Muaj pes tsawg immunoglobulin noob muaj?

Video: Muaj pes tsawg immunoglobulin noob muaj?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Cov antigens muaj ntau yam sib txawv; yuav tau teb rau lawv, cov immunoglobulins yuav tsum muaj sib npaug sib npaug ( nyob ntawd yog 10¹¹ rau 10¹² sib txawv Igs!), uas sib haum mus rau ntau haiv neeg ntawm cov amino acids ntawm N-terminal qhov chaw ntawm L thiab H chains (piv txwv li mus rau qhov sib txawv domains).

Xav txog qhov no, dab tsi yog 5 immunoglobulins?

Muaj tsib chav kawm immunoglobulin (isotypes) ntawm cov tshuaj tiv thaiv kab mob hauv cov ntshav: IgG, IgM , IgA , IgE thiab IgD . Lawv txawv los ntawm hom hnyav saw lawv muaj. IgG molecules muaj hnyav chains hu ua γ-chains; IgMs muaj Μ-chains; IgAs muaj α-chains; IgEs muaj ε-chains; thiab IgDs muaj δ-chains.

Muaj pes tsawg cov tshuaj tiv thaiv hauv tib neeg lub cev? Nws tau kwv yees tias tib neeg tsim txog 10 billion txawv tshuaj tiv thaiv , txhua tus muaj peev xwm los khi ib qho epitope ntawm ib qho antigen.

Kuj paub, dab tsi yog immunoglobulin gene rearrangement?

Cov immunoglobulin (Ig) noob (hnyav, kappa, thiab lambda) muaj ntau yam, tsis tu ncua coding ntu. Raws li B hlwb tsim, ntu yog rov kho dua xws li tias txhua tus laus B cell thiab plasma cell muaj qhov tshwj xeeb kev kho dua tshiab profile. Lwm hom cell feem ntau khaws cov nonrearranged noob cov qauv.

C Gene yog dab tsi?

Kev kho mob txhais ntawm C noob :ib noob tas kod caj ces cov ntaub ntawv rau thaj tsam tas li ntawm ib qho immunoglobulin - piv v noob.

Pom zoo:

Muaj pes tsawg cov noob tswj tus nplaig dov?

Qhov no tsis tau txhais hais tias tus nplaig dov tsis muaj caj ces "kev cuam tshuam," McDonald hais. Ntau tshaj ib lub noob tuaj yeem ua rau muaj peev xwm ntawm tus nplaig. Tej zaum tib cov noob uas txiav txim siab tus nplaig qhov ntev lossis cov leeg nqaij muaj kev koom tes. Tab sis tsis muaj ib qho tseem ceeb gene uas yog lub luag haujlwm

Dab tsi yog txhais los ntawm cov noob tseem ceeb thiab cov noob caj noob ces?

(Nyob rau hauv cov ntsiab lus ntawm caj ces, ib qho tseem ceeb tshaj plaws yog ib qho uas yog phenotypically qhia hauv heterozygotes). Ib qho tseem ceeb tshaj plaws yog tawm tsam qhov tsis zoo uas tshwm sim tsuas yog thaum muaj ob daim ntawv theej ntawm cov noob. (Nyob rau hauv cov ntsiab lus genetic, ib tug recessive zoo yog ib tug uas yog phenotypically qhia tsuas yog nyob rau hauv homozygotes)

Muaj pes tsawg guanine bases puas yog 50 lub hauv paus khub ob txoj hlua DNA 100 bases tag nrho muaj yog tias nws muaj 25 adenine bases?

Yog li, muaj tag nrho ntawm 25 + 25 = 50 adenine thiab thymine hauv tag nrho. Qhov ntawd tawm 100− 50 = 50 seem hauv paus. Nco ntsoov tias cytosine thiab guanine daim ntawv cog lus nrog ib leeg, thiab yog li lawv sib npaug ntawm cov nyiaj. Tam sim no peb tuaj yeem faib los ntawm 2 kom tau txais tus lej ntawm guanine lossis cytosine hauv paus

Yuav ua li cas muaj pes tsawg tus noob sib xyaw ua tau hauv gamete ntau lawm rau Dihybrid cross Vim li cas thiaj muaj ntau?

Muaj peev xwm gametes rau txhua tus niam txiv AaBb Txij li thaum txhua tus niam txiv muaj plaub qhov sib txawv ntawm cov alleles hauv gametes, muaj kaum rau kev sib txuas ua ke rau tus ntoo khaub lig no