Biology - 4BI1 PearsonEdexcel

Cell Structure

Gbogbo ọrọ náà

Every living organism, from the smallest bacterium to the tallest tree, is built from cells. Understanding how cells are structured is the foundation of biology: once you know what sits inside a cell and what each part does, you can explain how organisms feed, grow, respire and reproduce.

In this lesson you will learn the structures found in animal and plant cells, discover what makes them different, and explore how cell differentiation produces the specialised cells that multicellular organisms depend on. You will also weigh up the advantages and disadvantages of using stem cells in medicine.

Ebumnobi

  1. Describe cell structures, including the nucleus, cytoplasm, cell membrane, cell wall, mitochondria, chloroplasts, ribosomes and vacuole
  2. Describe the functions of the nucleus, cytoplasm, cell membrane, cell wall, mitochondria, chloroplasts, ribosomes and vacuole
  3. Know the similarities and differences in the structure of plant and animal cells
  4. Explain the importance of cell differentiation in the development of specialised cells
  5. Understand the advantages and disadvantages of using stem cells in medicine

Akọmọ Ojú-ẹkọ

Every cell is a self-contained unit surrounded by a boundary. Inside that boundary, specialised structures called organelles carry out the chemical reactions that keep the cell alive. Some organelles are shared by all cells; others are unique to plants. Knowing which structures are present, and what they do, lets you explain everything from why leaves are green to why muscles need a steady supply of oxygen.

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 Cell Structure. 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 structure is found in plant cells but not in animal cells? A) Nucleus B) Mitochondria C) Cell wall D) Ribosome Answer: C
  2. What is the function of mitochondria? A) Photosynthesis B) Protein synthesis C) Aerobic respiration D) Controlling cell activities Answer: C
  3. Red blood cells have no nucleus. This is an advantage because: A) They can move faster through blood vessels B) There is more space for haemoglobin to carry oxygen C) They can divide more easily D) They do not need energy Answer: B
  4. Which of the following best describes a stem cell? A) A cell that has been fully differentiated B) An undifferentiated cell that can develop into different cell types C) A cell found only in plant roots D) A cell with no nucleus Answer: B
  5. What is the role of the permanent vacuole in a plant cell? A) It carries out photosynthesis B) It stores genetic material C) It is filled with cell sap and helps maintain turgor pressure D) It is the site of respiration 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 Cell Structure? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.

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