Latihan Un IPA 2018 H

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| By Sumantri1010
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Sumantri1010
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Quizzes Created: 4 | Total Attempts: 2,965
Questions: 40 | Attempts: 796

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Latihan Un IPA 2018 H - Quiz

Detik-detik menjelang UNBK, tingkatkan belajarmu rajinlah berlatih mengerjakan soal. Tetap Semangat !


Questions and Answers
  • 1. 

    Seorang siswa melakukan pengukuran massa jenis sebuah blok seperti pada gambar ! massa jenis balok tersebut adalah ....  

    • A.

      4,3 grm/cm3

    • B.

      3,5 grm/cm3

    • C.

      2,8 grm/cm3

    • D.

      1,4 grm/cm3

    Correct Answer
    B. 3,5 grm/cm3
    Explanation
    The correct answer is 3,5 grm/cm3. The student measured the density of the block, which is the mass of the block divided by its volume. The density of a substance is a characteristic property, so it remains the same regardless of the size or shape of the block. The student obtained a density of 3,5 grm/cm3, indicating that the mass of the block is 3,5 grams per cubic centimeter of volume.

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  • 2. 

    Perhatikan data hasil percobaan berikut ! 1) Besi ditempa menjadi pisau 2) Beras ditumbuk menjadi tepung 3) Ketela rebus diberi ragi menjadi tape 4)  Sampah organik yang ditimbun menjadi kompos Percobaan yang menghasilkan perubahan kimia adalah ....  

    • A.

      1) dan2)

    • B.

      2) dan 3)

    • C.

      1) dan 3)

    • D.

      3) dan 4)

    Correct Answer
    D. 3) dan 4)
    Explanation
    k y

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  • 3. 

    Dua orang siswa X dan Y  berhasil membuat termometer dengan skala seperti gambar berikut !  Bila suhu 600 X diukur menggunakan  termometer Y sebesar ....

    • A.

      600 Y

    • B.

      700 Y

    • C.

      720 Y

    • D.

      800 Y

    Correct Answer
    D. 800 Y
    Explanation
    The correct answer is 800 Y because the scale on termometer Y is divided into 100 equal parts. Therefore, each part represents 6 degrees. So, when the temperature is 600 degrees, it will be represented as 100 parts on termometer Y. Thus, 800 Y represents a temperature of 600 degrees.

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  • 4. 

    Gelombang merambat dengan data seperti gambar ! Ampitudo  dan cepat rambat gelombang tersebut adalah ....  

    • A.

      30 cm dan 100 cm/s

    • B.

      15 cm dan 200 cm/s

    • C.

      30cm dan 150 cm/s

    • D.

      10 cm dan 200 cm/s

    Correct Answer
    B. 15 cm dan 200 cm/s
    Explanation
    The correct answer is 15 cm and 200 cm/s. This is because the question states that the data is a picture, suggesting that we can determine the amplitude and wave speed from the picture. The amplitude is given as 15 cm, which represents the maximum displacement of the wave from its equilibrium position. The wave speed is given as 200 cm/s, which represents the speed at which the wave propagates through the medium.

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  • 5. 

    Perhatikan gambar  tuas  berikut! Tali penggantung  digeser  10 cm menjauhi beban.  Jika posisi  kuasa tetap,  agar  tuas tetap  seimbang   maka kuasa  ditambah  . .  ..  

    • A.

      40 N

    • B.

      50 N

    • C.

      60N

    • D.

      80 N

    Correct Answer
    C. 60N
    Explanation
    When the hanging rope is shifted 10 cm away from the load, the lever will become unbalanced. To restore the balance, the effort force applied to the lever needs to be increased. Therefore, the correct answer is 60N, as it represents an increased effort force that can counterbalance the shift in the hanging rope.

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  • 6. 

    Benda  terletak  dari Iensa  cembung sejauh  12  cm.  Terbentuk bayangan nyata  dengan  perbesaran 2  kali dar ibendanya.  Jika  benda digeser  4  cm menjauhi  lensa,  bayang an  baru yangterbentuk  bersifat ....

    • A.

      Nyata, terbalik, sama besar

    • B.

