The following sections are included:First Ideas on the Nature of the NucleusMoseley's Contribution to Understanding Atomic NumbersBreaking Up the NucleusAnother Particle is Found First Ideas on the Nature of the Nucleus Moseley's Contribution to Understanding Atomic Numbers Breaking Up the Nucleus ...
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...
The nucleus is perhaps the most important structure inside animal and plant cells. It isthe main control center for the cell and acts kind of like the cell's brain. ... In fact, the definition of a eukaryotic cell is that it contains a nucleus while a prokaryotic cell is defined as no...
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
The nucleus directs all activities that occur within the cell and also contains the cell’s genetic material, or DNA.The nucleus gives the signal to the cell to grow, divide or make proteins. A nuclear envelope surrounds the nucleus, allowing only certain substances to enter and exit. ...
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
If an atom were about as big as a baseball stadium, the nucleus would be the size of a pea in the very center and the electrons would be somewhere on the outside edge.What makes an atom of gold different from an atom of iron is the number of protons, neutrons, and electrons inside...
on the other hand, is pretty much the opposite.It occurs when two atoms collide and then nuclei combine, or fuse, to form a heavier nucleus.This is the reaction that powers the Sun, all stars.So, who can tell me what makes fusion more attractive than fission as an energy source. Julie...
实平稳随机过程的功率谱密度等于其希尔伯特变换的功率谱密度。（ ）
翻译：碳的原子质量是什么？