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.
What is the primary substrate required by yeast to produce alcohol and carbon dioxide in a brewery?
A.Proteins
B.Fats
C.Minerals
D.Sugars
- 2.
Which enzyme is used in the food industry to break down the substances in fruit cell walls, making the juice appear clearer?
A.Amylase
B.Lipase
C.Pectinase
D.Protease
- 3.
Which type of respiration is carried out by yeast during the industrial production of ethanol for biofuels?
A.Aerobic respiration
B.Anaerobic respiration
C.Photophosphorylation
D.Lactic acid fermentation
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.
An organism that contains DNA from a different species introduced via genetic engineering is described as:
A.Heterozygous
B.Mutagenic
C.Transgenic
D.Pathogenic
- 2.
In the context of genetic engineering, what is a plasmid?
A.The main chromosome of a bacterial cell.
B.A small, circular piece of DNA found in bacteria that acts as a vector.
C.A type of protein used to glue DNA together.
D.A specialized organelle used for protein synthesis.
- 3.
What is the primary reason for using bacteria like in the large-scale production of human insulin?
A.They have a very complex cellular structure similar to humans.
B.They can reproduce very quickly in a fermenter.
C.They naturally produce human insulin in their cytoplasm.
D.They are resistant to all known viruses.
Download the worksheet for Biotechnology and Genetic Engineering - Genetic engineering (Insulin production) to practice offline. It includes additional chapter-level practice questions.