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Biology
A Level

What is the difference between cyclic and non-cyclic photosynthesis?

These are the two types of photophosphorylation and they occur in the light-dependent stage of photosynthesis. We will start with non-cyclic photophosphorylation as this is the step we expect to see when ...

SV
Answered by Smit V. Biology tutor
35097 Views

How does blood flow through the heart and body?

Deoxygenated blood from the body goes to the heart via veins. Specificially deoxygenated blood goes through the vena cava into the right atrium. Blood then moves through the atrio-ventricular valves into ...

MV
Answered by Maya V. Biology tutor
2587 Views

Outline the key structural differences between mRNA and DNA molecules and how do these contribute to their different functions?

DNA is a double stranded nucleotide polymer that is configured as a double helix, whereas RNA is a single-stranded polymer that can form secondary structures. This double-stranded nature contributes to th...

VK
Answered by Vicky K. Biology tutor
3242 Views

Describe how mark-release-recapture technique could be used to estimate a population of mosquitoes.

Capture mosquitoes by taking a sample from the area of interest for a set period of time, mark the collected insects with a non damaging mark and release then.Then allow time for the marked mosquitoes to ...

AJ
Answered by Anna J. Biology tutor
4373 Views

What are the functions of glycoproteins in the plasma membrane ?

Glycoproteins have a range of functions and are used in the recognition of different cell types by cells. Cell signalling also involves glycoproteins whereby they act as receptors...

JT
Answered by Jonathan T. Biology tutor
8472 Views

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