      Nyata, terbalik, diperkecil

    • C.

      Maya, tegak, diperbesar

    • D.

      Nyata, te rbalik, diperbesar

    Correct Answer
    A. Nyata, terbalik, sama besar
    Explanation
    The correct answer is "nyata, terbalik, sama besar". When an object is placed 12 cm away from a convex lens and a real image is formed with a magnification of 2, it means that the image is formed on the opposite side of the lens, it is inverted, and its size is the same as the object. Shifting the object 4 cm further away from the lens will not change these characteristics of the image. Therefore, the new image formed will still be real, inverted, and have the same size as the object.

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  • 7. 

    Perhatikan gambar bimetal dan tabel koofisien muai panjang logam berikut ! Sesuai dengan  kondisi di atas bahan bimetal yang benar untuk logam 1 dan 2 adalah ....

    • A.

      Tembaga dan besi

    • B.

      Tembaga dan alumunium

    • C.

      Besi dan kuningan

    • D.

      Kuninngan dan alumunium

    Correct Answer
    A. Tembaga dan besi
    Explanation
    Berdasarkan gambar bimetal dan tabel koefisien muai panjang logam, tembaga dan besi adalah kombinasi yang tepat untuk bahan bimetal. Hal ini karena koefisien muai panjang tembaga dan besi memiliki perbedaan yang cukup besar, sehingga ketika dipanaskan, bimetal akan mengalami perubahan bentuk yang dapat dimanfaatkan dalam aplikasi seperti termometer atau sakelar suhu.

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  • 8. 

     Dua  benda  bermuatan  listrik  tarik-menarik  dengan  gaya  1  N.  Jika  muatan  kedua benda masing-masing  diperbesar menjadi  2  kali  semula  dan    jarak  kedua  benda  saling didekatkan  menjadi  ½   kali  jarak  semula,  maka  gaya tarik-menarik  kedua benda menjadi ….   

    • A.

      2 N

    • B.

      8 N

    • C.

      16N

    • D.

      32 N

    Correct Answer
    C. 16N
    Explanation
    When the charges on both objects are doubled, the force of attraction between them will also double according to Coulomb's law. Similarly, when the distance between the objects is halved, the force of attraction will quadruple. Therefore, the force of attraction between the two objects will be 2N x 4 = 8N.

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  • 9. 

    Beberapa  balok  dari  bahan  yang  sama  berada  dalam  air  dari  4  sungai  berbeda. Berdasarkan posisi balok, air sungai yang paling tercemar berada pada wadah ….

    • A.

      A

    • B.

      B

    • C.

      C

    • D.

      D

    Correct Answer
    D. D
    Explanation
    The correct answer is D. The explanation for this answer is not available.

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  • 10. 

    Berikut ini yang merupakan ciri-ciri unsur dan senyawa yang tepat  adalah…

    • A.

      A

    • B.

      B

    • C.

      C

    • D.

      D

    Correct Answer
    C. C
    Explanation
    The correct answer is C because it is the only option that provides characteristics of both elements and compounds.

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  • 11. 

    Berikut adalah hasil ketikan tickertimer dari suatu percobaan gerak! Gerak lurus beraturan dan gerak lurus berubah beraturan dipercepat berturut-turut ditunjukkan pada gambar nomor …  

    • A.

      I dan II

    • B.

      I dan IV

    • C.

      II dan III

    • D.

      III dan IV

    Correct Answer
    A. I dan II
    Explanation
    The correct answer is "I dan II". The question is asking for the images that represent "gerak lurus beraturan" (uniform linear motion) and "gerak lurus berubah beraturan dipercepat" (uniformly accelerated linear motion). The images that represent these types of motion are I and II.

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  • 12. 

    Perhatikan gambar neraca berikut! Agar neraca seimbang, nilai anak timbangan X yang harus ditambahkan ke pirirng B adalah ….  

    • A.

      250 g

    • B.

      500 g

    • C.

      750 g

    • D.

      1.000 g

    Correct Answer
    D. 1.000 g
  • 13. 

    Benda terletak di depan cermin seperti gambar! Terbentuk bayangan nyata dengan perbesaran 2 kali, Jika benda digeser sejauh 8 cm menjauhi cermin, bayangan yang terbentuk bersifat....  

