Ujian Akhir Semester Biologi Sel
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Biology
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University
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Muh. ITH
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50 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
Transpor pasif manakah yang secara khusus melibatkan perpindahan molekul air melalui membran selektif permeabel?
Difusi sederhana
Difusi terfasilitasi
Osmosis
Fagositosis
Eksositosis
2.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
Pompa Na⁺/K⁺ pada transpor aktif primer memindahkan ion dengan rasio dan arah …
3 Na⁺ masuk : 2 K⁺ keluar
3 Na⁺ keluar : 2 K⁺ masuk
2 Na⁺ masuk : 3 K⁺ keluar
1 Na⁺ keluar : 1 K⁺ masuk
2 Na⁺ keluar : 3 K⁺ masuk
3.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
Perbedaan utama antara difusi terfasilitasi dan difusi sederhana adalah …
Difusi terfasilitasi membutuhkan energi ATP
Difusi terfasilitasi melibatkan protein pembawa membran
Difusi terfasilitasi hanya untuk molekul air
Difusi terfasilitasi terjadi melawan gradien konsentrasi
Difusi terfasilitasi menghasilkan vesikula
4.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
Osmosis akan berhenti apabila …
Tekanan turgor mencapai maksimum
Konsentrasi larutan di kedua sisi membran sama (isotonik)
Semua protein pembawa jenuh
ATP habis terhidrolisis
pH larutan turun di bawah 7
5.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
Sel epitel usus harus menyerap glukosa melawan gradien konsentrasinya. Mekanisme yang paling mungkin digunakan adalah …
Antiport H⁺/glukosa
Symport Na⁺/glukosa
Uniport glukosa pasif
Pompa Ca²⁺ ‑ ATPase
Difusi terfasilitasi glukosa
6.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
Manakah pernyataan berikut salah tentang siklus pompa Na⁺/K⁺?
Fosforilasi protein pembawa menurunkan afinitasnya terhadap Na⁺
Dua ion K⁺ dilepas ke luar sel setelah defosforilasi
ATP diperlukan untuk mengubah konformasi protein
Afirmasi tinggi pada K⁺ muncul setelah protein melepaskan Na⁺
Siklus berulang dimulai lagi dengan pengikatan Na⁺ sitoplasmik
7.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
Sel β pankreas hendak melepaskan insulin ke ruang ekstraseluler. Jalur manakah paling efisien untuk proses ini?
Eksositosis
Difusi terfasilitasi
Symport Na⁺/insulin
Osmosis
Fagositosis
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