antibody同antibiotic有咩分別?

ANTIBODY is a large Y-shaped protein used by the immune system to identify and neutralize foreign objects like bacteria and viruses.
Each antibody recognizes a specific antigen unique to its target.This is because the two tips of the "Y" of the antibody contain a paratope (a structure analogous to a lock) that is specific for one particular epitope (analogous to a key) on an antigen, allowing these two structures to precisely bind together. (Lock and Key Theory)

ANTIBIOTIC is a drug that kills or prevents the growth of bacteria. They have no effect against viruses or fungal infections.
Antibiotics are generally small molecules BUT They are not enzymes. Some antibiotics have been derived from mold.
They are relatively harmless to the host.
Some antibiotics actually kill the bacteria (bactericidal), whereas others merely prevent the bacteria from multiplying (bacteriostatic) so that the host's immune system can overcome them.

antibody同antibiotic有咩分別?
Antibody是由生物所生產的,生物是指人,馬等. 只要他們的身體受到病毒或細菌(稱為抗原antigen)的入侵,在他們身體內的免疫系統就會作出反應,生產出抗體.例如在母親的體內生產出抗體IgG(Ig=immunoglobulin)去保護嬰兒.由例如市面上出售的抗體是由動物身上抽取的,方法是把病毒或細菌打入動物的身體,之後就把它的血清抽取,進行提煉,由於這些antibody是蛋白的一種,所以會在它到了有效後分解.當然它在發揮完它的功用後,它會消失的.
Antibody的功用是
一:黏在被感染的細胞上(叫做opsonin),令到巨噬細胞可以吃掉它們.
二是造anti-toxin去抵抗antigen生產的toxin

antibiotic是由細菌,真菌或化學合成所造出來的.例子有
(1)青霉素是由葡萄球菌(Staphylococcus aureus)中取得的.它的作用是殺死細菌
(2)磺胺類(Sulfonamide)是化學合成的,它的作用是抑制細菌生長.
(3)大環內酯類抗生素(Macrolide)是由泥土中的菌類植物取得的以Erythromycin為例,是用來醫中耳炎及梅毒

總結
Antibody是由生物所生產的
antibiotic是由細菌,真菌或化學合成所造出來的

希望幫到你.

antibiotic係抗生的;抗菌的or抗生素,抗菌素
antibody係抗體