DNA + Protein Synthesis: Question Preview (ID: 14221)

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Who were the scientist(s) who built a 3-D model?
a) Avery and Griffith b) Chargaff and Franklin c) Hershey and Chase d) Watson and Crick
What is the role of the enzyme DNA helicase?
a) To unzip DNA by breaking the hydrogen bonds between the hydrogen bases during replication. b) To line up new base pairs during replication. c) To proofread and correct any errors during replication. d) To translate the DNA code into messenger-RNA
What happens during transcription?
a) t-RNA deliers amino acids at the ribosome b) A protein is made in the nucleus c) m-RNA Is made from DNA in the nucleus d) r-RNA helps make a protein
How many nitrogen bases are found in m-RNA?
a) 1 b) 2 c) 3 d) 4
A substitution of one nucleotide is called a
a) deletion b) frameshift mutation c) insertion d) point mutation
Which scientists conducted DNA X-ray diffraction which showed the helical shape?
a) Avery and Griffith b) Chargaff and Franklin c) Hershey and Chase d) Watson and Crick
Where does translation take place in a cell?
a) cytoplasm b) nucleus c) mitochondria d) ribosome
What is the m-RNA codon for the following DNA strand: GAG TAC CTA
What occurs during DNA replication?
a) m-RNA is formed from DNA b) t-RNA brings amino acids to the ribosome c) DNA unzips and makes an exact copy prior to cell division d) a protein is formed in the nucleus
What are the parts of a nucleotide?
a) amino acid, sugar, nitrogen base b) nitrogen base, phosphate, sugar c) nitrogen base, protein, sugar d) phosphate group, protein, sugar
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