Biotechnology and Genetic Engineering
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Biotechnology and yeast
SubtopicBiotechnology and yeast under Biotechnology and Genetic Engineering for Grade 12 IGCSE.
Preview questions (no answers)
- 1.
Which of the following is required for yeast to grow and reproduce in a fermenter?
A.Complete darkness
B.A source of amino acids and minerals
C.Toxic chemicals
D.High levels of carbon monoxide
- 2.
What role does yeast play in the production of some traditional cheeses or fermented foods?
A.It provides the structure of the food.
B.It contributes to the flavor and texture through metabolic activity.
C.It acts as a preservative by freezing the food.
D.It removes all the salt from the food.
- 3.
In the context of the environment, why is ethanol considered a 'biofuel'?
A.It is made from non-renewable oil.
B.It is produced from biological sources like plants and yeast.
C.It does not release any carbon dioxide when burned.
D.It is a mineral found in the ground.
Download the worksheet for Biotechnology and Genetic Engineering - Biotechnology and yeast to practice offline. It includes additional chapter-level practice questions.
Genetic engineering (Insulin production)
SubtopicGenetic engineering (Insulin production) under Biotechnology and Genetic Engineering for Grade 12 IGCSE.
Preview questions (no answers)
- 1.
Which of these describes the bacteria after they have received the human gene?
A.Infected
B.Transformed
C.Deceased
D.Extinct
- 2.
What is the biological name for the circular DNA molecule found in bacteria that is manipulated in genetic engineering?
A.Chromosome
B.Plasmid
C.Nucleolus
D.Ribosome
- 3.
In a fermenter, why is the pH monitored and adjusted?
A.To keep the water clear
B.To provide the best environment for the enzymes within the bacteria
C.To change the bacteria into humans
D.To stop the paddles from rust
Download the worksheet for Biotechnology and Genetic Engineering - Genetic engineering (Insulin production) to practice offline. It includes additional chapter-level practice questions.