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WorksheetsGet to know your DNA!
Total questions: 15
Worksheet time: 9mins
The DNA molecule consists of monomers known as
nucleotide
nucleoside
pyrimidine
purine
A new DNA strand only elongated in the 5’ to 3’ direction because
DNA polymerase adds nucleotides at the 5’ end
Replication must progress toward the replication fork
Okazaki fragments prevent elongation in the 3’ to 5’ direction
DNA polymerase adds nucleotides only to the free 3’ end
DNA ligase are enzymes that
Unwind the double helix of DNA during replication
Link the nucleotides of the new DNA strand along the template of the old strand
Rejoin the two DNA strands (one new and one old) after replication
Annealing the Okazaki fragments
Transcription occur in
Cytoplasm
Ribosome
Nucleus
All of the followings are the function of promoter except for
Act as binding site for RNA polymerase
Act as stop signal for transcription
To determine which strand act as template
What is the name of enzyme for amino acid activation?
aminoacyl tRNA synthase
aminoacyl tRNA synthetase
aminoacyl rRNA synthase
aminoacyl rRNA synthetase
What are the three steps in elongation stage of translation (in sequence order)?
Codon recognition, translocation, peptide bond formation
Codon recognition, peptide bond formation, translocation
Peptide bond formation, translocation, codon recognition
Peptide bond formation, codon recognition, translocation
In lac operon, B-galactosidase is encoded by
lacG
lacA
lacZ
lacB
Name the enzyme that catalyze the addition of free RNA nucleotides to the growing mRNA strand
RNA polymerase
DNA polymerase III
DNA polymerase I
Primase
Name the amino acids for start codon AUG
Leucine
Isoleucine
Methionine
Alanine
Function of primase in the figure as
Unwinding the DNA double strand to allow DNA polymerase to function
Forming replication fork
Making short strands of RNA at the site where replication begins
Hydrolyzing ATP to facilitate DNA unwinding
All of the following are directly involved in translation except
mRNA
tRNA
ribosomes
DNA
The Central Dogma of Biology stated as
Protein→RNA→DNA
RNA→DNA→protein
DNA→protein→RNA
DNA→RNA→protein
Name the strand that replicated continuously toward replication fork
Okazaki Fragment
Lagging strand
Leading strand
Antisense strand
State the enzyme that initiates Transcription process
Helicase
DNA polymerase
RNA polymerase
Primase
