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What is semi-conservative replication?

During DNA replication, the two DNA strands separate and each acts as a template (due to base pairing) for DNA polymerase to use to make the second strand of DNA. As a result, each new DNA molecule has one o...
XW
Answered by Xanthe W. • Biology tutor
11103 Views

Explain the structure of a DNA polynucleotide strand

Think of DNA like 2 long shoelaces coiled around each other to form a spiral - or a double helix as it's called. Each of the 2 shoelaces is called a 'strand' and is made up of something called 'polynucleotid...
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Answered by Darius F. • Biology tutor
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How does a nerve transmit impulses?

At rest a nerve cell or fiber has more sodium (NA+) ions in the extracellular fluid and more potassium (K+) ions in the intracellular fluid. There are both NA+ and K+ ion channels in the membrane of the nerv...
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Answered by Kay W. • Biology tutor
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Please can we go over the process of spermatogenesis?

Of course. Spermatogenesis takes place in the seminiferous tubules of the testis. The germinal epithelium cells, which are in the wall of the seminiferous tubule, first differentiate into diploid spermatogon...
MH
Answered by Molly H. • Biology tutor
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What are the important similarities and differences between RNA and DNA?

Similarities Nucleotides consist of pentose sugar, phosphate and base Differences RNA: ribose (sugar) single stranded Made in the nucleus but can move outside it U, A, G, C bases DNA: deoxyribose (sugar) Dou...
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Answered by Rosie L. • Biology tutor
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