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Soal Olimpiade Biologi SMA Internasional (IBO) Singapura

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Maslatip.com – Kolom bank soal olimpiade pada kesempatan ini akan berbagi soal olimpiade biologi SMA internasional yang digunakan dalam International Biology Olympiad (IBO) yang di selanggarakan pada tahun 2012 di Singapura. Soal olimpiade biologi SMA ini terdiri dari 3 bagian yaitu soal THEORETICAL TEST PAPER 1, THEORETICAL TEST PAPER 2, dan PRACTICAL TEST. Berikut ini contoh soal olimpiade biologi SMA tersebut.

Contoh Soal Olimpiade Biologi IBO Nomor 1 :

Arrange the following plants A to C in evolutionary order starting with the most primitive specimen to the most modern.

penampang-batang-IBOContoh Soal Olimpiade Biologi IBO Nomor 2 :

There are various mechanisms by which a cell can commit suicide – a phenomenon known as “apoptosis”. One of the mechanisms is triggered by reactive oxygen species. The outer membrane of mitochondria normally expresses a protein Bcl-2 on its surface. Another protein Apaf-1 binds Bcl-2. Reactive oxygen species cause Bcl-2 to release Apaf-1 and a third protein Bax to penetrate the mitochondrial membrane, releasing cytochrome c. The released cytochrome c forms a complex with Apaf-1 and caspase 9. This complex sequentially activates many proteases that digest cellular proteins.

What will be the fate of a cell exposed to reactive oxygen species in the following conditions?

I.     The cell has expressed a mutant form of Apaf-1 that constitutively (always) bind Bcl-2.
II.   The cell does not express Bcl-2 at all.
III. The cell overexpresses a form of Bcl-2 that is targeted to cell membrane only.
IV.  A chemical which extends the half life of Bcl-2 is added to the cell.

Match the following fates of the cell with the conditions (I to IV).
a. The cell resists apoptosis.
b. The cell is forced towards apoptosis.
c. The fate of the cell cannot be predicted.

Contoh Soal Olimpiade Biologi IBO Nomor 3 :

Two bacterial cells were cross sectioned, and Bacterium A showed a single membrane covering its cell, while Bacterium B is covered by two membranes which are separated by a narrow space containing peptidoglycan material. Identify which bacterium is Gram positive and Gram negative respectively in the Answer sheet.

Soal olimpiade biologi SMA IBO Singapura selengkapnya dapat Anda download melalui link download di bawah ini. Terima kasih atas kunjungan Anda, semoga bermanfaat.

Soal Olimpiade Biologi SMA IBO Singapura Test Teori 1 download
Soal Olimpiade Biologi SMA IBO Singapura Test Teori 2 download
Jawaban Soal Olimpiade Biologi SMA IBO Singapura Test Teori download
Soal Olimpiade Biologi SMA IBO Singapura Test Eksperimen download
Jawaban Soal Olimpiade Biologi SMA IBO Singapura Test Eksperimen download

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