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What is meant by the term "degenerate" when describing DNA? Why does it occur and what are its implications for protein structure?

"Degenerate" refers to redundancy in the genetic code. Amino acids, the building blocks of proteins, are encoded by codons of three nucleotide bases. Some amino acids are encoded by more than on...

Answered by Abigail M. • Biology tutor

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Express (3+ i)(1 + 2i) as a complex number in the form a+bi where a and b are real numbers.

One can treat complex multiplication as polynomial multiplication, but remembering i^2 = -1. To perform polynomial multiplication, multiply each term one by one, then add them together. Hence (3+i)(1+2i) ...

Answered by Alvin S. • Maths tutor

9991 Views

A ball is rolled, travelling 10 m north in 5s, then 10 m east in 10s. What is the total distance and average speed of the ball? What is the total displacement and average velocity of the ball?

First to note is how average speed, v, distance, d, and time, t, are related. This is given by v = d/t. The journey is split into two parts, but we are only asked for the total distance and average speed....

Answered by Alvin S. • Physics tutor

3115 Views

Give 3 ways in which the properties of ATP make it a suitable source of energy in biological processes.

Break down involves a single reaction (speed)
Energy is released in small, manageable amounts.
Soluble

Answered by Molly T. • Biology tutor

14429 Views

(Using the Quotient Rule) -> Show that the derivative of (cosx)/(sinx) is (-1)/(sinx).

This question is a typical example aimed to test the student's understanding of the quotient rule, a technique which is used very often in calculus problems. Answer: For a function f(x) = cosx/sinx = u/v,...

Answered by Mark H. • Maths tutor

17886 Views