Biology - 4BI1 PearsonEdexcel

Food Production

Gbogbo ọrọ náà

From the bread on your table to the salmon on your plate, humans have developed ingenious ways to harness living organisms for food production. Farmers manipulate growing conditions in glasshouses, add fertilisers, deploy biological pest control, and raise fish in carefully managed enclosures - all to feed a growing population more reliably.

This topic takes you through modern food production methods: how glasshouses boost crop yields, why biological control can outperform pesticides, how yeast and bacteria transform raw ingredients into bread and yoghurt, and what makes industrial fermenters so effective. You will also explore the principles behind fish farming and why it has become an important protein source worldwide.

Ebumnobi

  1. Describe how glasshouses and polythene tunnels can be used to increase the yield of certain crops
  2. Understand the effects on crop yield of increased carbon dioxide and increased temperature in glasshouses
  3. Understand how the use of fertiliser can increase crop yield
  4. Understand the reasons for pest control and the advantages and disadvantages of using pesticides and biological control with crop plants
  5. Understand the role of yeast in the production of food including bread
  6. Investigate the role of anaerobic respiration by yeast in different conditions
  7. Understand the role of bacteria (Lactobacillus) in the production of yoghurt
  8. Understand the use of an industrial fermenter and explain the need to provide suitable conditions in the fermenter
  9. Understand the methods used to farm large numbers of fish to provide a source of protein

Akọmọ Ojú-ẹkọ

A single hectare of land inside a modern glasshouse can produce ten times the crop yield of the same area in an open field. Meanwhile, fish farms now supply over half the fish eaten globally. The biology behind these advances is surprisingly straightforward: control the limiting factors of photosynthesis, manage pests without harming ecosystems, and put microorganisms to work in sealed fermenters.

Ọ dị na ngwa Green Bridge

Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.

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Ayẹwo Ẹkọ

Ekele diri gi maka imecha ihe karịrị na Food Production. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.

Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.

Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.

  1. Which gas is added to a glasshouse to increase crop yield? A) Oxygen B) Nitrogen C) Carbon dioxide D) Methane Answer: C
  2. Which bacterium is used in the production of yoghurt? A) E. coli B) Lactobacillus C) Streptococcus D) Salmonella Answer: B
  3. What is the role of carbon dioxide produced by yeast in bread making? A) It flavours the bread B) It kills bacteria in the dough C) It causes the dough to rise D) It preserves the bread Answer: C
  4. Why does an industrial fermenter have a water-cooled jacket? A) To speed up the reactions B) To provide water for the microorganisms C) To prevent the temperature rising too high D) To sterilise the contents Answer: C
  5. Which of the following is an advantage of biological control over pesticides? A) It works faster B) It eliminates the pest completely C) It does not cause chemical pollution D) It is cheaper to set up Answer: C

Ọ dị na ngwa Green Bridge

Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.

Akwụkwọ ndụmọdụ zuru oke nwere eserese
Onye inyeaka mmụta AI
Mụọ n'ụzọ na-enweghị ịntaneti, oge ọbụla, ebe ọbụla
Ọ dị na Android, Windows, macOS, na Linux

Ọ dị na ngwa Green Bridge

Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.

Akwụkwọ ndụmọdụ zuru oke nwere eserese
Onye inyeaka mmụta AI
Mụọ n'ụzọ na-enweghị ịntaneti, oge ọbụla, ebe ọbụla
Ọ dị na Android, Windows, macOS, na Linux

Meecha Ajụjụ Ule Ọmarịcha

Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Food Production? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.

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