Biotechnology
Muhtasari
Long before anyone understood DNA, humans were using living organisms to make food: yeast to raise bread and brew alcohol, microbes to make cheese and yoghurt. Today the same idea, harnessing enzymes and microbes in industry, produces biofuels, clearer fruit juice, cleaner laundry and lactose-free milk, often in giant steel fermenters.
In this lesson you will describe the role of anaerobic respiration in yeast for biofuels and bread, the use of pectinase, lactase and the enzymes in biological washing powders, and (for [Supplement]) how fermenters mass-produce insulin, penicillin and mycoprotein under carefully controlled conditions.
Malengo
- Describe the role of anaerobic respiration in yeast during the production of ethanol for biofuels
- Describe the role of anaerobic respiration in yeast during bread-making
- Describe the use of pectinase in fruit juice production
- Investigate and describe the use of biological washing powders that contain enzymes
- [Supplement] Explain the use of lactase to produce lactose- free milk
- [Supplement] Describe how fermenters can be used for the large-scale production of useful products by bacteria and fungi, including insulin, penicillin and mycoprotein
- [Supplement] Describe and explain the conditions that need to be controlled in a fermenter, including: temperature, pH, oxygen, nutrient supply and waste products
Maelezo ya Somo
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Tathmini ya Somo
Hongera kwa kukamilisha somo la Biotechnology. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.
Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.
Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.
- Anaerobic respiration in yeast produces: A. ethanol and carbon dioxide B. oxygen and water C. lactic acid only D. glucose and oxygen Answer: A
- In bread-making, the useful product of yeast fermentation is: A. ethanol B. carbon dioxide C. lactic acid D. oxygen Answer: B
- Pectinase is used in fruit-juice production to: A. add sugar B. break down pectin to release and clarify juice C. kill bacteria D. add colour Answer: B
- Biological washing powders work poorly in very hot water because the enzymes are: A. diluted B. denatured C. frozen D. used up as fuel Answer: B
- [Supplement] Lactase is used to make milk suitable for lactose-intolerant people by: A. removing all sugar B. breaking lactose into glucose and galactose C. adding lactose D. killing bacteria Answer: B
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Vitabu Vinavyopendekezwa
Fanya Mazoezi ya Maswali ya Majaribio
Ungependa kufanya mazoezi ya maswali ya majaribio kuhusu Biotechnology? Pakua programu ya Green Bridge CBT ili kupata maswali ya majaribio na tathmini kamili za mazoezi kuhusu mada hii.
Pakua Programu Kwenye Google Playstore
Kila kitu unachohitaji ili kufaulu katika JAMB, WAEC & NECO.
