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Why is there both cyclic and non-cyclic photophosphorylation in photosynthesis? (A level)

Non-Cyclic photophosphorylation is a linear process involving the entire electron transport chain. The products of non-cyclic photophosphorylation are ATP (generated by a build up of H+ inside the lumen of t...
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Answered by Flo A. • Biology tutor
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Solve simultaneously, x+y=2 and 4y^2-x^2=11

(1) x + y = 2(2) 4y 2 - x 2 = 11 Rearrange (1) to x= 2-y & substitute x=2-y into equation (2) Simplify the new equation to 3y 2 +4y-15 = 0, use quadratic formula or simplify to (3y-5)(y+3)=0 and solve to...
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Answered by Nicholas N. • Maths tutor
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What is the structure of atoms

There are three elementary particles that make up the atom. Those being: the proton, the neutron, and the electron. Both the proton and the neutrons are nucleons, and they reside in the nucleus. The electron...
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Answered by Cillian R. • Physics tutor
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The Imperfect Tense – When do I use it?

The imperfect tense is used to describe repeated or continuous actions in the past. It also sets the scene in a narrative, describing places, objects, people, time and the weather in the past. The imperfect ...
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Answered by Alice G. • Spanish tutor
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The equation of the line L1 is y=3x–2. The equation of the line L2 is 3y–9x+5=0. Show that these two lines are parallel.

The first thing that you should know when wanting to find out if two lines are parallel are the features of a parallel line. These key features include never intersecting lines which means they continue fore...
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Answered by Karina P. • Maths tutor
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