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WorksheetsDNA and Protein Synthesis Review
Total questions: 12
Worksheet time: 6mins
Which of the following would be least likely to happen as a result of a mutation in a person's skin cells?
skin cancer
reduced function of the skin cell
no change in functioning of the skin cell
the person's offspring have mutated skin
In most organisms, the start of translation is signaled by an AUG codon. What is the first amino acid in most proteins?
Proline
Leucine
Isoleucine
Methionine
Proteins are chains of amino acids bonded together. Which is the correct sequence for making proteins?
Information is DNA is transferred into RNA and then made into protein
Information in DNA is formed into protein directly.
Information in RNA mutates into DNA and then is made into protein
Information in RNA uses thermal energy to make protein
A molecule of DNA is made up of ___________.
amino acids and proteins
ATP and enzymes
paired nucleotides
receptor enzymes
Which is the function of the enzyme DNA polymerase during replication?
bonds mRNA to original parent strand
bonds new nucleotides to parent strand
unwinds the replicated DNA strand
winds up the replicated DNA strand
Which explains how DNA strands fit inside of a cell?
DNA strands coil tightly around proteins called histones.
The average strand is only composed of 50-245 nucleotides.
The chromatin fibers of DNA are only 3 nucleotides thick.
The double helix shape of DNA greatly reduces it volume.
Which defines a codon in DNA or mRNA?
pair of nucleic acid and sugar
pair of phosphate and sugar
three-base code
two-base code
Which of the following sequences of processes correctly reflects the central dogma?
protein synthesis, transcription, translation
protein synthesis, translation, transcription
transcription, translation, protein synthesis
translation, transcription, protein synthesis
A DNA segment is changed from AATTAG to AAATAG. This is a(n)
frame shift mutation
substisution
insertion
deletion
Where would a DNA substitution probably have the smallest effect on the organism?
exon
histone
intron
operon
What process is shown in the picture?
commensalism
deletion
passive transport
replication
What is the role of the structure shown during protein synthesis?
mRNA delivers codons from DNA in the nucleus
mRNA attaches to the ribosome
rRNA forms ribosomes
tRNA transports amino acids from the cytoplasm to the ribosome for translation
