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Biology
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Describe the role of RUBISCO in plants and evaluate the importance of RUBISCO in the Calvin Cycle? (8 Marks)

combines CO 2 with { ribulose bisphosphate / RuBP }
two molecules of { glycerate 3-phosphate / GP }

RUBISCO is important for the Calvin Cycle because:

It is an enzyme SO it lowers the ...

JO
Answered by John O. Biology tutor
8618 Views

Bob and Brenda are both heterozygous for a genetically inherited recessive trait. (a) Calculate the probability that they would have a healthy child. Use a genetic diagram to help. (b) Suggest an example of a recessive inherited disorder

Heterozygous means that the parents both carry a dominant allele (A) and a recessive allele (a).

Dominant alleles are always expressed in the phenotype. Recessive alleles are expressed in the pheno...

CM
Answered by Charlotte M. Biology tutor
2616 Views

Neurons do not make direct contact but are separated by synapses. Impulses cross a synapse by means of a neurotransmitter. Describe the process of neurotransmitter release at a synapse. You may use a labelled diagram.

  1. Action potential arrives at axon terminal of presynaptic neuron

  2. Voltage-gated Ca2+ channel opens

  3. ...
CM
Answered by Charlotte M. Biology tutor
2506 Views

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
2452 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
37875 Views

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