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Biology topic 8 - Statistics
General Stats
- This quiz has been taken 18 times
- The average score is 3 of 32
Answer Stats
| Hint | Answer | % Correct |
|---|---|---|
| which eukaryotic organelles contain dna | nucleus, mitochondria, chloroplasts | 100%
|
| which process synthesises mRNA molecules | transcription | 14%
|
| How many tRNA molecules bind to a ribosome at a time | 2 | 7%
|
| Which part of a tRNA molecule binds to an mRNA molecule | anticodon | 7%
|
| What is an anticodon | a sequence of 3 bases at one end of a tRNA molecule | 7%
|
| What is a codon | a sequence of 3 bases on mRNA that code for an amino acid | 7%
|
| What is the role of mRNA | carries genetic information from the DNA to the ribosomes for protein synthesis | 7%
|
| why is the genetic code described as being non-overlapping | each base in the dna sequence is only read once | 7%
|
| why is the genetic code universal | each dna triplet codes for the same amino acid in all organisms | 7%
|
| What is the role of RNA polymerase in transcription | forms phosphodiester bonds between RNA nucleotides to form an mRNA molecule | 7%
|
| whats a proteome | full range of proteins that a cell is capable of producing | 7%
|
| What happens when RNA polymerase reaches a stop signal | it stops making mRNA and detaches from the DNA | 7%
|
| why is the genetic code degenerate | most amino acids are coded for by more than one triplet | 7%
|
| During translation, what happens when a ribosome reaches a stop codon | polypeptide chain detaches from the ribosome | 7%
|
| What is splicing | process of removing introns from a pre-mRNA molecule | 7%
|
| What is translation | process of using mRNA and tRNA to build a polypeptide chain | 7%
|
| why does prokaryotic mRNA not undergo splicing | Prokaryotic DNA does not contain introns | 7%
|
| Where in the cell does translation take place | ribosomes | 7%
|
| what's a triplet | sequence of 3 dna bases that code for a single amino acid | 7%
|
| what is the genetic code | sequence of bases that code for amino acids | 7%
|
| describe the structure of dna in mitochondria and chloroplasts | short, circular, not associated with histones | 7%
|
| what is a gene | short section of dna that codes for a polypeptide | 7%
|
| Describe the structure of mRNA molecules | single-stranded and linear | 7%
|
| What are the similarities between mRNA and tRNA molecules | single-stranded,contain ribose, phosphate and nitrogenous bases | 7%
|
| what's a locus | specific position along a chromosome where a gene is located | 7%
|
| Where does an mRNA molecule initially bind to a ribosome | start codon on mRNA | 7%
|
| what's a genome | the complete set of genes within a cell | 7%
|
| What is transcription | the process of copying the genetic code from DNA onto an mRNA molecule | 7%
|
| Why do hydrogen bonds need to be broken in transcription | to unwind the double helix and separate the DNA strands | 7%
|
| What is the role of tRNA | transports amino acids to the ribosomes to build up a polypeptide chain | 7%
|
| how are amino acids joined together in the process of translation | using ATP to form a peptide bond between them | 7%
|
| how is dna organised into chromosomes | wrapped around histones to form a dna histone complex | 7%
|
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