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Describe the process of the light-independent reaction.

Carbon dioxide diffuses into the cell leaf through the stomata, and diffuses into the water surrounding the mesophyll cell walls (main site of photosynthesis-packed with many chloroplasts). From here, the ca...
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Answered by Davinia I. • Biology tutor
7386 Views

What is the sum of the first 100 numbers of the following sequence- 4,12,36, 108, .........

This question is about geometric sequences. The first step in solving this question is identifying that each term is multiplied by 3 to get to the next term.Therefore since the formula for finding the sum of...
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Answered by Harry G. • Maths tutor
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solve the simultaneous equation 2y + x = 8 and 1 + y = 2x

The aim of the question is to work out the values for x and y in order to make both equation correct. Therefore the best approach is to try to isolate one of the letters first. step 1. rearrange both equatio...
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Answered by Dina E. • Maths tutor
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Evaluate Portman’s use of harmony in ‘Six Years Later’ in The Duchess with particular reference to the changing circumstances of the heroin. Relate your discussion to other relevant works. These may include set works, wider listening or other.

Given that the music is supposed to set the scene of a classical period, it is unsurprising that Portman uses an oom-cha-cha bass accompaniment in ‘Six Years Later’, a typical characteristic of the waltz sty...
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Answered by David S. • Music tutor
4017 Views

Discuss how the graph of orbital velocities in rotational galaxies against distance from the galactic centre implies the existence of dark matter.

Within the central swell of the galaxy, we can see that the orbital velocity increases almost linearly with distance, which corresponds with the formula for orbital velocity (namely that v=sqrt(GM/r)), as wi...
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Answered by Jack T. • Physics tutor
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