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Describe the process of DNA replication

During DNA replication, the enzyme DNA helicase separates the two strands by breaking the hydrogen bonds between bases of each strand. Activated DNA nucleotides hydrogen bond with the exposed complementary b...
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Answered by Dani H. • Biology tutor
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Explain how the structure of the lung enables rapid gas exchange?

The lungs have many alveoli which provide large surface area thus diffusion occurs quicker. The alveoli have walls that are one cell thick providing a short distance for diffusion. In addition, there is an e...
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Answered by Eleni P. • Biology tutor
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What is the difference between transcription and translation?

Transcription and translation are two of the processes involved in the production of a protein from it's gene. Translation, the first process, takes place within the nucleus. The DNA is unwound at the gene o...
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Answered by Angel V. • Biology tutor
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Describe each stage of mitosis

Mitosis takes place after interphase in which the DNA in the nucleus replicates in preparation for the cell to become two daughter cells. Prophase is the first stage wherein the duplicated DNA chromosomes co...
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Answered by Elizabeth H. • Biology tutor
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Describe and explain the process of saltatory conduction. Diagrams may be used.

Saltatory conduction is the term used to describe the propagation (a widely and quickly spreading phenomenon) of an action potential down the axon of a myelinated neuron, from one node of ranvier to the next...
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Answered by Poppy K. • Biology tutor
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