Top answers

Biology
A Level

Give 3 ways in which the properties of ATP make it a suitable source of energy in biological processes.

  1. Break down involves a single reaction (speed)
  2. Energy is released in small, manageable amounts.
  3. Soluble
MT
Answered by Molly T. Biology tutor
13441 Views

What are the light-dependent reactions of photosynthesis?

In the light-dependent reactions, a photon of light hits an electron located in the thylakoid membrane of the chloroplast in photosystem II. This causes the electron to gain energy and jump to a higher en...

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Answered by Sarah C. Biology tutor
6235 Views

Briefly describe the mechanism of muscle contraction.

In muscle, myosin protein has 'heads' that act as cross-bridges as they bind to actin, another protein. When ATP binds to myosin, its head detaches from actin, swings forward and rebinds. Rebinding releas...

HG
Answered by Hester G. Biology tutor
9787 Views

Putting bee honey on a cut kills bacteria. Honey contains a high concentration of sugar. Use your knowledge of water potential to suggest how putting honey on a cut kills bacteria. (AQA BIOL1)

Sugar is a solute and is able to dissolve in water. When sugar is dissolved in water, it has a low water potential. Water moves from a high water potential to a low water potential; from where there is a ...

CS
Answered by Charlotte S. Biology tutor
24680 Views

What is the Difference between saturated and unsaturated fatty acids?

 Firstly, saturated fatty acids are where all the carbon atoms have single bonds between them making the lipid saturated as no more hydrogens can be added. Having

KD
Answered by Katie D. Biology tutor
77581 Views

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