Genetic modification

Bacteria can be genetically engineered to make human insulin. Prior to the development of this technique, the only insulin available came from cattle or pigs. It was extracted from animal pancreases. Which statements about the two methods are correct?

May/June 2015

Genetic engineering may be used to add new characteristics to animals and plants. Which characteristic is unlikely to be added to a cereal crop plant by genetic engineers?

May/June 2016

Which statements regarding genetic engineering used to produce human insulin are correct?

May/June 2016

Fig. 4.1 outlines the steps in genetic engineering used to manufacture the hormone insulin.

May/June 2016

Insulin is produced on a commercial scale by means of genetic engineering. Which kind of organism is employed to make large amounts of insulin in this manner?

May/June 2017

Which statements about genetically engineered plants indicate possible benefits?

May/June 2018

Which statement about genetic engineering is incorrect?

May/June 2019

Which plant genetic engineering product is associated with farming methods that could reduce biodiversity?

May/June 2019

Several steps in the manufacture of human insulin are shown below. 1. Genetically modified $E.\ coli$ bacteria are cultured in large fermenters. 2. The gene for human insulin is placed into the DNA of a bacterium named $E.\ coli$. 3. The gene for human insulin is taken from human pancreas cells. 4. Human insulin is then removed and purified. What is the correct order of these stages?

May/June 2021

Human insulin genes may be introduced into bacteria. The bacteria can then be grown in culture and will make human insulin as a by-product. What advantage does a patient gain from using this source of insulin instead of insulin from animals?

May/June 2022

The stages involved in producing insulin on a commercial scale are given. Which order of events is correct?

May/June 2022

During the genetic modification process used to produce artificial insulin (a protein), what material is introduced into the host bacterium, and what consequences does this produce?

May/June 2024

Bacteria may be genetically modified so that they manufacture human insulin by inserting a human insulin gene into the bacterial DNA. What benefit does this procedure have?

Oct/Nov 2015

Bacteria can be genetically engineered to make human insulin by inserting a human insulin gene into bacterial DNA. What is one advantage of carrying out this procedure?

Oct/Nov 2015

Which process is employed to manufacture insulin on a commercial scale?

Oct/Nov 2016

What process is used to manufacture insulin commercially?

Oct/Nov 2016

The gene responsible for insulin production can be isolated from human pancreatic cells and inserted into the genetic material of a harmless bacterium. What would be the next step in using this method to treat diabetes?

Oct/Nov 2017

What is one possible risk of growing genetically engineered crops?

Oct/Nov 2017

The diagram depicts the male reproductive organs in humans together with the related structures.

Oct/Nov 2018

Which of the following is not an advantage of genetic engineering?

Oct/Nov 2019

Plants take in light energy for the process of photosynthesis.

Oct/Nov 2019

Which of the following statements about using bacteria to make human insulin are correct?

Oct/Nov 2020

State one advantage of genetic engineering.

Oct/Nov 2021

What benefits can genetic engineering of crops bring?

Oct/Nov 2022

A gene responsible for insulin production can be moved from human DNA into bacterial DNA. The bacteria are then grown to make human insulin. What advantage does this type of human insulin have for patients compared with insulin taken from other animals?

Oct/Nov 2022

The gene for human insulin production can be inserted into bacterial DNA so that insulin can be manufactured on an industrial scale. What is an advantage of using this type of insulin to treat a patient with diabetes?

Oct/Nov 2024

In many countries, such as the United States of America (USA), farmers keep cows so that milk is produced. The milk is then sold for human consumption.

Oct/Nov 2024

What might be one advantage of genetically modifying crop plants?

Oct/Nov 2025

Several stages in the manufacture of human insulin are given below. 1. Genetically modified E. coli bacteria are cultivated in large fermenters. 2. The gene for human insulin is placed into the DNA of an E. coli bacterium. 3. The gene for human insulin is taken from human pancreas cells. 4. Human insulin is removed and purified. Which sequence of stages is correct?

Oct/Nov 2025