Top answers

Biology
A Level

What is the difference between competitive and non competitive inhibitors?

Competitive inhibitors have a similar shape to the substrate and they compete with the substrate to bind to the enzymes active site. When they bind to the active site, they block the substrate from bindin...

MC
Answered by Maria C. Biology tutor
2838 Views

What does the Hardy- Weinberg principle state? What is the equation?

• Both dominant and recessive allele frequencies will remain constant assuming the absence of migration, mutation and selection• p2 + 2pq + q2 = 1• Where p=frequency of A/N; p=freque...

JC
Answered by Jake C. Biology tutor
2872 Views

Describe the process of DNA replication

• Hydrogen bonds holding base pairs in the anti- parallel strands are broken by an enzyme; the two halves of the molecule separate • DNA unwinds and the strands separate; DNA polymerase catalyses the addi...

JC
Answered by Jake C. Biology tutor
2990 Views

Describe the problems that arise due to cystic fibrosis. Describe why cystic fibrosis occurs, with reference to its deficient gene. Describe the use of liposomes and viruses in treating cystic fibrosis

Describe the problems that arise due to cystic fibrosis • Produce thick, sticky mucus from epithelial cells lining certain passageways in body • Pancreatic duct becomes blocked preventing...

JC
Answered by Jake C. Biology tutor
2670 Views

What is the difference between mRNA and pre-mRNA in a eukaryotic cell?

The major difference between pre-mRNA and mRNA is that pre-mRNA is the immediate product of transcription which is comprised of both exons (coding sequences) and introns (non-coding sequences). After tran...

MY
Answered by Matt Y. Biology tutor
44996 Views

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