
Kuis Evaluasi Aktivitas Antioksidan
Quiz
•
Science
•
University
•
Practice Problem
•
Hard
Hanif Manshur
Used 6+ times
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25 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 4 pts
Radikal bebas adalah
Ion bermuatan negatif yang tidak reaktif
Produk samping antioksidan enzimatik
Molekul yang stabil dengan pasangan elektron lengkap
Molekul yang mengandung satu atau lebih elektron tidak berpasangan
2.
MULTIPLE CHOICE QUESTION
20 sec • 4 pts
Kerusakan biomolekul akibat radikal bebas dapat memicu penyakit degeneratif seperti
Kanker, jantung, alzheimer
Influenza, diare, TBC
Malaria, tifus, HIV
Anemia, demam berdarah, rabies
3.
MULTIPLE SELECT QUESTION
20 sec • 4 pts
Perhatikan 4 pernyataan berikut:
1. Sumber radikal bebas hanya berasal dari luar tubuh mahluk hidup
2. Paparan UV, polusi udara, asap rokok, dan radiasi ion adalah contoh sumber radikal bebas eksternal
3. Peradangan menjadi proses yang penting untuk mencegah terbentuknya radikal bebas
4. Radikal bebas dapat menyebabkan kerusakan DNA dalam sel.
Pilih jawaban yang benar :
1,2, dan 3 benar
1 dan 3 benar
2 dan 4 benar
Semua benar
4.
MULTIPLE SELECT QUESTION
20 sec • 4 pts
Contoh senyawa radikal bebas dari kelompok spesies oksigen reaktif (ROS) adalah
Hidrogen peroksida (H₂O₂)
Superoksida (O₂•-)
Ozon (O₃)
Singlet oxygen (¹O₂)
5.
MULTIPLE CHOICE QUESTION
20 sec • 4 pts
Mekanisme reaksi oksidasi berantai oleh ROS terdiri atas tahapan
Adsorpsi - desorpsi - terminasi
Inisiasi - propagasi - terminasi
Oksidasi - reduksi - netralisasi
Hidrolisis - polimerisasi - terminasi
6.
MULTIPLE CHOICE QUESTION
20 sec • 4 pts
Tahap terminasi dalam reaksi oksidasi berantai oleh ROS menghasilkan
Radikal baru
Peroksil radikal
Hidroksil radikal
Produk non-radikal
7.
MULTIPLE CHOICE QUESTION
20 sec • 4 pts
Singlet oxygen termasuk
ROS radikal
ROS non-radikal
RNS radikal
RNS non-radikal
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