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Pertemuan 1

LEMBAR KERJA SISWA (LKS)(Kelas kontrol)

SISTEM PERTAHANAN TUBUH

PETUNJUK: Diskusikanlah bersama kelompokmu jawaban yang tepat untuk pertanyaan berikut ini!1. Perhatikan gambar berikut!

Dari gambar tersebut, jelaskan mekanisme fagositosis oleh sel fagosit!(skor 20)Jawab :

................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................2. Perhatikan gambar! ..ab fagositosis oleh sel fagosit!agosit

Kerusakan jaringan akibat tertusuk paku akan memicu terjadinya respon peradangan. Berdasarkan gambar, buatlah skema tahapan respon peradangan tersebut! (skor 20) Jawab :

..............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................2. Perhatikan gambar!

Gambar tersebut merupakan respon humoral terhadap antigen. Gambar apakah yang ditunjukkan oleh huruf A, B, C, dan D? Tuliskan peranan dari masing-masing gambar! (skor 15)Jawab :..............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................3. Dengan bantuan gambar dibawah ini, jelaskan cara sel T sitotoksik menghancurkan sel yang terinfeksi! (skor 20)

Jawab : ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

Tujuan pembelajaran :

1. siswa mampu menguraikan mekanisme fagositosis

2. siswa mampu pengurutkan tahapan respon peradangan

3. siswa mampu menguraikan mekanisme kekebalan humoral

4. siswa mampu menjelaskan mekanisme kekebalan seluler

.

Pertemuan 1

mikroba

patogen

paku

Sel darah putih

Pembuluh darah

Sel sel fagosit

Sinyal kimia

A

D

C

Protein MHC

antibodi

Sel B

antigen

Fragmen antigen

Reseptor

B

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