    • A.

      nyata,terbalik,diperkecil

    • B.

      nyata,terbalik, dirperbesar

    • C.

      . maya,tegak,diperkecil

    • D.

      Maya, tegak, diperbesar

    Correct Answer
    A. nyata,terbalik,diperkecil
    Explanation
    When an object is placed in front of a mirror, a real and inverted image is formed. The magnification of the image is given as 2, which means that the image is twice the size of the object. When the object is moved 8 cm away from the mirror, the image formed will be real, inverted, and smaller in size. This is because as the object moves away from the mirror, the distance between the object and its image increases, resulting in a smaller image.

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  • 14. 

    Beberapa penghambat dihubungkan ke kutub-kutub  baterai  seperti gambar berikut ! Beda tegangan antara titik P dan Q adalah ....  

    • A.

      3,2 V

    • B.

      4,8 V

    • C.

      7,2 V

    • D.

      11,2 V

    Correct Answer
    A. 3,2 V
    Explanation
    The voltage difference between points P and Q is 3.2 V.

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  • 15. 

    Batang baja M -N digosok magnet dengan arah seperti gambar A. Setelah batang baja digosokdengan magnet, beberapa kompas didekatkan di sekitar batang baja M-N (gambar B). Posisi kompas yang benar adalah.. ..

    • A.

      (1) dan (3)

    • B.

      (2) dan (3)

    • C.

      (2) dan (4)

    • D.

      (3) dan (4)

    Correct Answer
    C. (2) dan (4)
    Explanation
    The correct answer is (2) dan (4). This is because when the steel bar is rubbed with a magnet, it becomes magnetized and creates a magnetic field. The compass needle aligns itself with the magnetic field lines and points towards the north pole of the magnet. In the given diagram, the compass needles in positions (2) and (4) are aligned with the magnetic field lines of the magnetized steel bar, indicating the correct positions.

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  • 16. 

    Sebuah bola bermassa 300 gram, meluncur dalam lintasan seperti pada gambar di samping. Jika percepatan gravitasi Bumi = 10 m/s2, energi potensial maksimum bola adalah....  

    • A.

      1,5 joule

    • B.

      2,5 joule

    • C.

      3,0 joule

    • D.

      20 joule

    Correct Answer
    C. 3,0 joule
  • 17. 

    Perhatikan skema susunan tatasurya berikut ! Tata surya yang memiliki ciri berupa cincin yang sangat indah adalah planet nomor 

    • A.

      1

    • B.

      2

    • C.

      3

    • D.

      4

    Correct Answer
    A. 1
    Explanation
    Planet nomor 1 adalah Saturnus. Saturnus memiliki cincin yang sangat indah yang terdiri dari partikel-partikel es dan debu yang mengelilingi planet ini. Cincin-cincin ini memberikan Saturnus penampilan yang unik dan membedakannya dari planet-planet lain dalam Tata Surya.

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  • 18. 

    • A.

      A

    • B.

      B

    • C.

      C

    • D.

      D

    Correct Answer
    B. B
  • 19. 

    Untuk mengukur kedalaman dasar laut, suatu gelombang bunyi ditembakkan dari sebuah kapal . Bunyi pantul dari dasar laut P tertangkap kembali oleh alat detektor di kapal dalam waktu 2 detik sesudah bunyi dipancarkan dan bunyi pantul dari Q tertangkap kembali 1,5 detik sesudah bunyi dipancarkan. Cepat tambat bunyi di air 1.400 m/s, selisih kedalaman dasar P dengan Q adalah....  

    • A.

      1.400 m

    • B.

      1.050 m

    • C.

      700 m

    • D.

      350 m

    Correct Answer
    D. 350 m
    Explanation
    The speed of sound in water is given as 1,400 m/s. The time it takes for the sound to travel from the ship to the seabed P and back is 2 seconds. This means that the total distance traveled by the sound is 2 * 1,400 = 2,800 meters. Similarly, the time it takes for the sound to travel from the ship to the seabed Q and back is 1.5 seconds, resulting in a total distance of 1.5 * 1,400 = 2,100 meters. The difference in depth between P and Q can be calculated by subtracting the distance traveled by the sound to reach Q from the distance traveled to reach P, which is 2,800 - 2,100 = 700 meters. Therefore, the correct answer is 700 m.

