Câu hỏi:
19/08/2021 7,078Read the following passage and mark the letter A, B, C or D on you answer sheet to indicate the correct answer to each of the questions.
The term 'virus is derived from the Latin word for poison. or slime. It was originally applied to the noxious stench emanating from swamps that was thought to cause a variety of diseases in the centuries before microbes were discovered and specifically linked to illness. But it was not until almost the end of the nineteenth century that a true virus was proven to be the cause of a disease.
The nature of viruses made them impossible to detect for many years even after bacteria had been discovered and studied. Not only are viruses too small to be seen with a light microscope, they also cannot be detected through their biological activity, except as it occurs in conjunction with other organisms. In fact, viruses show no traces of biological activity by themselves. Unlike bacteria, they are not living agents in the strictest sense Viruses are very simple pieces of organic material composed only of nucleic acid, either DNA or RNA, enclosed in a coat of protein made up of simple structural units (Some viruses also contain carbohydrates and lipids.) They are parasites, requiring human, animal, or plant cells to live. The virus replicates by attaching to a cell and injecting its nucleic acid.' once inside the cell, the DNA or RNA that contains the virus' genetic information takes over the cell's biological machinery, and the cell begins to manufacture viral proteins rather than its own
All of the following may be components of a virus EXCEPT
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Bộ đề thi Tiếng anh THPT Quốc gia năm 2022 có lời giải (30 đề) !!
Sách mới 2k7: Tổng ôn Toán, Lí, Hóa, Văn, Sử, Địa…. kỳ thi tốt nghiệp THPT Quốc gia 2025, đánh giá năng lực (chỉ từ 110k).
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Trả lời:
Giải bởi Vietjack
Kiến thức đọc hiểu:
Tất cả những điều sau đây có thể là thành phần của vi-rút NGOẠI TRỪ
- tế bào thực vật B. cacbohydrat C. một lớp ngoài của protein D. ARN
Dẫn chứng: Viruses are very simple pieces of organic material composed only of nucleic acid, either DNA or RNA, enclosed in a coat of protein made up of simple structural units (Some viruses also contain carbohydrates and lipids.)
Không giống như vi khuẩn, chúng không phải là tác nhân sống, theo nghĩa chặt chẽ nhất, vi rút là những mảnh vật chất hữu cơ rất đơn giản chỉ bao gồm axit nucleic, DNA hoặc RNA, được bao bọc trong một lớp ngoài protein được tạo thành từ các đơn vị cấu trúc đơn giản. (Một số vi rút cũng chưa carbohydrate và lipid.)
Chọn đáp án A
Nhà sách VIETJACK:
CÂU HỎI HOT CÙNG CHỦ ĐỀ
Câu 1:
Read the following passage and mark the letter A, B, C or D on you answer sheet to indicate the correct answer to each of the questions.
The term 'virus is derived from the Latin word for poison. or slime. It was originally applied to the noxious stench emanating from swamps that was thought to cause a variety of diseases in the centuries before microbes were discovered and specifically linked to illness. But it was not until almost the end of the nineteenth century that a true virus was proven to be the cause of a disease.
The nature of viruses made them impossible to detect for many years even after bacteria had been discovered and studied. Not only are viruses too small to be seen with a light microscope, they also cannot be detected through their biological activity, except as it occurs in conjunction with other organisms. In fact, viruses show no traces of biological activity by themselves. Unlike bacteria, they are not living agents in the strictest sense Viruses are very simple pieces of organic material composed only of nucleic acid, either DNA or RNA, enclosed in a coat of protein made up of simple structural units (Some viruses also contain carbohydrates and lipids.) They are parasites, requiring human, animal, or plant cells to live. The virus replicates by attaching to a cell and injecting its nucleic acid.' once inside the cell, the DNA or RNA that contains the virus' genetic information takes over the cell's biological machinery, and the cell begins to manufacture viral proteins rather than its own
The author implies that bacteria were investigated earlier than virus cause because ________.
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19/08/2021
11,340
Câu 2:
Mark the letter A, B, C, or D on your answer sheer to indicate the underlined part that needs correction in each of the following questions
Physics are one of the core subjects in natural sciences.
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19/08/2021
6,709
Câu 4:
Read the following passage and mark the letter A, B, C or D on your answer sheet to choose the word or phrase that best fits each other numbered blanks.
One of the most wondrous and iconic animals to walk the Earth, Bengal tigers, (25) _________ are majestic and rare. They're also one of the biggest cat species in the world. On average, Bengals are larger than (26) _______ tiger species, but the largest tiger ever (27) _______ was a Siberian. As such, Bengals are considered the second largest tiger species.
Today, wild Bengal tigers are animals that only live in Bangladesh, Bhutan, India, and Nepal. (28) _________ there are more Bengals than any other tiger subspecies on the Indian subcontinent, the populations are endangered. Conservation efforts are working to some degree, but they're not (29) __________ the poaching, deforestation, and human encroachment that has devastated wild tiger habitats over the past 50 years
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19/08/2021
2,413
Câu 5:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
The Browns got disappointed after watching a/an _________ basketball match
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19/08/2021
2,152
Câu 6:
Mark the letter A, B, C, or D to indicate the word whose underlined part differs from the three in pronunciation in each of the following questions.
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19/08/2021
2,077
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