百度试题 结果1 题目The nucleus of an atom is _ of swiftly moving protons(质子)and neutrons(中子)that are bound together by very strong forces. A. consisted B. contained C. composed D. compressed相关知识点: 试题来源: 解析 C 反馈 收藏 ...
Atoms are made from a nucleus of protons and neutrons and a cloud of electrons.A. 正确B
(原子)核 the central part of an atom, consisting of protons and neutrons · C 2. 中心,核心 central part, around which other parts are grouped or collected · 句型例句 The nucleus of an atom consists of neutrons, protons and other particles.原子核 由中子、质子和其他粒子构成。 Many people ...
1 :a usually round part of most cells that is enclosed in a double membrane, controls the activities of the cell, and contains the chromosomes. 2 : the central part of an atom that comprises nearly all of the atomic mass and that consists of protons and neutrons. What is an example of...
· Empty space - whereas the atomic nucleus has an empty space between the nucleus and the electron cloud, the cellular nucleus does not have any empty space (this is due to the presence of nucleoplasm)· Nucleus components - Whereas the atomic nucleus consists of protons and neutrons, the ...
题目 The nucleus of the atom is composed of swiftly moving protons and neutrons that are___together by very strong forces. (A) mixed (B) propelled推进(C) pounded打击(D)bound 相关知识点: 试题来源: 解析 held 反馈 收藏
1. Chemistry The positively charged central region of an atom, composed of protons and neutrons and containing most of the mass of the atom. See more at atom. 2. Biology The structure in the cytoplasm of a living cell that contains the cell's DNA and controls its metabolism, growth, and...
结果1 题目 The nucleus of the atom is composed of swiftly moving protons and neutrons that are___together by very strong forces. (A) mixed (B) propelled推进(C) pounded打击(D)bound 相关知识点: 试题来源: 解析 held 反馈 收藏
Figure 1.2 gives the combinations of protons and neutrons that are found to be stable nuclei. This information may also be presented as an area of stability, Fig 1.4. Nuclei lying outside this area may be regarded as having the wrong combination of protons and neutrons and are unstable. Unst...
At the centre of every atom is the atomic nucleus. The nucleus consists of particles calledprotonsand neutrons(collectively callednucleons) and contains almost all of the atom's mass, but is extremely tiny, with a diameter of about 10^-15 metres (0.000 000 000 000 001 m) or one femtomet...