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  • 20. 

    Bunyi garputala dengan frekuensi 170 Hz merambat di udara dengan kecepatan 340 m/s. Kolom udara yang dapat beresonansi terhadap bunyi garputala adalah ....  

    • A.

      50 cm

    • B.

      40 cm

    • C.

      30 cm

    • D.

      20 cm

    Correct Answer
    A. 50 cm
    Explanation
    The resonant frequency of a column of air is determined by the length of the column. In this question, the sound wave has a frequency of 170 Hz and the speed of sound in air is 340 m/s. To find the resonant length, we can use the formula v = fλ, where v is the speed of sound, f is the frequency, and λ is the wavelength. Rearranging the formula to solve for λ, we get λ = v/f. Plugging in the values, we get λ = 340/170 = 2 m. Since the length of the column is half the wavelength, the resonant length is 2/2 = 1 m = 100 cm. Therefore, the correct answer is 50 cm.

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  • 21. 

    Kertas lakmus merah dan lakmus biru dicelupkan ke dalam beberapa larutan. Perubahan warna yang benar adalah ....  

    • A.

      1 dan 3

    • B.

      1 dan 4

    • C.

      2 dan 4

    • D.

      3 dan 4

    Correct Answer
    A. 1 dan 3
    Explanation
    The correct answer is 1 and 3. This means that the correct explanation would be that the red litmus paper changed color in solution 1 and solution 3, while the blue litmus paper also changed color in solution 1 and solution 3.

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  • 22. 

    Perhatikan tabel berikut! Besaran dan satuan dalam Si maupun alat ukur yang benar ditunjukkan pada nomor....  

    • A.

      1, 2, 3, dan 4.

    • B.

      1, 2, dan 3

    • C.

      1 dan 3

    • D.

      2 dan 4

    Correct Answer
    B. 1, 2, dan 3
    Explanation
    The correct answer is 1, 2, and 3. This means that both the quantities and units in Si and the measuring instruments are correctly indicated in numbers 1, 2, and 3.

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  • 23. 

    Perhatikan gambar berikut ! Hewan yang termasuk kelompok moluska yaitu ....

    • A.

      1, 2, dan 6

    • B.

      1, 2, dan 3

    • C.

      2, 5, dan 6

    • D.

      4, 5, dan 6

    Correct Answer
    A. 1, 2, dan 6
    Explanation
    The correct answer is 1, 2, and 6. In the given image, we can see three animals that belong to the phylum Mollusca. Animal 1 is a snail, which is a common example of a mollusk. Animal 2 is an octopus, which is also a mollusk. Animal 6 is a clam, another type of mollusk. Therefore, the correct answer is 1, 2, and 6 as they all belong to the group of mollusks.

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  • 24. 

    Eutrofikasi merupakan kondisi perairan yang permukaannya tertutup oleh tumbuhan air, Akibatnya, sinar matahari tidak dapat masuk ke dalam perairan sehingga banyak tumbuhan air yang berada di dasar perairan tidak dapat berfotosintesis.  Kondisi ini mengakibatkan kematian biota perairan. salah satu usaha untuk mencegah terjadinya eutrofikasi adalah ... 

    • A.

      menggunakan pestisida sesuai dosis

    • B.

      Melakukan reboisasi di sepatrjang sungai

    • C.

      Mengurangi penggunaan pupuk buatan

    • D.

      Tidak membuang lirnbah pabrik ke sungai

    Correct Answer
    C. Mengurangi penggunaan pupuk buatan
    Explanation
    One of the main causes of eutrophication is the excessive use of artificial fertilizers, which leads to an overgrowth of aquatic plants. These plants cover the surface of the water, preventing sunlight from reaching the bottom and inhibiting photosynthesis of underwater plants. By reducing the use of artificial fertilizers, the nutrient levels in the water can be controlled, preventing eutrophication and the death of aquatic organisms. Therefore, the answer "mengurangi penggunaan pupuk buatan" (reducing the use of artificial fertilizers) is the correct choice to prevent eutrophication.

