Latihan Online Soal Biologi Bab Virus

The given answer states that viruses cannot be classified as living organisms because they can be crystallized. This is a valid explanation because one of the characteristics of living organisms is the ability to undergo cellular processes such as growth, reproduction, and metabolism. Since viruses lack these characteristics and can be crystallized, they are considered non-living entities.

The correct answer is "Penyebab penyakit flu burung." This is because Avian Influenza A (H5N1) is commonly known as bird flu and it is caused by the H5N1 strain of the influenza A virus. It primarily affects birds, particularly poultry, but can also infect humans and cause severe respiratory illness. The virus is transmitted through direct contact with infected birds or their droppings, and in rare cases, it can be transmitted from person to person.

AIDS can be transmitted through sexual contact, as the virus that causes AIDS, HIV, can be present in bodily fluids such as blood, semen, vaginal fluids, and breast milk. Therefore, engaging in sexual activity with an infected person can lead to the transmission of the disease.

Virologi adalah cabang ilmu biologi yang mempelajari tentang virus. Dalam virologi, para ilmuwan mempelajari struktur, sifat, dan siklus hidup virus, serta cara-cara virus berinteraksi dengan inangnya. Mereka juga mempelajari bagaimana virus menyebabkan penyakit dan cara-cara untuk mencegah dan mengobati infeksi virus. Dengan mempelajari virologi, kita dapat memahami lebih dalam tentang virus dan mengembangkan strategi-strategi untuk mengatasi penyakit yang disebabkan oleh virus.

During the lysogenic stage, the virus remains inside the host cell and integrates its genetic material into the host's DNA. This allows the virus to replicate along with the host's DNA without causing any immediate harm or triggering the immune system's response. As a result, the body does not feel sick because the virus is not detected as a foreign invader by the immune system.

The correct answer is "Kapsid." A virus is composed of a protein coat called a capsid, which protects the genetic material of the virus. The capsid is responsible for the shape and structure of the virus. It plays a crucial role in protecting the viral genome and facilitating its entry into host cells.

Bakteriofag adalah virus yang menginfeksi bakteri.

A bakteriofag is a type of virus that specifically infects and feeds on bacteria. It attaches to the surface of the bacteria and injects its genetic material into the bacterial cell. The genetic material then takes over the cell's machinery, forcing it to produce more copies of the virus. Eventually, the bacterial cell bursts open, releasing the newly formed viruses to infect other bacteria. Therefore, a bakteriofag can be considered a virus that eats bacteria.

The given statement states that the virus will destroy the host cell after reproduction. This process is known as the lytic cycle or the lytic infection. In the lytic cycle, the virus attaches to the host cell, injects its genetic material, takes over the cell's machinery to produce new viral components, assembles these components into new viruses, and finally, lyses or destroys the host cell to release the newly formed viruses. This is different from the lysogenic cycle, where the viral DNA integrates into the host cell's genome and remains dormant until triggered to enter the lytic cycle.

Viruses are not considered as cells because they lack cytoplasm and cell membrane. They are extremely small in size and can be crystallized. Additionally, viruses can only survive as true parasites, meaning they require a host cell to replicate and carry out their life cycle.

During the assembly stage, the separate parts of the capsid, such as the head, tail, and tail fibers, come together to form a complete capsid structure. This process is known as "perakitan" or assembly.

The correct answer is "Influenza, cacar, rabies, polio." This is because the question asks which diseases are caused by viruses, and these four diseases are all caused by viral infections.

The correct answer is 20 – 300 milimikron. This is because viruses are extremely small in size, typically ranging from 20 to 300 milimikron. Milimikron is a unit of measurement used to describe the size of particles, and in this case, it refers to the size range of viruses.

After the cell wall is hydrolyzed (damaged), the phage DNA enters the bacterial cell. This process is known as the penetration phase.

Enzim yang dihasilkan oleh virus yang dapat memecahkan dinding sel bakteri disebut lisozim. Lisozim bekerja dengan menghancurkan peptidoglikan dalam dinding sel bakteri, yang mengakibatkan lisis atau pecahnya sel bakteri. Hal ini memungkinkan virus untuk melepaskan diri dan melanjutkan siklus replikasinya.

During the process of adsorption, the tail of the virus attaches itself to the wall of the bacteria. This is an important step in the viral life cycle as it allows the virus to gain entry into the bacterial cell and initiate infection. The adsorption process is necessary for the subsequent steps of the viral replication, such as injection of viral genetic material into the host cell and synthesis of new viral particles. Therefore, the correct answer is adsorbsi.

Ebola is the correct answer because it is a virus that specifically affects humans and primates, including monkeys and apes. It causes severe symptoms such as internal and external bleeding, fever, and organ failure. The Ebola virus is transmitted through direct contact with infected bodily fluids and has caused several outbreaks in Africa, with high mortality rates.

When a DNA virus enters a bacterial cell, it does so through the process of injection. This means that the virus injects its genetic material into the bacterial cell, bypassing the need for the virus to enter the cell itself. This is a common method used by bacteriophages, which are viruses that specifically infect bacteria. Once the viral DNA is injected into the bacterial cell, it can then hijack the host cell's machinery to replicate and produce more viruses.

Paramyxovirus is the correct answer because campak, which is the Indonesian term for measles, is caused by this type of virus. Measles is a highly contagious viral infection that primarily affects children and is characterized by a red rash, high fever, cough, runny nose, and red, watery eyes. Paramyxovirus is a family of viruses that includes the measles virus, making it the most appropriate choice for the cause of campak.

The correct answer is "Tipe A" because the passage states that bird flu is caused by a virus, and the types of influenza viruses that cause bird flu are type A. Type B and C are not mentioned in the passage as causes of bird flu. Therefore, the correct answer is type A.

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The correct answer is "Menanjankan diri ke bakteri." In bacteriophages, the tail fibers are extensions of the tail that function to attach and inject the genetic material of the virus into the bacterial host. They help the bacteriophage to recognize and bind to specific receptors on the surface of the bacteria, allowing for the infection process to occur.

The correct answer is "Fase replika dalam litik". This is because during the lytic cycle of viral infection, the virus takes over the host cell's machinery to replicate its own DNA. This phase is known as the replication phase, where the viral DNA is synthesized and multiplied within the host cell.

Martinus Beijerinck is the correct answer because he is known for his work on the discovery of viruses. The statement in the question about the scientist concluding that the attacking particles are very small and can only live on the organisms they attack aligns with Beijerinck's findings. He is credited with developing the concept of "virus" and his research laid the foundation for the field of virology. Although the question does not explicitly mention viruses, the clues provided about the size and behavior of the particles point to Beijerinck's work.

The given statement suggests that viruses only have RNA and DNA. However, this is incorrect. Viruses can have either RNA or DNA, but not both. Some viruses have RNA as their genetic material, while others have DNA. Therefore, the statement that viruses only have RNA and DNA is not true.

The correct answer is DNA. Viruses have genetic material in the form of either DNA or RNA. In this case, the question is asking about the nucleic acid that is surrounded by a capsid. The capsid is the protein coat that protects the viral genetic material. Since the question is asking specifically about the nucleic acid, the correct answer is DNA.

The correct answer is "Virus influenza." Influenza virus is an example of a naked nucleocapsid, meaning it lacks an envelope or outer membrane. This is in contrast to viruses like adenovirus, wart virus, and some others that have an envelope surrounding their nucleocapsid. The term "naked" refers to the absence of this envelope, making influenza virus a suitable example for this category.