Cell Structure
Gbogbo ọrọ náà
Cut a thin slice of any plant or animal under a microscope and you see the same thing: thousands of tiny, box-like units called cells. Cells are the building blocks of every living thing, and each part inside a cell has a specific job, from the nucleus that controls the cell to the mitochondria that release its energy.
In this lesson you will compare plant, animal and bacterial cells, learn what each structure does, and see how some cells are specially shaped for one task. You will also learn how cells build up into tissues, organs, organ systems and finally the whole organism.
Ebumnobi
- Describe and compare the structure of a plant cell with an animal cell, limited to: cell wall, cell membrane, nucleus, cytoplasm, chloroplasts, ribosomes, mitochondria, vacuoles
- Describe the structure of a bacterial cell, limited to: cell wall, cell membrane, cytoplasm, ribosomes, circular DNA, plasmids
- Identify the cell structures listed in
- Describe the functions of the structures listed in
- State that new cells are produced by division of existing cells
- State that specialised cells have specific functions, limited to: (a) ciliated cells - movement of mucus in the trachea and bronchi (b) root hair cells - absorption (c) palisade mesophyll cells - photosynthesis (d) neurones - conduction of electrical impulses (e) red blood cells - transport of oxygen (f) sperm and egg cells (gametes) - reproduction
- Describe the meaning of the terms: cell, tissue, organ, organ system and organism as illustrated by examples given in the syllabus
Nkuzi Olu
Gee ntị na nkuzi a na ngwa
Maapụ uche
E seela isiokwu a ka ị hụ otu echiche si ejikọta.
Mepee maapụ uche na ngwa
Kaadị ncheta
Omume ncheta ngwa ngwa n'ihe a na-anwale n'isiokwu a.
Mee omume kaadị ndị a na ngwa
Akwụkwọ Ọmụmụ
Ndetu Nkuzi Zuru Ezu di na Ngwa Green Bridge
Nweta ngwa Green Bridge CBT na ekwenti gi ma o bu kompiuta maka ulo akwukwo IGCSE zuru oke: akwukwo ule ndi gara aga, usoro nyocha, eserese uche, kaadi omumu na nkuzi olu.
Nnyocha Ọmụmụ
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.
- Which structure is found in a plant cell but NOT in an animal cell? A. nucleus B. cell membrane C. chloroplast D. mitochondrion Answer: C
- The site of aerobic respiration in a cell is the: A. nucleus B. ribosome C. mitochondrion D. vacuole Answer: C
- A bacterial cell stores its genetic material as: A. a nucleus B. chloroplasts C. circular DNA and plasmids D. a vacuole Answer: C
- Which level of organisation is a group of tissues working together? A. cell B. organ C. organ system D. organism Answer: B
- A red blood cell is adapted to carry oxygen because it: A. has a large nucleus B. has no nucleus and is full of haemoglobin C. contains chloroplasts D. has a cell wall Answer: B
Rue ajuju ndi a n'ime ngwa ahu
Rue ajuju ndi a n'ime ngwa ahu
Akwụkwọ A Na-atụ Aro
Mụtakwuo ihe site na isi mmalite mepere emepe
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Akụkụ akwụkwọ
Eukaryotic Cells
Describe the structure of eukaryotic cells
"Biology: Eukaryotic Cells" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/biology/pages/4-3-eukaryotic-cells. Access for free at https://openstax.org/books/biology/pages/1-introduction
Ndị otu ndị ọzọ bipụtara ha n'okpuru ikike mepere emepe, anyị na-ekele ha dị ka ha si chọọ. Njikọ na-emepe saịtị ha.
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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