DNA STRUCTURE | TRANSCRIPTION | TRANSLATION | PROTEIN SYNTHESIS | CHALLENGE QUESTIONS |
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What is the nitrogen base which compliments Adenine?
Thymine
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What does "transcribe" mean?
To make a written copy of something
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Where does translation take place and what attaches to the mRNA strand?
In the cytoplasm of the cell, the mRNA attaches to a ribosome
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What is another word(s) for protein?
polypeptide chain or amino acid chain
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What is the Human Genome Project?
A project whose goal is to find the sequence of nitrogen base pairs which make up human DNA, also to identify and locate each gene in the human genome
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What is the DNA "backbone" made of?
Sugar and Phosphate
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What do you call the new strand that is being created during transcription?
RNA or mRNA
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The ribosome reads the mRNA in groups of three nitrogen bases. What is this group of three letters called?
a codon
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What are three things that protein is used for?
to build our muscles, to form our hair, to shape our eyes, to pump our heart, to color our skin, to form structures in our body, etc.
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How many types of amino acids are there?
20
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What is holding the nitrogen bases together?
Weak Hydrogen bonds
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Where does the mRNA go when it is complete?
It leaves the nucleus to find a ribosome
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What carries the amino acids to the ribosome?
the tRNA
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What is the codon "AUG" also known as?
a start codon
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What are genetically identical copies of an organism called?
clones
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How does such a long strand of DNA fit into the nucleus of a cell?
It is very tightly packed and twisted together to form chromosomes
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What are the four nitrogen bases in mRNA?
Adenine, Uracil, Guanine, and Cytosine
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What are the three letters called that compliment the codons on the mRNA strand?
anticodons
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What are the three types of RNA?
rRNA, mRNA, and tRNA
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A mistake or change in the DNA sequence can result in what?
a mutation
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What is so important about DNA?
DNA is the instruction booklet of the cell, it contains all the information needed for the cell to function. DNA tells the cell what to do and how to do it.
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What is the name of the enzyme which copies the DNA strand to create RNA?
RNA polymerase
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What amino acid does CAA code for?
Glutamine
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What are the 3 components(parts) of a nucleotide?
a nitrogen base (A,T,C, or G), a sugar, and a phosphate group
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If one strand of DNA contains the base sequence AGATCA, what would the complimentary strand be? What would the mRNA strand be? Which 2 amino acids would the mRNA sequence code for?
complimentary strand TCTAGT
mRNA strand UCUAGU amino acids Serine and Serine |