Top answers

Biology
A Level

How is ATP used in myofibril contraction?

ATP is bound to the myosin head to cause detachment of the head from the actin filament, the ATP is then hydrolysed and as a result the myosin head reattaches to the actin filament. The now hydrolysed ATP...

SW
Answered by Sam W. Biology tutor
2419 Views

State where most water reabsorption takes place in the kidney. State also the process by which the water is reabsorbed.?

Most water reabsorption takes place in the proximal convoluted tubules, part of the nephrons in the kidney. Water is reabsorbed by a process called osmosis; the diffusion of water from an area of high wat...

DR
Answered by Dearbhail R. Biology tutor
37219 Views

Describe the structural differences between DNA and RNA.

DNA is a double stranded macromolecule which is composed of nucleotides . The two DNA stands, joined by hydrogen bonds between the nucleotides and running antiparrallel to each other form a double helix s...

AA
Answered by Annie A. Biology tutor
11107 Views

Describe the events of translation in DNA to produce mRNA

answer should include the use of helicase to 'unwind' DNA, breaking of hydrogen bonds, template and/or coding strand, free RNA nucleotides in the nucleus binding to exposed bases, attraction of base pairs...

BS
Answered by Bronte S. Biology tutor
2588 Views

How does chemiosmosis work?

Chemiosmosis is the method which cells use to create ATP for energy. It works a bit like a water wheel creating power. ATP synthase is like a water wheel in the inner membrane of mitochondria which create...

MT
Answered by Max T. Biology tutor
26579 Views

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