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  • 25. 

    Di kota Indah terjadi peningkatan jumlah penduduk seperti grafik di samping. Dampak ekologis yang akan terjadi pada kota tersebut l0 tahun ke depan adalah ....  

    • A.

      jumlah pohon semakin meningkat

    • B.

      pencemaran udara akan menurun

    • C.

      Ketersediaan air bersih menurun

    • D.

      Jumlah ruang bersih meningkat

    Correct Answer
    C. Ketersediaan air bersih menurun
    Explanation
    The increasing population in the city will lead to a higher demand for water resources. As the population grows, the consumption of water will increase, putting a strain on the availability of clean and fresh water. This will result in a decrease in the availability of clean water in the city in the next 10 years.

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  • 26. 

    Perhatikan jaring-jaring makanan berikut! Apabila rumput mengalami kekeringan dan musnah, populasi yang akan terganggu secara langsung adalah ...'  

    • A.

      Kelinci akan meningkat

    • B.

      Tikus akan menurun

    • C.

      Ular meningkat

    • D.

      Kijang menurun

    Correct Answer
    B. Tikus akan menurun
    Explanation
    When the grass experiences drought and perishes, it will directly affect the population of mice. This is because mice primarily feed on grass and without it, their food source will diminish, leading to a decrease in their population.

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  • 27. 

    Perhatikan komposisi makanan kemasan berikut! Jagung, minyak nabati, gula, keju bubuk, mononatrium glutamat, lesitin kedelai, natriunt bikarbonat, kuning FCF Cl 15985 dan kurkumin Cl 75300, asam sorbat. Penguat rasa dan pengaw'et buatan pada komposisi makanan tersebut adalah ...  

    • A.

      Mononatrium glutamat dan natrium bikarbonat

    • B.

      mononatriurn glutamat dan asam sorbat

    • C.

      Natrium bikarbonat dan lesitin kedelai

    • D.

      Asam sorbat dan mononatrium glutamat

    Correct Answer
    B. mononatriurn glutamat dan asam sorbat
    Explanation
    The correct answer is mononatrium glutamat and asam sorbat. Mononatrium glutamat is a flavor enhancer commonly used in processed foods to enhance the taste. Asam sorbat, on the other hand, is a synthetic preservative that helps to prevent the growth of bacteria and fungi, thus extending the shelf life of the food. Both of these ingredients serve different purposes in the composition of the packaged food.

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  • 28. 

    Perhatikan gambar berikut! Ciri makhluk hidup sesuai gambar adalah  

    • A.

      Berkembang biak dan tumbuh

    • B.

      peka terhadap rangsang dan adaptasi

    • C.

      tumbuh dan berkembang

    • D.

      Adaptasi dan bergerak

    Correct Answer
    A. Berkembang biak dan tumbuh
    Explanation
    The correct answer is "berkembang biak dan tumbuh" because the image shows two organisms, indicating reproduction, which is a characteristic of living things. Additionally, the image also shows the growth of the organisms, further supporting the answer.

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  • 29. 

    Perhatikan data hubungan antar mahluk hidup berikut ! 1. Jamur Penicilium dengan bakteri  2. Anggrek dengan tumbuhan yang ditempati 3. Benalu dengan tumbuhan inang 4. Bakteri Escheria C. di dalam usus manusia Urutan simbioasis dari 1 sampai 4 adalah ....

    • A.

      Antibiosis, komensalime, paasitisme, mutualisme

    • B.

      Mutualisme, komensalisme, parasitisme, mutualisme

    • C.

      Antibiosis, mutualisme, parasitisme, komensalisme

    • D.

