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Describe the structure of DNA.

DNA (deoxyribonucleic acid) is a polymer made up of two nucleotide chains held together by hydrogen bonding between nucleotides in a double helix shape.
A nucleotide is made up of a deoxyribose sugar...

Answered by Sim B. • Biology tutor

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25* 3/2

25^3/2= 25^{(3x 1/2)}(25^1/2)³= (square root of 25)³(5)³= 125

Answered by Aisha B. • Maths tutor

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D-day or the invasion of Normandy is one of the turning points of World War II. To what extent do you agree with this statement? Why?

Invasion of Normandy, or better known as D-day happened on June 6th 1944 and was certainly one of the main turning points of WWII for several reasons. Firstly, we can consider the operation successful for...

Answered by Hana M. • History tutor

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Why are some electromagnetic waves harmful to humans?

Electromagnetic (EM) waves form the electromagnetic spectrum with a range of wavelengths. EM waves that have wavelengths shorter than those of visible light include ultraviolet light, X rays and gamma ray...

Answered by Keval H. • Physics tutor

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Prove algebraically that the straight line with equation x = 2y + 5 is a tangent to the circle with equation x^(2) + y^(2) = 5

If a line is a tangent to a circle, it will have exactly one point where the line intersects the circle. Therefore, when we set the equation of the straight line equal to the equation of the circle, we sh...

Answered by Rawdah H. • Maths tutor

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