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?
Ribosome
Nucleus
Mitochondria
Chloroplast
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Why does a gene of DNA have to be copied to mRNA (transcription)?
DNA has the wrong code
DNA doesn't carry genetic information
DNA is too large to leave the nucleus
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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?
Mitochondria
Chloroplast
Ribosome
Cell membrane
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Which of the following describes translation?
The movement of DNA from the nucleus to the cytoplasm
The combination of amino acids to form a polypeptide
The copying of a single gene of DNA to mRNA
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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 assemble proteins from amino acids
To release energy from glucose
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A chain of amino acids is called a ____________.
Nucleic acid
Polypeptide
Carbohydrate
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Which base does uracil replace in mRNA?
Thymine
Guanine
Adenine
Cytosine
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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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