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WorksheetsActivity 1.1.5 DNA Evidence
Total questions: 10
Worksheet time: 8mins
What is meant by 'Your Unique Set of Instructions' in the context of DNA?
A set of guidelines for personal development
A unique genetic code that determines individual traits
A personalized instruction manual for life skills
A specific set of rules for social behavior
How is DNA evidence prepped for analysis?
By heating it to a high temperature
By using a chemical solution to break down cells
By freezing it
By exposing it to ultraviolet light
What is thymine?
A) A component of nucleic acids found in DNA and RNA and in the energy-carrying molecule, ATP. Adenine is a purine base.
B) A component of the nucleic acid, DNA; a pyrimidine base.
C) A component of nucleic acids (DNA and RNA); a purine base.
D) A component of nucleic acids (DNA and RNA); a pyrimidine base.
What is guanine?
A) A component of nucleic acids found in DNA and RNA and in the energy-carrying molecule, ATP. Adenine is a purine base.
B) A component of the nucleic acid, DNA; a pyrimidine base.
C) A component of nucleic acids (DNA and RNA); a purine base.
D) A component of nucleic acids (DNA and RNA); a pyrimidine base.
Who were the two scientists that published a paper describing the three-dimensional structure of DNA as a double helix?
What was the contribution of Rosalind Franklin to the discovery of DNA's structure?
She developed the double helix model.
She provided X-ray diffraction images of DNA.
She discovered the base pairing rules.
She isolated DNA for the first time.
Which color represents oxygen in the DNA model activity?
Red
White
Blue
Yellow
Look at the four nucleotides (A, T, G, and C) and observe similarities and differences between them. Which of the following is a similarity between all four nucleotides?
They all contain a phosphate group.
They all have the same nitrogenous base.
They all pair with the same nucleotide.
They all have the same sugar molecule.
DNA takes the form of a double helix. It is composed of repeating: deoxyribose sugar molecules, nitrogenous bases, and phosphate groups. Match each component of DNA to its correct position (indicated by a letter) on the DNA double helix pictured here.
deoxyribose sugar molecules
position A
nitrogenous bases
position B
phosphate groups
position C
What is the significance of DNA structure in modern genetics?
It determines the genetic code and hereditary information.
It provides energy for cellular processes.
It acts as a structural component of cells.
It is responsible for cellular respiration.
