Học bài tb để làm gì

A. MÀNG TB:

I. Học THÀNH PHẦN HÓA HỌC CỦA MÀNG để: Lipid để làm gì? Protein để làm gì? Đường có tham gia gì không? Ứng dụng LS.

II. MÔ HÌNH CẤU TRÚC DÒNG KHẢM: Ứng dụng LS.

III. KÊNH TRÊN MÀNG TẾ BÀO: Ứng dụng LS rất nhiều, phải học kỹ.

IV. BƠM: rất quan trọng học kỹ, đọc ECG. More

B. NHÂN& BÀO QUAN : Học mitosis, miosis, replication, duplication.

Nắm được 4 từ trên, rồi học tiếp : The cell nucleus contains the majority of the cell’s genetic material in the form of multiple linear DNA molecules organized into structures called chromosomes. Each human cell contains roughly two meters of DNA. During most of the cell cycle these are organized in a DNA-protein complex known as chromatin, and during cell division the chromatin can be seen to form the well-defined chromosomes familiar from akaryotype. A small fraction of the cell’s genes are located instead in themitochondria.

White cells, containing a nucleus and able to produce ribonucleic acid (RNA), can synthesize protein. White cells are highly differentiated for their specialized functions, and they do not undergo cell division (mitosis) in the bloodstream; however, some retain the capability of mitosis.

Tại sao HC không nhân, còn BC có nhân. Nhân BC để làm gì?

Why do you expect them not to have nucleus?! Every cell has a nucleus. Red Blood Cells don’t becuz they’re specified to have more Hb to carry O2. 

White Blood Cells in common with many other cells have nucleus to control their activities, regulate their secretory, in one word, to arrange their life! 
White Blood Cells have nucleus due to below reasons: 
-they must have antibodies to detect antgenes and prevent them from teasing us! [these antibodies are protein based and they’re built from a genetic code which is in the nucleus!] 
-they must have nucleus to regulate their growth, cell division, and differention in order to build plasmocytes and memory cells. 

-They must have, to secrete antibodies to attack antigenes.[must have genes to be transcripted to mRNA and at last be translated on Ribosomes which are located on RERs.]

Chú ý: Transcription factor (Xem), phân biệt transcription & translation (Xem).

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