百度试题 结果1 题目1. Do you know what the nucleus(核) of a cell(细胞) is? 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
A. To carry out photosynthesis. B. To store water. C. To control the activities of the cell. D. To provide support. 相关知识点: 试题来源: 解析 C。中文解析:细胞核控制着细胞的活动,“The nucleus, which controls the activities of the cell, was also clearly visible.”。 反馈...
Bacteria are prokaryotic cells, meaning that they do not have a membrane-enclosed nucleus. Eukaryotes have cells with am enclosed nucleus. Where in these types of cells can DNA be found? What is a prokaryotic cell? Give a simple definition. ...
The nucleus in a cell is the membrane-bound organelle that contains the DNA for the cell. All eukaryotic cells have a nucleus, while the other cell...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your ...
Within a cell, a DNA double helix is approximately 10 nanometers (nm) wide, whereas the cellular organelle called a nucleus that encloses this DNA can be approximately 1000 times bigger (about 10 μm). See how cells compare along a relative scale axis with other molecules, tissues, and ...
结果1 题目What gives the plant cell its shape? A. The nucleus. B. The chloroplasts. C. The cell wall. D. The plasmodesmata. 相关知识点: 试题来源: 解析 C。解析:文章中提到植物细胞有一个明显的细胞壁,它赋予了细胞形状。反馈 收藏
结果1 题目What contains the cell's DNA? A. The cytoplasm B. The mitochondria C. The nucleus D. The E. ndoplasmic reticulum 相关知识点: 试题来源: 解析 C。解析:细胞核包含细胞的 DNA,细胞质、线粒体和内质网都不包含 DNA。反馈 收藏
Prokaryotic cells have no nucleus. Instead, some prokaryotes such as bacteria have a region within the cell where the genetic material is freely suspended. This region is called the nucleoid. They all are single-celled microorganisms. Examples include archaea, bacteria, and cyanobacteria. The cell ...
What are the main structures within the nucleus of a cell? What are cells that have a nucleus called? What is the core function of the cell membrane? What is the nucleolus? Discuss its function. What is the function of the mitochondria of the cell? Explain in detail. ...
What is the biological name given to the proteins associated with DNA? What is DNA sequencing? What molecules are present in DNA? What type of cells have DNA inside a nucleus? What is a single-ring nitrogenous base found in DNA and RNA called? What is the process by which the genetic ...