Game Persiapan Un Ipa Smp - Biologi

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1. Which components are considered biotic in the observation of a group of students in a pond?

Explanation

In the given data, tanaman eceng gondok (water hyacinth), ikan mas (goldfish), and lele (catfish) are all living organisms, which are classified as biotic components in the observation.

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Game Persiapan Un IPA Smp - Biologi - Quiz

Prepare for the Indonesian National Biology Exam (UN IPA SMP) with focused content on essential biological concepts. This preparation aids in mastering key topics crucial for SMP students... see moreaiming to excel in their upcoming exams. see less

2. Which of the following are characteristics of dicot plants?

Explanation

Classification of living organisms is based on similarities and differences in characteristics. Dicot plants have characteristics such as two seed cotyledons, reticulate leaf veins, and double fertilization. These characteristics distinguish them from monocot plants.

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3. 36. Persilangan antara tanaman ercis berbatang tinggi dengan tanaman ercis berbatang pendek menghasilkan tanamana ercis (F1) berbatang tinggi. Apabila F1 dibiarkan menyerbuk sendiri, berapa persenkah F2 yang berbatang tinggi heterozigotik?

Explanation

P1 TT X tt (batang tinggi) (batang pendek) gamet: T t, F1 TT (batang tinggi) Jika F1 menyerbuk sendiri berarti F1 berkedudukan menjadi P2 P1 Tt X Tt (batang tinggi) (batang tinggi) gamet: T, t T, t F2 Genotip dan fenotip: 1. TT (tinggi homozigotik) 2. Tt (tinggi heterozigotik) 3. Tt (tinggi heterozigotik) 4. tt (pendek homozigtik) Jadi dari hasil persilangan diperoleh 2 bergenotip Tt atau tinggi heterozigotik 2/4 X 100% = 50%.

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4. Kemajuan bioteknologi mampu mengubah peradaban dunia sehingga menyejahterakan kehidupan manusia. Namun sesuai dengan perkembangannya pemanfaatan bioteknologi telah berdampak pada kualitas lingkungan dimana manusia hidup didalamnya. Berikut contoh dampak negatif terhadap lingkungan dari pemanfatan bioteknologi:

Explanation

Berdasar pernyataan soal di atas dapat dikatakan bahwa dengan serangga mutan hasil rekayasa genetik telah menyebabkan serangga yang memiliki ketahanan terhadap insektisida sehingga berakibat bahwa boomingnya populasi serangga. Dampak dari meningkatnya jumlah populasi serangga berakibat pada menurunnya budidaya pangan. Hal inipun dapat berdampak pada tidak menunrunnya kualitas keseimbangan ekosistem.

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5. What are the natural chemicals added to the food product listed in the question: sakarin, karamel, erythrosine, NaCl, susu skim nabati, NaHCO3?

Explanation

Sakarin, karamel, and NaCl are not natural chemicals added to the food product. Karamel is a natural sweetener/colorant, NaCl is table salt, and the other options contain synthetic chemicals.

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6. 39. Rokok, minuman keras, serta alkohol yang mengandung etil etanol, inhalen merupakan kelompok zat adiktif yang mengganggu kerja sistem saraf pusat. Berdasar kandungan zat tersebut maka efek yang diakibatkan bagi pengguna adalah....

Explanation

Zat adiktif adalah obat serta bahan-bahan aktif yang apabila dikonsumsi oleh organisme hidup, maka dapat menyebabkan kerja biologi serta menimbulkan ketergantungan atau adiksi yang sulit dihentikan dan berefek ingin menggunakannya secara terus-menerus. Jika dihentikan dapat memberi efek lelah luar biasa atau rasa sakit luar biasa. Zat yang bukan tergolong narkotika dan psikotropika tetapi menimbulkan ketagihan antara lain kopi, rokok, minuman keras, dll.

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Which components are considered biotic in the observation of a group...
Which of the following are characteristics of dicot plants?
36. Persilangan antara tanaman ercis berbatang tinggi dengan tanaman...
Kemajuan bioteknologi mampu mengubah peradaban dunia sehingga...
What are the natural chemicals added to the food product listed in the...
39. Rokok, minuman keras, serta alkohol yang mengandung etil etanol,...
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