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WorksheetsDNA discovery and DNA replication
Total questions: 21
Worksheet time: 11mins
What was the conclusion of the Hershey Chase Experiment?
Lipids are the genetic material in viruses
Proteins are the genetic material in viruses
RNA is the genetic material in viruses
DNA is the genetic material in viruses
What is the basic building block of DNA?
Chromosome
Protein
Cell
Nucleotide
Which type of sugar is found in RNA?
glucose
sucrose
fructose
ribose
What is the process by which DNA makes an exact copy of itself?
Cell division
RNA replication
Protein synthesis
DNA replication
In the Hershey Chase Experiment, what was labeled with radioactive phosphorus and sulphur?
DNA
Proteins
Lipids
Carbohydrates
What was the key finding of the Meselson Stahl Experiment?
Random replication of DNA
Dispersive replication of DNA
Conservative replication of DNA
Semi-conservative replication of DNA
What are the four nitrogenous bases found in DNA?
Thymidine
Adenine, Thymine, Guanine, Cytosine
Uracil
Guanosine
Adenosine
Which type of nucleic acid contains uracil instead of thymine?
DNA
Carbohydrate
RNA
Protein
What is the function of DNA polymerase in DNA replication?
To synthesize new DNA strands by adding complementary nucleotides
To regulate gene expression
To break down DNA strands into nucleotides
To repair damaged DNA
What is the shape of the DNA molecule?
Double helix
Triangle
Square
Single strand
What is the role of RNA in protein synthesis?
RNA is responsible for breaking down proteins during synthesis.
RNA acts as a barrier preventing protein synthesis.
RNA carries genetic information from DNA to the ribosomes for protein synthesis.
RNA transports proteins from the ribosomes to DNA.
What enzyme unwinds the DNA double helix during replication?
Polymerase
Primase
Helicase
Ligase
What is the complementary base pair for adenine in DNA?
Uracil
Guanine
Cytosine
Thymine
What is the function of helicase in DNA replication?
Joins Okazaki fragments
Proofreads the newly synthesized DNA strand
Unwinds the double-stranded DNA helix
Adds nucleotides to the growing DNA strand
What is the sugar-phosphate backbone of DNA made of?
Alternating sugar (deoxyribose) and phosphate molecules
Only sugar molecules
Phosphate and nitrogen molecules
Alternating nitrogen and phosphate molecules
Which enzyme is responsible for joining Okazaki fragments in DNA replication?
DNA ligase
Helicase
DNA polymerase
RNA polymerase
What is the difference between DNA and RNA structure?
DNA is double-stranded with deoxyribose sugar and thymine base, while RNA is single-stranded with ribose sugar and uracil base.
DNA and RNA are both double-stranded with deoxyribose sugar and thymine base.
DNA and RNA have the same structure but differ in function.
DNA is single-stranded with ribose sugar and thymine base, while RNA is double-stranded with deoxyribose sugar and uracil base.
What is the role of DNA ligase in DNA replication?
Unwinds the double-stranded DNA helix
Joins Okazaki fragments
Proofreads the newly synthesized DNA strand
Adds nucleotides to the growing DNA strand
What is the function of RNA polymerase in DNA replication?
Joins Okazaki fragments
Unwinds the double-stranded DNA helix
It has no role to play in DNA replication
Repairs damaged DNA
What is Chargaff's rule in DNA?
The rule that states the amount of adenine is equal to thymine, and the amount of guanine is equal to cytosine
The rule that states the amount of adenine is equal to guanine, and the amount of thymine is equal to cytosine
The rule that states the amount of adenine is equal to cytosine, and the amount of guanine is equal to thymine
The rule that states the amount of adenine is equal to uracil, and the amount of guanine is equal to cytosine
If the DNA code is 'GCTA', what would be the complementary code?
CGAT
AGCT
TCGA
ATCG
