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Nucleic acids
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Which sugar is found in all RNA molecules?
Ribose
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What is different about a pair a homologous chromosomes?
The alleles they carry
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What does universal mean?
Each triplet codes for the same amino acid in all organisms
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What is a codon?
A sequence of 3 bases
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What does degenerate mean?
Each amino acid can be coded for by more than one triplet
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State 3 features of tRNA
Clover-leaf shape, Amino acid attachment point, anticodon, hydrogen bonds
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Which nucleic acid is the most stable?
DNA
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What is the combination of DNA and a histone called?
Nucleosome
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What does non-overlapping mean?
Each base sequence is read only once
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What shape is mRNA?
Single helix
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Which type of RNA is found in the nucleus?
mRNA / pre mRNA
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What are coding sequences called?
Exons
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What is an anticodon
A sequence of 3 bases on a tRNA molecule
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Which amino acid is coded for first in all polypeptides
Methionine
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Which type of RNA has a fixed length?
tRNA
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What is an allele?
Different form of the same gene
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What is a gene
A bases sequences that codes for a polypeptide
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What is an intron?
Non coding sequence
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State one difference between prokaroytic and eukaryotic DNA
Histones, length, size
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How is the shape of tRNA described?
Clover leaf
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How many nucleotides make up a tRNA molecule
80
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How does the stability of mRNA compare to tRNA
mRNA less stable
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What is the same about a pair of homologous chromosomes
The genes they carry
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Which nucleic acid is the largest?
DNA
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What is the proteome of a cell?
All the proteins produced by the genome
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What is a locus
A particular location on a DNA molecule
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Which protein is DNA coiled around?
Histone
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What is the genome of an organism?
All the genes in the cell
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