Top answers

Biology
A Level

During the light-independent reaction of photosynthesis, carbon dioxide is converted into organic substances. Describe how

As suggested by the name, the light-independent reaction occurs without the precence of light. To start, carbon dioxide combines with ribulose bisphosphate (RuBP) to produce two molecules of glycerate...

BJ
Answered by Bryony J. Biology tutor
16365 Views

What is the difference between competitive and non-competitive enzyme inhibition?

The active site of an enzyme is the place on the enzyme molecule where the substrate (the substance which participates in the reaction catalysed by the enzyme) normally binds. Competitive inhibitors slow ...

KR
Answered by Krithi R. Biology tutor
22999 Views

What is cross bridge cycling and why is it important in muscle contraction?

In order to understand cross bridge cycling and its importance in muscle contraction, you need to be familiar with the ‘contractile machinery’ that causes muscle contraction and the sliding filament theor...

MS
Answered by Moonisah S. Biology tutor
65705 Views

How are blood glucose levels regulated in humans?

Blood glucose homeostasis involves maintaining the levels of blood glucose within a very narrow limit around a set point (90mg 100cm-3). This is done via hormonal regulation. On one hand, insulin which is...

CM
Answered by Christie M. Biology tutor
4879 Views

What is chromatin?

The length of a strand of human DNA is much longer than you’d think! In fact if it was laid out in a straight line it would be several metres in length. The size of a nucleus is approximately 6 micrometer...

JH
Answered by Jake H. Biology tutor
12381 Views

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