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WorksheetsDNA Replication and Related Concepts Quiz
Total questions: 15
Worksheet time: 8mins
What is the primary enzyme involved in DNA replication?
Ligase
Helicase
DNA polymerase
RNA polymerase
What is the method by which DNA is replicated in all known cells?
Semi-conservative replication
Conservative replication
Dispersive replication
Non-conservative replication
What is the role of topoisomerase in DNA replication?
Synthesizes new DNA strands
Joins Okazaki fragments
Unwinds the DNA double helix
Relieves strain in the DNA ahead of the replication fork
What is a point mutation?
A mutation that involves a change in a single nucleotide base
A mutation that involves the inversion of a DNA segment
A mutation that involves the insertion of a large segment of DNA
A mutation that involves the deletion of a large segment of DNA
What is the primary function of DNA fingerprinting?
To amplify DNA segments
To edit genes in living organisms
To identify individuals based on their DNA profiles
To sequence the entire genome
What is the purpose of PCR (Polymerase Chain Reaction)?
To repair DNA
To transcribe DNA into RNA
To sequence DNA
To amplify DNA segments
What is gene splicing?
The introduction of genes from different organisms into bacteria
The replication of DNA
The mutation of genes
The removal of introns from RNA
What is the main function of mitosis?
To produce gametes
To reduce the chromosome number by half
To distribute two sets of chromosomes into two separate nuclei
To repair damaged DNA
What is the role of cyclin in cell division?
It inhibits cell division
It degrades damaged proteins
It activates cdc2 proteins and MPF to induce mitosis
It repairs DNA
What is the primary cause of skin cancer?
Bacterial infection
UV rays in sunlight
Genetic mutations
Chemical exposure
What is the function of keratinocytes in the epidermis?
To produce melanin
To produce keratin
To sense touch
To initiate immune responses
What is the primary pigment responsible for skin color?
Chlorophyll
Hemoglobin
Carotene
Melanin
What is the function of the stratum corneum?
To produce sweat
To sense temperature changes
To provide a barrier against environmental damage
To produce new skin cells
What is the primary function of the dermal papillae?
To produce melanin
To provide the basis for fingerprints
To increase the surface area for nutrient exchange
To produce sweat
What is the primary cause of erythema or blushing?
Increased melanin production
Increased carotene levels
Increased blood supply to the skin
Decreased oxygen levels in the blood
