Biologi Kelas 7

The correct answer is "sel". In biology, the smallest unit of a living organism is called a cell. Cells are the basic building blocks of life and perform various functions within an organism. They are responsible for carrying out essential processes such as metabolism, growth, and reproduction. Without cells, living organisms would not be able to function properly. Therefore, "sel" is the correct answer as it accurately represents the smallest part of a living organism.

The correct answer is "Seorang anak di dalam kelas". This is because the other options are examples of groups or collections of individuals, while this option refers to a single individual, specifically a child inside a classroom.

The correct answer is "jaringan". In Indonesian, the word "kumpulan" means a collection or group. Therefore, a "kumpulan sel" refers to a group of cells. The options given are "sel" (cells), "jaringan" (tissues), "organ" (organs), and "organisme" (organisms). Out of these options, "jaringan" is the most fitting because it means tissues, which are made up of a collection of cells working together to perform a specific function.

The correct answer is "sel-jaringan-organ-sistem organ-organisme". This is the correct order of the hierarchical system of life, starting from the smallest unit, which is the cell, followed by tissues (jaringan), organs, organ systems, and finally, organisms.

The correct answer is "Sistem Pencernaan" because the question asks for an example of an organ system, and the other options (Hati, Lambung, Paru-paru) are individual organs within the digestive system. The digestive system is responsible for breaking down food and absorbing nutrients, and it consists of multiple organs working together to perform this function. Therefore, "Sistem Pencernaan" is the correct answer as it represents a system of organs working together.

The correct answer is "produsen" because producers occupy the lowest position in the food pyramid. Producers, such as plants, are the primary source of food and energy in an ecosystem. They convert sunlight into usable energy through photosynthesis, which is then consumed by other organisms higher up in the food chain. Without producers, there would be no energy or food available for other organisms to survive.

Berdasarkan data yang diberikan, komponen biotik sawah adalah padi (nomor 4) dan ulat (nomor 5). Padi adalah tanaman yang hidup di sawah, sedangkan ulat merupakan salah satu jenis hewan yang dapat ditemukan di sawah.

CFC biasanya berasal dari lemari es karena CFC (Chlorofluorocarbon) adalah bahan kimia yang digunakan sebagai pendingin dalam lemari es dan AC. CFC dapat menguap ke atmosfer dan merusak lapisan ozon di atmosfer. Oleh karena itu, penggunaan CFC dalam lemari es dan AC telah dilarang untuk mengurangi kerusakan lapisan ozon.

The correct answer is "dinding sel" (cell wall). The cell wall is a rigid structure found in plant cells that provides support and protection to the cell. Animal cells do not have a cell wall, which is the main difference between plant and animal cells.

The correct answer is "kebakaran hutan." Kebakaran hutan is not a cause of air pollution, but rather a consequence of it. Forest fires release large amounts of smoke and pollutants into the air, contributing to air pollution. The other options listed, such as pesticides, detergent residue, and oil waste disposal, are all known causes of air pollution.