
Antioksidan
Authored by Fatma Syukrina
Other
University
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Antioksidan adalah senyawa yang bekerja dengan cara:
a. Mengurangi jumlah vitamin dalam tubuh
b. Menghambat atau menetralkan efek ROS/RNS dengan mendonorkan elektron atau atom hidrogen
c. Menambah jumlah radikal bebas untuk melawan bakteri
d. Menghancurkan semua lemak di membran sel
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Contoh mekanisme preventif antioksidan adalah:
a. Sistem perbaikan DNA
b. Vitamin C menangkap radikal bebas di cairan tubuh
c. Enzim katalase & SOD menetralkan molekul prekursor ROS
d. Vitamin E melindungi membran sel dari peroksidasi lipid
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Radikal bebas adalah molekul atau atom yang:
a. Tidak bisa bereaksi dengan molekul lain
b. Hanya ditemukan pada makanan
c. Memiliki satu atau lebih elektron tidak berpasangan pada kulit terluarnya
d. Memiliki semua elektron berpasangan
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Contoh Reactive Oxygen Species (ROS) adalah:
a. •OH
b. NO₂•
c. ONOO⁻
d. NO•
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Salah satu dampak radikal bebas pada protein adalah:
a. Memperbaiki fungsi biologis tubuh
b. Mengubah struktur asam amino sehingga enzim tidak aktif
c. Memecah membran sel menjadi lipid
d. Membentuk mutasi gen
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Penyakit yang berhubungan dengan stres oksidatif pada sistem kardiovaskular adalah:
a. Alzheimer
b. Diabetes tipe 2
c. Aterosklerosis
d. Katarak
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Antioksidan endogen berupa enzim yang mengubah H₂O₂ menjadi air dan oksigen adalah:
a. Glutation peroksidase
b. Katalase
c. Koenzim Q10
d. SOD
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