Tutorials - Types of nucleic acids, DNA replication

12 important questions on Tutorials - Types of nucleic acids, DNA replication

What are two examples of the large nitrogen containing ring structures called purines?

Adenine and guanine

What are three examples of the small nitrogen containing ring structures called pyrimidines?

Thymine, cytosine and uracil

What is another name for a nitrogen containing base and a sugar where the sugar is either ribose or deoxyribose?

Nucleoside
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What does a set of three nitrogen containing bases, also called a  codon or genetic code, do?

Codes for a specific amino acid

What nucleic acid do the components ribose, phosphate, adenine, guanine, cytosine and uracil make?

RNA

What is messenger RNA?

RNA that copies the coded message from DNA in the nucleus and carries the message into the cytosol

What is ribosomal RNA?

Protein synthesising machinery that forms the ribosome

What is the structure of the double helix that is present in DNA molecules?

Hydrogen bonds between nitrogen containing bases holding DNA strands together, with the bonds forming between one pyrimidine base and one purine base

Where does the unwinding of the double helix structure occur in DNA replication?

Occurs at multiple points within the DNA helix at the same time

What is a three-nucleotide sequence on a messenger RNA that codes for a single amino acid?

Codon

What is the process of copying a gene's DNA sequence onto an mRNA sequence called?

Transcription


What is the sequence of synthesised mRNA when a DNA strand with the sequence A A C G T A A C G is transcribed?

U U G C A U U G C

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