A level (2.1.3 Nucleotides and Nucleic Acids) Biology Fichas sobre Polynucleotides and DNA, creado por Yinka F el 24/01/2018.
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Creado por Yinka F
hace casi 7 años
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Cerrar
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Creado por Yinka F
hace casi 7 años
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Complete the sentences:
Nucleotides join together to form _______________. The nucleotides join up between the ___________ group of one nucleotide and the ________ of another. This forms a __________________ ________ (consisting of the phosphate group and two ester bonds). The chain of sugars and phosphates is known as the __________ - ____________ ______________
What is the structure of DNA?
Outline the method of purifying DNA
In DNA purification, why is the DNA-detergent mixture put into a warm water bath?
In DNA purification, why is salt in the mixture?
In DNA purification, what is the role of protease?
Complete the sentences:
The enzyme __________ unzips the DNA strands by breaking the __________ bonds between the _______
Complete the sentences:
At the _________ strand, the ________________ nucleotides (free nucleotides) are attached to the __________ strand (in a 5’ to 3’ direction) continuously
Complete the sentences:
At the ________ strand, fragments of nucleotides (_________ fragments) are added _____________ (5’ to 3’). This is because the DNA is being constantly ________ , the phosphorylated ____________ have to keep back-tracking up the strand when the nucleotides are added in the 5’ to 3’ direction.
Complete the sentences:
DNA ____________ catalyses the addition of new ____________ bases
Complete the sentences:
_________ eventually joins up the okazaki fragments at the _______ strand
Complete the sentences:
Two DNA molecules now exist, with one of the 2 strands of each molecule being the original (__________) DNA. This is ______-_______________replication.
