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Describe how the information in DNA is used during transcription and translation to construct polypeptides, including the role of messenger RNA (mRNA), transfer RNA (tRNA) and the ribosomes.

RNA Is synthesised in the nucleus from a DNA template. During synthesis of RNA, the two strands of the DNA molecule separate temporarily; one of these strands is used as a template for synthesis of an RNA mo...
NS
Answered by Nikolaos S. • Biology tutor
7150 Views

How is the heart beat controlled?

The heart is composed of myogenic muscle and generates its own rate in normal condition. This rate can be modified during increased or decreased respiratory demand. The heart beat is initiated by a group of ...
TD
6481 Views

What is the difference between sister chromatids and homologous chromosomes?

This might be a bit tricky sometimes, but there is a main difference between those two that is crucial and not so hard to remember. Sister chromatids are formed during DNA replication therefore they are iden...
KB
Answered by Karolina B. • Biology tutor
48510 Views

Explain DNA replication

When a cell prepares to divide, the two strands of the double helix separate, serving as a template, for the creation of a new strand. The new strands are formed by adding nucleotides, resulting in the forma...
EP
2253 Views

Describe the basic principles of cell theory giving examples to support them

The cell is the smallest unit of life. Organelles cannot survive by themselves.Challenge to the theory: green algae - highly complex mono-nucleated cell that is up to 10cm. All cells come from pre-existing c...
KV
2085 Views