blooms like this one, the Earth's atmosphere is 21 percent oxygen. It's hard to keep oxygen molecules around, despite the fact that it's the third-most abundant element in the universe, forged in the superhot, superdense core of stars. That's because oxygen wants to react; it can form compounds with nearly every other element on the periodic table. So how did

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com0tag:blogger.com,1999:blog-3971478785929191460.post-7368953402986244722009-08-25T21:52:00.001+05:302009-08-25T21:53:58.097+05:30

Peter Pan stayed forever young in Neverland. In real life, some scientists are looking at telomeres, or regions of repetitive DNA at the ends of our chromosomes, to try to arrive at something like a real version of this story. Telomeres consist of up to 3,300 repeats of the DNA sequence TTAGGG. They protect chromosome ends from being mistaken for broken pieces of DNA that would otherwise be

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com0tag:blogger.com,1999:blog-3971478785929191460.post-5119623873540115452009-08-25T21:31:00.000+05:302009-08-25T21:31:32.405+05:30

Duke University Medical Center researchers said that the supposedly useless appendix is actually where good gut bacteria safely hide out during some unpleasant intestinal conditions. Now the research team has looked at the appendix over evolutionary history. They found that animals have had appendixes for about 80 million years. And the organ has evolved separately at least twice, once among

Murali Krishnahttp://www.blogger.com/profile/01836506754769567958noreply@blogger.com0