Welcome to the Quiz!
This quiz contains 12 questions from a mix of 1 subtopics.
A section of DNA that codes for a protein is called a .
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Which of the following describes transcription?
The copying of a single gene of DNA, to mRNA
The combination of amino acids to form a polypeptide
The movement of DNA from the nucleus to the cytoplasm
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Where does transcription take place?
Mitochondria
Nucleus
Ribosome
Chloroplast
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Why does a gene of DNA have to be copied to mRNA (transcription)?
DNA doesn't carry genetic information
DNA is too large to leave the nucleus
DNA has the wrong code
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How is mRNA different to DNA?
(Select all that apply)
mRNA is shorter than DNA
mRNA is single stranded, but DNA is double stranded
mRNA is longer than DNA
mRNA is double stranded, but DNA is single stranded
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Once the mRNA leaves the nucleus and enters the cytoplasm, which sub-cellular structure (organelle) does it go to?
Ribosome
Chloroplast
Mitochondria
Cell membrane
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Which of the following describes translation?
The combination of amino acids to form a polypeptide
The copying of a single gene of DNA to mRNA
The movement of DNA from the nucleus to the cytoplasm
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How many bases are needed to code for one amino acid?
1
2
3
4
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What is the function of a ribosome?
To build sugars from water and carbon dioxide
To release energy from glucose
To assemble proteins from amino acids
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A chain of amino acids is called a ____________.
Carbohydrate
Nucleic acid
Polypeptide
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Which base does uracil replace in mRNA?
Adenine
Thymine
Cytosine
Guanine
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Different sequences of amino acids within a polypeptide will fold up into different shapes, and so form different .
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