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What is the difference between mRNA and pre-mRNA in a eukaryotic cell?

The major difference between pre-mRNA and mRNA is that pre-mRNA is the immediate product of transcription which is comprised of both exons (coding sequences) and introns (non-coding sequences). After transcr...
MY
Answered by Matt Y. • Biology tutor
45573 Views

Consider the infinite series S=Σ(from n=0 to infinite) u(down n) where u(down n)=lim (from n π to (n+1) π) ((sin t)/t) dt. Explain why the series is alternating.

For the first part of the question we need to try and understand what is actually happening – we have the sum of an integral – where we are summing a sequence of definite integrals. So when n = 0 we have the...
SD
Answered by Stuart D. • Maths tutor
6532 Views

Find an equation of the curve with parametric equations x=3sin(A) and y=4cos(A), in the form bx^2+cy^2=d.

x 2 =9sin 2 (A) and y 2 =16cos 2 (A)Since sin 2 (A)+cos 2 (A)=116x 2 +9y 2 =16 x 916x 2 +9y 2 =144
PV
Answered by Pranav V. • Maths tutor
4151 Views

Describe the changes in the lungs during inspiration

During inspiration, the intercostal muscles contract, moving the sternum up and out. This increases the thoracic volume, hence decreasing the pressure. The pressure gradient set up causes air inflow from out...
DN
Answered by Dhaval N. • Biology tutor
3320 Views

Outline and Explain the Logical and Evidential Problems of Evil for the Existence of God. (30)

The original Problem of Evil is often attributed to the ancient Greek philosopher EPICURUS (341-270BC). If God can do nothing about the evils in the world, then He is not omnipotent.If He does not see them, ...
MK
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