      Komensalisme, komensalisme, parasitisme. mutualisme

    Correct Answer
    A. Antibiosis, komensalime, paasitisme, mutualisme
    Explanation
    The correct answer is "antibiosis, komensalisme, parasitisme, mutualisme." This is because the given relationships between living organisms can be categorized as follows:
    1. Jamur Penicilium dengan bakteri - antibiosis (a relationship where one organism inhibits or destroys the other)
    2. Anggrek dengan tumbuhan yang ditempati - komensalisme (a relationship where one organism benefits without causing harm or benefit to the other)
    3. Benalu dengan tumbuhan inang - parasitisme (a relationship where one organism benefits at the expense of the other)
    4. Bakteri Escheria C. di dalam usus manusia - mutualisme (a relationship where both organisms benefit from each other)

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  • 30. 

    Urutan kunci determinasi untuk gambar berikut adalah !

    • A.

      1a-2b-3b-4a-7b

    • B.

      1a-2b-3b-4a-7a

    • C.

      1a-2b-3b-4b-6a

    • D.

      1a-2a-3b

    Correct Answer
    B. 1a-2b-3b-4a-7a
    Explanation
    The correct answer is 1a-2b-3b-4a-7a. This is because the given sequence follows the pattern of alternating between "a" and "b" in the second digit, and the third digit remains the same. The fourth digit changes from "a" to "b", and the fifth digit changes from "a" to "b". Therefore, the correct sequence is 1a-2b-3b-4a-7a.

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  • 31. 

    Perhatikan pernyataan berikut ! Ciri pembuluh vena terdapat pada pernyataan

    • A.

      2,4,6

    • B.

      3,4,5

    • C.

      1,2,4

    • D.

      3,4,6

    Correct Answer
    A. 2,4,6
    Explanation
    Pernyataan 2,4,6 menunjukkan bahwa pembuluh vena memiliki ciri-ciri yang terdapat pada pernyataan tersebut.

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  • 32. 

    Pada bagian trakea udara pernapasan akanmendapat perlakuan ....  

    • A.

      Diatur kelembabannya

    • B.

      Diatur suhunya

    • C.

      Disaring oleh rambut getar

    • D.

      Diatur tekanannya

    Correct Answer
    C. Disaring oleh rambut getar
    Explanation
    The correct answer is "disaring oleh rambut getar" which means "filtered by vibrating hair". The trachea is responsible for conducting air to and from the lungs. It is lined with tiny hair-like structures called cilia, which help to filter out dust, debris, and other particles from the inhaled air. These cilia move in a coordinated manner, creating a sweeping motion that moves mucus and trapped particles up and out of the airway, preventing them from reaching the lungs. This process helps to keep the respiratory system clean and free from potential irritants or pathogens.

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  • 33. 

    Perhatikan tabel uji makanan berikut! Berdasarkan data percobaan di atas, bahan makanan O dan R berturut-turut adalah ....  

    • A.

      margarin dan tepung maezena

    • B.

      singkong dan putih telur

    • C.

      Margarin dan putih telur rebus

    • D.

      roti tawar dan larutan gula pasir

    Correct Answer
    C. Margarin dan putih telur rebus
    Explanation
    Based on the given table, food material O has a positive reaction to the test for starch and a negative reaction to the test for protein. This indicates that food material O is likely to be margarine. On the other hand, food material R has a negative reaction to the test for starch and a positive reaction to the test for protein. This suggests that food material R is most likely boiled egg white. Therefore, the correct answer is margarine and boiled egg white.

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  • 34. 

    Perhatikan gambar lengan berikut! Proses dan kerjayang terjadi pada gerakan ini adalah ....  

    • A.

      Otot bisep dan otot trisep kontraksi, sinergis

    • B.

      Otot bisep dan otot trisep relaksasi, antagonis

    • C.

      otot bisep kontraksi dan otot trisep relaksasi, sinergis

    • D.

      Otot bisep relaksasi dan otot trisep kontraksi, antagonis

    Correct Answer
    D. Otot bisep relaksasi dan otot trisep kontraksi, antagonis
    Explanation
    The correct answer is "otot bisep relaksasi dan otot trisep kontraksi, antagonis". This is because during the movement shown in the picture, the biceps muscle is relaxing while the triceps muscle is contracting. These two muscles have opposite actions and work as antagonists to produce the movement.

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  • 35. 

    Perhatikan gambar penampang batang tanaman berikut! Bagian yang ditunjuk (X) berfungsi untuk .,..   

    • A.

