Say Cheese!!! Rennin is an enzyme originated from the forth stomach of ruminant animals like cows and goats. Its substrate is the milk protein, Casein. It can also be produced by some microorganisms by genetic engineering techniques. In milk, it denaturates the ca... Continue Reading
?מסוק בלתי אפשרי
בסרטון מוצג מסוק שלהביו נראים שאינם מסתובבים, אבל המסוק נשאר באוויר.
בצעו את הניסוי הבא ובחרו את ההסבר הנכון ביותר לתפועה.
... Continue Reading
خلية الدم الحمراء لا تحتوي الخلية الحمراء الناضجة على ريبوسومات (الضرورية لانتاج البروتينات) وبالتالي فهي غير قادرة على تجديد بروتيناتها ولا تحتوي على ميتوكوندريا (الضرورية للتنفس الخلوي الهوائي) وبالتالي تقوم بتنفس لا هوائي فقط . من ناحية اخرة تمتاو خلية الدم الحمراء بإحتوائها على مادة الهيموجلوبين التي تشكل ثلث حجمها.
ما الفائدة من عدم وجود ميتوكودريا في خلية الدم الحمراء؟
... Continue Reading
The Dead Sea A family traveled to the Dead Sea.The Dead Sea is the lowest place on the earth. (-429 m under the sea level) .Look at the short video they filmed in the way down .You can see the sign along the way marking the point when they pass trough the&n... Continue Reading
arithmetic sequence Arithmetic Sequence
In an Arithmetic Sequence the difference between one term and the next is a constant. In other words, we just add the same value each time ... infinitely.
In General we could write an arithmetic sequence like ... Continue Reading
complex numbers multiplication A сomplex number is represented by z=a+bi , a and b are real numbers and i is the imaginary unit ,satisfying the equation i2 = −1.
For more information about complex numers link to:
http://blossoms.mit.edu/videos/lessons/comple... Continue Reading
Acids and bases in our kitchen! One of the options to determine whether a solution is acidic or basic (alkaline) is to make a pH indicator from red cabbage.How does it work?Red cabbage contains a water-soluble pigment called “anthocyanin”. The pigment changes when it is mixed with&... Continue Reading
Sea level rise and its impact on Israel’s beach and coastal cliffs. Some 40 percent of the world's population lives within 62
miles (100 kilometers) of seashore, putting millions of lives and billions of
dollars' worth of property and infrastructure at risk.The biggest impact is expected to be on areas situated nex... Continue Reading
Why does Earth have deserts? Take a look at a physical map of the world. You can notice that all deserts on our Earth are located at approximately thirty degrees on either side of the equator.
Learn what is the reason for that phenomenon from the video below ... Continue Reading
C Programming! כתוב תוכנית שקולטת את שם הסטודינט , אחר כך קולטת את הציונים שלו ומחשבת את ממוצע הציונים למשל ב -
(HTML , שפתC, אנגלית , אלגברה ליניארית ובליאנית ) , ומדפיסה אותו.
אחרי חישוב הממוצע יודפס ("Exellent" אם הממוצע שווה ל-95 ומעלה , אם הממוצע מ-85 ומעלה יודפס "Very Good", אלא אם מ-75 ומעלה יודפס "Good", אחר יודפס "Bad").
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תוכנה תוכנית אשר קולטת תווים למחרוזת דינאמית עד שיקלט התו "." התוכנית תתציב בקובץ טקסט את התווים בסדר עולה לקובץ טקסט בשם CHAR מ A-Z בקובץ חדש בשם ARR את המספרים מ 0-9 בסדר עולה.
למשל קלט:.Z9DE254DZMA788
בקובץ CHAR:ADDEMZ
בקובץ ARR:2457889
... Continue Reading
Sea level rise risk Sea level is a term describing the altitude of the water at sea(Haifa) picture taken by :dina izGlobal warming due to human activity has countless examples all over the world.Global warming is basically the constant rise of the world average temperat... Continue Reading
Plastic recycling Plastic is manufactured by the polymerization
process, which connects monomers to create polymers. Common types of polymers in
our lives are presented in the table below:
Example... Continue Reading
Multimedia Questions
Inquiry Questions
