Protein Synthesis Question Preview (ID: 49986)
How Are Proteins Made From DNA?
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Both DNA and RNA are made of subunits or building blocks called _____.
a) nucleotides
b) amino acids
c) proteins
d) enzymes
What is the name of the enzymes that adds new nucleotides to build mRNA?
a) DNA Polymerase
b) RNA Polymerase
c) Helicase
d) Restriction endonuclease
How many strands does DNA have?
a) 1
b) 2
c) 3
d) 4
How many strands does mRNA have?
a) 1
b) 2
c) 3
d) 4
Which mRNA nucleotide is complementary to guanine?
a) adenine
b) cytosine
c) uracil
d) thymine
Which RNA nucleotide is complementary to adenine?
a) guanine
b) cytosine
c) thymine
d) uracil
Which RNA molecule is complementary to thymine?
a) adenine
b) uracil
c) guanine
d) cytosine
What is the function of mRNA?
a) to transmit the code for making proteins from DNA to the site of protein synthesis
b) to make tRNA
c) to carry the information necessary to make protein from the nucleus to the ribosome
d) both 1 and 4
What happens to DNA once transcription is done?
a) It is destroyed.
b) It makes copies of itself right away.
c) It zips back up until it is necessary to transcribe the gene again
d) It mutates
What is translation?
a) The making of a protein using the codons on mRNA as instructions.
b) The making of mRNA using DNA as a template.
c) The making of tRNA, mRNA, and ribosomes
d) The production of RNA Polymerase and nucleic acids at the ribosomes.
What is the job of mRNA?
a) to make DNA
b) to make mRNA
c) to serve as the instructions for making proteins at the ribosome
d) to make more tRNA molecules at the ribosome
What is the job of tRNA?
a) to make mRNA
b) to bring amino acids to the ribosome in the correct order
c) to bring nucleic acids to the ribosome in the correct order
d) to make more codons so that translation can continue to occur
Where are codons located?
a) on tRNA
b) on mRNA
c) on proteins
d) on RNA Polymerase
Where are anticodons located?
a) on DNA
b) on mRNA
c) on tRNA
d) on rRNA
What happens at the ribosome?
a) protein synthesis
b) mRNA codons and their complementary tRNA anticodons match up
c) amino acids are joined together by peptide bonds to make a polypeptide (protein)
d) all of the above
What are amino acids?
a) the building blocks (monomers) of protein
b) the building blocks (monomers) of nucleic acids like DNA and RNA
c) the building blocks (monomers) of lipids
d) Very dangerous substances that have an extremely low pH (very acidic)
What is a polypeptide?
a) a protein
b) a chain of amino acids
c) a polypeptide is the product of translation
d) all of the above
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