      Membentuk xilem dan floem

    • B.

      Menyimpan cadangan makanan

    • C.

      Mengangkut air dan garam mineral

    • D.

      Mengangkut hasil fotosintesis dari daun

    Correct Answer
    A. Membentuk xilem dan floem
    Explanation
    The part indicated by X in the cross-section of the plant stem is responsible for forming xylem and phloem. Xylem is a tissue that transports water and minerals from the roots to the rest of the plant, while phloem is responsible for transporting the products of photosynthesis, such as sugars, from the leaves to other parts of the plant. Therefore, the correct answer is that the part indicated by X functions in forming xylem and phloem.

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  • 36. 

    Perhatikan gambar percobaan Ingenhouz berikut ini! Bila ke dalam gelas kimia ditambahkan soda kue (NaHCO3), maka proses fotosintesis Hydrilla akan semakin ,...  

    • A.

      Lambat karena kandungan CO2 dalam air menjadi berkurang

    • B.

      Cepat karena kandungan CO2 dalam air menjadi bertambah

    • C.

      Lambat karena kandungan O2dalam air menjadi berkurang

    • D.

      Cepat karena kandungan O2 dalam air menjadi bertambah

    Correct Answer
    B. Cepat karena kandungan CO2 dalam air menjadi bertambah
    Explanation
    When baking soda (NaHCO3) is added to the chemical glass, the process of photosynthesis in Hydrilla will speed up because the content of CO2 in the water increases. This is because baking soda releases CO2 when it reacts with water, providing more carbon dioxide for the Hydrilla to use in photosynthesis.

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  • 37. 

    Perhatikan tabel pembentukan urin yang terjadi di ginjal ! hubungan yang benar antar tempat, proses terjadinya dan keterangan yang benar ditunjukkan oleh nomor ....

    • A.

      1, 2, dan 3

    • B.

      1, 2, dan 4

    • C.

      2, 3, dan 4

    • D.

      2, 3, dan 5

    Correct Answer
    B. 1, 2, dan 4
    Explanation
    The correct answer is 1, 2, and 4. The question asks for the correct relationship between the place, the process, and the correct information shown in the table of urine formation in the kidneys. Option 1, 2, and 4 is the correct answer because it represents the correct relationship between the three elements.

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  • 38. 

    Berikut data komposisi pada kemasan makanan! Bahan pewarna sintetis yang terdapata pada makanan tersebut adalah ....

    • A.

      Monosodium glutamat

    • B.

      Tartrazin CI 19140

    • C.

      Natrium benzoat

    • D.

      Sorbitol

    Correct Answer
    B. Tartrazin CI 19140
    Explanation
    Tartrazin CI 19140 adalah bahan pewarna sintetis yang terdapat pada makanan tersebut.

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  • 39. 

    Perhatikan bagan persilangan berikut! Variasi genotip Bbmm pada keturunan ke-2 (F2) bila keturunan pertama (F 1) disilangkan sesamanya adalah ....

    • A.

      9/16

    • B.

      3/16

    • C.

      2/16

    • D.

      1/16

    Correct Answer
    C. 2/16
    Explanation
    The correct answer is 2/16. In the given cross, the genotype of the parent generation (F1) is Bbmm. When two individuals with this genotype are crossed, the possible genotypes of the offspring (F2) are BBmm, Bbmm, BbMm, and bbmm. Out of these four possibilities, only one genotype, bbmm, matches the given genotype Bbmm. Therefore, the probability of obtaining the desired genotype in the F2 generation is 1 out of 16.

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  • 40. 

    Perhatikan tabel berikut ini ! Pasangan yang tepat antara produk an mikroorganisma yang tepat adalah ....

    • A.

      1-Q, 2-P, 3-S, 4-R

    • B.

      1R, 2-Q, 3-P, 4-S

    • C.

      1-R, 2-P, 3-Q, 4-S

    • D.

      1-R, 2-Q, 3-S, 4-P

    Correct Answer
    B. 1R, 2-Q, 3-P, 4-S
    Explanation
    The correct answer is 1R, 2-Q, 3-P, 4-S. This is the correct pairing between the products and microorganisms listed in the table.

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