
Enzymes and protein synthesis
Quiz by Leslie Mosley
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15 questions
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- Q1What is an enzyme?A type of nucleic acid moleculeA type of carbohydrate moleculeA protein catalyst that speeds up chemical reactionsA type of lipid molecule30s
- Q2Which part of the enzyme binds to the substrate?Active siteInhibitory siteAllosteric siteCatalytic site30s
- Q3What is the effect of temperature on enzyme activity?Decreases activity at high temperaturesNo effect on activityIncreases activity indefinitelyIncreases activity up to a certain point, after which it decreases30s
- Q4What is the function of a coenzyme?Increases the temperature optimum of the enzymeBinds to the substrate to form a complexHelps the enzyme carry out its catalytic functionInhibits the enzyme activity30s
- Q5What is the purpose of enzyme-substrate specificity?To increase the rate of non-specific reactionsTo allow the enzyme to bind to any substrateTo decrease the rate of specific reactionsTo ensure that the enzyme only catalyzes specific reactions30s
- Q6What is the first step of protein synthesis?MutationTranslationTranscriptionReplication30s
- Q7What is the primary function of transfer RNA (tRNA)?To break down proteinsTo bring amino acids to the ribosome for protein synthesisTo replicate DNATo copy DNA into RNA30s
- Q8Where does protein synthesis occur in the cell?In the cytoplasmIn the mitochondriaIn the nucleusOn ribosomes30s
- Q9Which of the following is NOT a type of RNA involved in protein synthesis?mDNAmRNAtRNArRNA30s
- Q10What is the function of messenger RNA (mRNA) in protein synthesis?To assemble ribosomesTo bring amino acids to the ribosomeTo remove introns from the RNA transcriptTo carry genetic information from DNA to the ribosome30s
- Q11What is the final step of protein synthesis?TranslationTranscriptionReplicationMutation30s
- Q12What is a codon?A type of ribosomeThe site where tRNA binds to mRNAA sequence of three nucleotides on mRNA that specifies a particular amino acidA sequence of three amino acids in a protein30s
- Q13What is the function of ribosomal RNA (rRNA) in protein synthesis?To remove introns from the RNA transcriptTo bring amino acids to the ribosomeTo carry genetic information from DNA to the ribosomeTo make up the structure of ribosomes30s
- Q14What is a mutation?A type of RNAThe process of copying DNA into RNAA change in the DNA sequence that can affect protein synthesisAn enzyme involved in protein synthesis30s
- Q15What is the function of the start codon in protein synthesis?To signal the start of protein synthesis and specify the first amino acidTo signal the end of protein synthesisTo remove introns from the RNA transcriptTo assemble ribosomes30s