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Explain semi-conservative DNA replication, identifying the key enzymes involved and summarising their functions.

The DNA double helix structure, proposed by Watson and Crick in 1953, was the basis of the hypothesis that DNA replicated in a semi-conservative manner. In 1958 the Meselson-Stahl experiment supported this i...
JD
Answered by Jan D. • Biology tutor
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Distinguish between eukaryotic and prokaryotic cells

Eukaryotic Cell - DNA with proteins; DNA surrounded by membrane; Has mitochondria; 80S Ribosome; Reproduces by mitosis; Membrane-bound organelles; Chromosome are linear; Larger in size Prokaryotic Cell - DNA...
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Answered by Jason W. • Biology tutor
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How does DNA transcription work?

The process of DNA transcription can be split up into three stages: initiation, elongation and termination. First, an enzyme called RNA polymerase binds to a certain sequence of bases called the promoter reg...
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Answered by Joré D. • Biology tutor
2470 Views

Describe the process of protein transport via vesicles in eukaryotes

Proteins are synthesised in the ribosomes from mRNA and tRNA nucleotides. Proteins enter the rough ER and are bound to vesicles here. The vesicles detach from the rough ER and transport the proteins to the G...
DS
Answered by Devina S. • Biology tutor
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Describe the different phases involved in mitosis

In mitosis there are four phases: Prophase, Metaphase, Anaphase and Telophase. The first step is early Prophase, where chromosomes condense and become visible through supercoiling and simultaneously spindle ...
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Answered by Arabella H. • Biology tutor
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