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Enzymes and protein synthesis

Quiz by Leslie Mosley

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15 questions
Show answers
  • Q1
    What is an enzyme?
    A type of nucleic acid molecule
    A type of carbohydrate molecule
    A protein catalyst that speeds up chemical reactions
    A type of lipid molecule
    30s
  • Q2
    Which part of the enzyme binds to the substrate?
    Active site
    Inhibitory site
    Allosteric site
    Catalytic site
    30s
  • Q3
    What is the effect of temperature on enzyme activity?
    Decreases activity at high temperatures
    No effect on activity
    Increases activity indefinitely
    Increases activity up to a certain point, after which it decreases
    30s
  • Q4
    What is the function of a coenzyme?
    Increases the temperature optimum of the enzyme
    Binds to the substrate to form a complex
    Helps the enzyme carry out its catalytic function
    Inhibits the enzyme activity
    30s
  • Q5
    What is the purpose of enzyme-substrate specificity?
    To increase the rate of non-specific reactions
    To allow the enzyme to bind to any substrate
    To decrease the rate of specific reactions
    To ensure that the enzyme only catalyzes specific reactions
    30s
  • Q6
    What is the first step of protein synthesis?
    Mutation
    Translation
    Transcription
    Replication
    30s
  • Q7
    What is the primary function of transfer RNA (tRNA)?
    To break down proteins
    To bring amino acids to the ribosome for protein synthesis
    To replicate DNA
    To copy DNA into RNA
    30s
  • Q8
    Where does protein synthesis occur in the cell?
    In the cytoplasm
    In the mitochondria
    In the nucleus
    On ribosomes
    30s
  • Q9
    Which of the following is NOT a type of RNA involved in protein synthesis?
    mDNA
    mRNA
    tRNA
    rRNA
    30s
  • Q10
    What is the function of messenger RNA (mRNA) in protein synthesis?
    To assemble ribosomes
    To bring amino acids to the ribosome
    To remove introns from the RNA transcript
    To carry genetic information from DNA to the ribosome
    30s
  • Q11
    What is the final step of protein synthesis?
    Translation
    Transcription
    Replication
    Mutation
    30s
  • Q12
    What is a codon?
    A type of ribosome
    The site where tRNA binds to mRNA
    A sequence of three nucleotides on mRNA that specifies a particular amino acid
    A sequence of three amino acids in a protein
    30s
  • Q13
    What is the function of ribosomal RNA (rRNA) in protein synthesis?
    To remove introns from the RNA transcript
    To bring amino acids to the ribosome
    To carry genetic information from DNA to the ribosome
    To make up the structure of ribosomes
    30s
  • Q14
    What is a mutation?
    A type of RNA
    The process of copying DNA into RNA
    A change in the DNA sequence that can affect protein synthesis
    An enzyme involved in protein synthesis
    30s
  • Q15
    What is the function of the start codon in protein synthesis?
    To signal the start of protein synthesis and specify the first amino acid
    To signal the end of protein synthesis
    To remove introns from the RNA transcript
    To assemble ribosomes
    30s

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