سؤال مهم (ما الفرق بين الخلية الحيوانية والنباتية)

[د.فداء خالد]

السلام عليكم ورحمة الله وبركاته
ارجو الاجابة على السؤال التالي باللغة الانجليزية ويااااااااااااريت بسرعة
(يااااااريت اليوم)
ما الفرق بين الخلية الحيوانية و الخلية النباتية؟؟؟؟
أرجو اجابة علمية وشاملة وباللغة الانجليزية ضروري جدا اليوم
ولكم جزيل الشكر والامتنان

[عاصم]

Prokaryotic cells

Prokaryotes are distinguished from eukaryotes on the basis of nuclear organization, specifically their lack of a nuclear membrane. Prokaryotes also lack most of the intracellular organelles and structures that are characteristic of eukaryotic cells (an important exception is the ribosomes, which are present in both prokaryotic and eukaryotic cells). Most of the functions of organelles, such as mitochondria, chloroplasts, and the Golgi apparatus, are taken over by the prokaryotic plasma membrane. Prokaryotic cells have three architectural regions: appendages called flagella and pili — proteins attached to the cell surface; a cell envelope consisting of a capsule, a cell wall, and a plasma membrane; and a cytoplasmic region that contains the cell genome (DNA) and ribosomes and various sorts of inclusions. Other differences include:

1. The plasma membrane (a phospholipid bilayer) separates the interior of the cell from its environment and serves as a filter and communications beacon.

1. Most prokaryotes have a cell wall (some exceptions are Mycoplasma (a bacterium) and Thermoplasma (an archaeon)). It consists of peptidoglycan in bacteria, and acts as an additional barrier against exterior forces. It also prevents the cell from "exploding" (cytolysis) from osmotic pressure against a hypotonic environment. A cell wall is also present in some eukaryotes like fungi, but has a different chemical composition.

1. A prokaryotic chromosome is usually a circular molecule (an exception is that of the bacterium Borrelia burgdorferi, which causes Lyme disease). Even without a real nucleus, the DNA is condensed in a nucleoid. Prokaryotes can carry extrachromosomal DNA elements called plasmids, which are usually circular. Plasmids can carry additional functions, such as antibiotic resistance.

Eukaryotic cells

Eukaryotic cells are about 10 times the size of a typical prokaryote and can be as much as 1000 times greater in volume. The major difference between prokaryotes and eukaryotes is that eukaryotic cells contain membrane-bound compartments in which specific metabolic activities take place. Most important among these is the presence of a cell nucleus, a membrane-delineated compartment that houses the eukaryotic cell's DNA. It is this nucleus that gives the eukaryote its name, which means "true nucleus". Other differences include:

1. The plasma membrane resembles that of prokaryotes in function, with minor differences in the setup. Cell walls may or may not be present.

1. The eukaryotic DNA is organized in one or more linear molecules, called chromosomes, which are associated with histone proteins. All chromosomal DNA is stored in the cell nucleus, separated from the cytoplasm by a membrane. Some eukaryotic organelles also contain some DNA.

1. Eukaryotes can move using cilia or flagella. The flagella are more complex than those of prokaryotes.

طبعا الكلام منقول من كم موقع بيولوجي .
أناحاولت أنزل جزل بس ما صار .. لو قدرت بانزله لك . بيكون اوضح
يارب قدرت أفيد

نص دكتور : مجرد انسان

[خالد الشهري]

ارجوا وامل منكم الإجابة على هذا السؤال (بالعربي) وبسرعة ويا ليت يكون مختصر لأن بنتي عندها اختبار في مادة الأحياء 0 ( please ) ولكم جزيل الشكر والعرفان 0
سؤال / ما الفرق بين الخلية الحيوانية والنباتية ؟

اخوكم/خالد الشهري/ من السعودية 0

[كيمة]

اريد نفس الموضوع باللغة العربية ...جزاكم اله الف خير

[Dr.isra]

مقارنة بين الخلية الحيوانية والخلية النباتية

الخلية الحيوانية................... الخلية النباتية
لايوجد بلاستيدات خضراء....... يوجد بلاستيدات خضراء

النواة مركزية..................... النوة طرفية
يوجد جسم مركزي................ لا يوجد جسم مركزي
لايوجد جدار خلوي............... يوجد جدار خلوي

هاي الفروق بشكل بسيط ولمعلومات اوسع مع الصور اضغط على الرابط:
http://www.khayma.com/mtwan/kalia2.htm

[Dr.isra]

واليك الرابط التالي
http://ar.wikipedia.org/wiki/%D8%AE%D9%84%D9%8A%D8%A9

[عاصم]

يعطيك ألف عافية دكتورة اسراااء على ها الروااابط .. .

بارك الله فيك .. على جهودك الواضحة في الملتقى ..

مبدعة أختي .. .

ويار يستفيدو منها كل طلاب المرحلة الأولية ..

تحياتي