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Biology
A Level

How do organelles work together to produce and release proteins from a cell

The nucleus contains all the DNA of a cell. RNA polymerase converts the DNA of the gene corresponding to the desired protein into RNA. The RNA is transported to the rough ER where it is translated into an...

Answered by Benjamin H. Biology tutor
11472 Views

During sampling, discuss the principles and strategies that should be employed in the collection of representative samples.

First it is important to define a representative sample. A representative sample should have a mean very close to the entire population being sampled, i.e. you are able to account for the natural variatio...

Answered by Rowan S. Biology tutor
5361 Views

List and briefly explain the two main mechanisms by which mammalian genes can be exchanged or 'translocated' between chromosomes. What are the importance of these types of recombination? (8 marks)

i. Homologous Recombination. A conservative, error-free DNA replication pathway that mainly allows for the repair of DNA under duress and also for the resetting of replication forks. The pathway is regula...

Answered by Benjamin A. Biology tutor
1974 Views

Describe how allopatric speciation occurs.

In a population of a species a barrier forms (for example the formation of a new river, or the division between two islands). This leads to two isolated groups of the original species. In the two isolated...

Answered by Amelia P. Biology tutor
2232 Views

Describe the structure of glycogen and explain why it is a suitable molecule to store energy.

Glycogen is a polysaccharide. Polysaccharides are carbohydrates made up from a large number of monosaccharides joined together by glycosidic bonds formed in condensation reactions. Glycogen, sometimes ref...

Answered by Biology tutor
23594 Views

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