DNA Technology

After conducting several tests, a scientist determines that the nucleic acid sample he is studying has the following characteristics:
•Contains nucleotides linked in a chain
•Contains 4 nitrogen bases
•Made of single strand
•Uracil is present
What is the BEST conclusion the scientist can make based on the observations?

• The nucleic acid is DNA.
• The nucleic acid is RNA.
• The nucleic acid is a protein.
• More tests would be needed to determine the type of nucleic acid in the sample.

Insects are a major danger to crop plants. Every year, insect damage destroys many plants that could be used to produce food. Genetic engineering can be used to insert a gene into crop plants that helps them resist insects. What is one potential risk of this use of biotechnology?

• Crops will not grow as quickly.
• Each plant will require more water.
• The gene will transfer into wild plants.
• The plants can no longer undergo selective breeding.

Tags

NGSS.HS-LS2-6

NGSS.HS-LS2-7

A time line of important discoveries about DNA is shown below. These discoveries have contributed to our current knowledge about
DNA.Which statement best summarizes the development of knowledge about DNA over time?

• Changes in ideas about DNA are based on opinion.
• Ideas about DNA have remained unchanged over time.
• Past knowledge about DNA was discarded as each new discovery was made.
• Scientists gained more knowledge about DNA as new evidence became available.

Genetically engineered plants, or Genetically Modified Organisms (GMO's) often get bad press in the media. These plants are usually a naturally occurring plant, with added genes to allow them to survive better in certain environments or add nutritional features for consumers. These plants____

• are banned throughout the world.
• are more difficult to engineer than animals.
• include a transgenic rice plant that can help prevent vitamin A deficiency.
• are being rapidly developed, but traditional plant breeding programs are still the only method used to develop new plants.

Tags

NGSS.HS-LS2-7

Which of the following best describes recombinant DNA?

• molecules that have undergone DNA fingerprinting analysis
• DNA molecules composed of DNA from different sources
• genetic information from selectively bred organisms
• genetic information that has been cut with restriction enzymes

Organisms that have DNA from a different species artificially inserted into their cells are called

• bioremediated
• transgenic
• cultured
• a clone

GMO stands for

• Genetically Made Organism
• Growing More Organisms
• Genetically Modified Organism
• Growing Many Organisms

All of the following are advantages of GMO's except

• pest resistant crops
• more nutritional foods
• unknown long term health effects
• creating more human insulin

Based on these results whose blood was found in the blood stain at the crime scene?

• Bob
• Sue
• John
• Lisa

Combining DNA from 2 different organisms is called

• Bioengineering
• Biotechnology
• Recombinant DNA
• Genetic Engineering