Worksheets8A_DNA Replication & Protein Synthesis
Total questions: 15
Worksheet time: 9mins
Which one of these is the Base?
A
B
C
a DNA sequence that contains the information to make a specific protein
transcription
promoter
tRNA
Gene
Is A or B the 5' end of this molecule?
A
B
Is this DNA or RNA?
DNA
RNA
Cannot be determined from this image
Between two strands of nucleic acids, what type of bond holds together complementary nitrogen bases?
hydrogen
covalent
peptide
What is strand A being used for?
As a template for DNA replication
As a template for the synthesis of mRNA
This is the triplet of bases on the end of a tRNA molecule
Anticodon
Codon
Protein
How many amino acids are found on one tRNA?
20
4
1
3
Which of the following is the mRNA?
A
B
C
E
Which of the following is the polypeptide chain?
A
B
C
D
E
Most gene regulation happens at which step?
translation
transcription
signal transduction
DNA replication
The purpose of the lac operon is to only _______________ if the cell [really] requires it.
breakdown glucose
ferment lactose
produce lactose
produce enzymes to digest lactose
The lac operon genes only become expressed if:
lactose is present and glucose levels are low
lactose is absent and glucose levels are high
lactose binds to the operator
the repressor binds to the operator
