21. Biotechnology and genetic modification
A section of Biology, 0610
Listing 10 of 260 questions
Golden rice is a type of rice that has been genetically modified to contain a nutrient called beta-carotene. shows the genetic modification process used to produce golden rice. bacterial cell plant DNA tissue culture A B C rice plants with the ability to produce beta-carotene are grown rice plant cells infected with the genetically modified bacteria not to scale Using the information in , complete the sentences to describe how rice is genetically modified to contain beta-carotene. The part labelled A in the bacterial cell is a . Part A is extracted and cut using a enzyme forming ends. The part labelled B is the that codes for the production of beta-carotene. The enzyme used to cut part A is also used to cut part B from the plant DNA. Part B is inserted into the part labelled A using the enzyme . This forms the part labelled C, which is called a . Part C is put into a bacterium. The bacterium is taken up by rice plant cells, giving them the ability to produce beta-carotene. Tissue culture is a form of reproduction that is used to produce many identical rice plants producing beta-carotene for commercial use. Apart from structural features, state two reasons why bacteria are useful for genetic modification. Discuss the disadvantages of genetically modifying rice plants to produce beta-carotene. Beta-carotene is required to produce vitamin A, which is essential for eye function. State the nutrient required to prevent: scurvy rickets.
0610_m23_qp_42
THEORY
2023
Paper 4, Variant 2
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Some bacteria have had human genes inserted into them. The bacteria are said to be genetically modified. Describe what is meant by the term gene. One human protein that is made by genetically modified bacteria is insulin. State the role of insulin in the human body. Describe one other use of genetically modified organisms. State two reasons why bacteria are useful for genetic modification. State two ways in which bacterial cells are different from plant cells.
0610_m24_qp_32
THEORY
2024
Paper 3, Variant 2
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Questions Discovered
260