Do you know all about DNA and RNA? Check out this molecular Biology MCQ quiz with answers and review your knowledge of DNA and RNA structure, replication, transcription & translation. Molecular biology is a branch of Biology that is concerned with studying chemical structures and biological phenomenon processes. It is mostly focused on nucleic acids (DNA and RNA) and proteins. This is an advanced-level test, so questions might be hard for you. Answer the questions carefully. Play the quiz now.
Phosphate
Deoxyribose sugar
Ribose sugar
A nitrogenous base
Semiconservative (half old, half new)
Conservative (original remains, a new one is formed)
Semipermeable (letting some molecules through)
All of these
Helicase & gyrase
Ligase
DNA Polymerase III
Primase
RNAse H (DNA Polymerase I)
Helicase & gyrase
DNA Polymerase III
Ligase
RNAse H (DNA Polymerase I)
Primase
Helicase & gyrase
DNA Polymerase III
Ligase
RNAse H (DNA Polymerase I)
Primase
Helicase & gyrase
DNA Polymerase III
Ligase
RNAse H (DNA Polymerase I)
Primase
To speed up the copying of DNA & make sure it happens correctly
To prevent annealing (closing) of 'unzipped' DNA + increase processivity
To ensure that any errors in copying are excised before they become permanent
To bring the correct nucleotides to their correct complementary partners
Leading
Lagging
Template
Adenine
Leading
Lagging
Template
Adenine
Leading
Lagging
Template
Adenine
TTGCCTAATATA
AACGGATTATAT
AACGGAUUAUAU
UUGCCUAAUAUA
Redundancy
Repetitiveness
Recombination
Frequency
Isoleucine
Proline
Methionine
Tryptophan
Nothing.... that's ridiculous!
A polypeptide composed of 7 Lysines
A polypeptide composed of 7 Phenylalanines
A polypeptide composed of 6 Lysines
The nucleus
The cytoplasm
Anywhere there is a ribosome
All of these
The nucleus
The cytoplasm
Anywhere there is a ribosome
All of these
CGC
GCG
UAU
ATA
It is composed of two subunits, large & small
It is a vital participant in both transcription & translation
It has three sites (E, P, A) that accomodate tRNA's
It is the cell's protein maker
UGU, UGC
ACA, ACG
TGT, TGC
All of these
Removal of exons
Removal of introns
Complementary pairing
Secondary pairing
TRP - PHE - LYS - ILE - LEU
MET - GLY - SER - PHE - SER
GLY - ASP - GLU - MET - MET
None of the above
Gene expression
Genetic mutation
General mayhem
Genetic coding
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