
Otot dan Mekanisme Gerak
Authored by Dede Abdul Mujib
Biology
11th Grade
Used 528+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Bagian yang ditunjukan oleh nomor 8 adalah ....
endomisium
fasikulus
miofibril
sarkolema
sarkoplasma
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Secara keseluruhan, otot dibungkus oleh selapis jaringan ikat agak padat yang ditunjukan oleh nomor ....
1
2
3
4
5
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Serabut otot tunggal yang bergabung menjadi satu golongan serabut atau berkas disebut ....
endomisium
epimisium
fasikulus
perimisium
sarkolema
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Fungsi utama otot adalah ....
alat gerak aktif
alat gerak pasif
menegakan tubuh
memberi bentuk tubuh
memberikan fleksibilitas gerak
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Gerakan mengerutnya otot sehingga terjadi pemendekan serabut otot disebut ....
osifikasi
lokomosi
peristaltik
kontraksi
relaksasi
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Pada mekanisme kerja otot, proses penarikan aktin oleh miosin pada kontaksi otot dimulai ketika ....
ATP menempel pada miosin
ATP dihidrolisis menjadi ADP dan P
Ion Ca berikatan dengan troponin
Ion Ca berikatan dengan tropomiosin
Impuls saraf tiba di neuromuscular junction
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Peranan kalsium dalam kontraksi otot adalah ....
memutuskan titian silang sebagai kofaktor dalam hidrolisis ATP
berikatan dengan troponin sehingga pengikatan miosin pada aktin menjadi terbuka
menghantarkan potensial aksi melewati persambungan neuromuscular
menyebarkan potensial aksi melalui tubula T
memantapkan kembali polarisasi membran plasma setelah potensial aksi
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