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The diagram below represents a technique used in some molecular biology laboratories.
Which phrase best describes a possible result of this process?*
A scientist plans to cut a segment of DNA so that it can be inserted into the DNA of a bacterium, a single-celled organism. The scientist needs to use a special type of organic molecule to perform this cutting process. This molecule is*
The diagram represents a process used to modify bacterial cells.
In the diagram, arrows labeled X and Y represent the use of*
A laboratory technique is represented in the diagram below. Letter A represents a process.
Which specific chemicals are needed to success- fully carry out the process shown at A?*
The diagram below represents a scientific technique in use today.
Scientists have used this technique to*
The diagram below shows some of the DNA in a bacterium into which a human gene, X, has been successfully inserted.
The bacteria that result from reproduction of this cell will most likely have the ability to*
Base your answers to questions 7 on the information below and on your knowledge of biology.
Researchers have produced rice plants that can withstand being completely submerged for up to two weeks. This is good news for farmers in the flood regions of Southeast Asia. The farmers in this region rely heavily on this crop. The diagram below illustrates the process used to genetically modify plants, such as rice.
The molecules used to cut, copy, and connect the DNA segments used in this process are*
The diagram below represents a laboratory process.
The substance represented by the scissors shown cutting the DNA is*
Which molecules are needed to cut and copy segments of DNA?*
Base your answers to questions 10 on the diagram below and on your knowledge of biology.
The process represented in the diagram is*
Phosphorus is necessary for the growth of healthy plants. Scientists are developing plants that can grow in phosphorus-poor soil. Some of these new varieties, produced in a lab, make extra copies of a protein that helps them obtain more phosphorus from the soil. The process being used to develop these new varieties is most likely*
The organic compounds that scientists use to cut, copy, and move segments of DNA are*
Base your answers to questions 13 on the information and photograph below and on your knowledge of biology.
Transgenic (GMO) Tomatoes
The use of pesticides to control insects costs billions of dollars every year. Genetically modified organisms (GMOs) are an attempt to reduce this cost. Tomato plants that are genetically modified can make proteins that are poisonous to the insects that feed on them. Using these GMO tomatoes would reduce the need for the chemical control of insects.
Identify the type of chemical substance a scientist would need to use to cut and paste the genes to produce genetically modified tomato plants. [1]*
Discuss the process used by scientists to insert a gene from one organism into the DNA of another. In your answer, be sure to:
• identify the scientific technique used to insert a gene from one organism into another [1]
• describe the function of a gene [1]
• identify the type of molecule used to cut the gene from the DNA of an organism [1]
• state one benefit of this technique to humans [1]*
The work of a cell is carried out by the many different types of molecules it assembles. Most of these molecules are proteins. Explain how the cell is able to make the many different proteins it needs. In your answer, be sure to:
• identify where in the cell the information necessary to construct a particular protein is located and the specific molecule that contains this information [1]
• identify both the cellular structure that assembles these proteins and the kinds of molecules that are used as the building blocks of the proteins [1]*
