A. an atom B. a molecule C. a cell D. an organism 相关知识点: 试题来源: 解析 A。解析:物质的最小单位是原子。选项 B 分子由原子组成;选项 C 细胞是生物体的基本单位;选项 D 生物体是由细胞组成的。相关科普知识点为物质的结构。反馈 收藏 ...
The smallest unit of matter is ___. A. atom B. molecule C. cell D. organ 相关知识点: 试题来源: 解析 A。物质的最小单位是原子。听力中听到关于物质组成以及最小单位的描述可判断。选项 B“molecule”是分子;选项 C“cell”是细胞;选项 D“ ...
A. Atom B. Molecule C. Cell D. Organ 相关知识点: 试题来源: 解析 A。解析:原子(Atom)是物质的最小单位。分子(Molecule)由原子组成;细胞(Cell)是生物体的基本结构和功能单位;器官(Organ)是由细胞和组织构成的。从语法上这是关于物质基本单位的特殊疑问句,选项为不同物质或生物结构名称。反馈...
Atoms have great variations in weight, although they are all about the same size. The diameter of an atom is a million times smaller than one strand of thick human hair, very tiny indeed. The diameters of atoms range from approximately 0.1 to 0.5 nanometers. For example, plutonium, which ...
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TheSetContent()API takes a primary rune, and an optional list of combining runes. If any of the runes is a wide (East Asian) rune occupying two cells, then the library will skip output from the following cell, but care must be taken in the application to avoid explicitly attempting to ...
On Earth, we use atomic clocks to keep time. Atomic clocks measure the passing of time based on the number of vibrations that occur within an atom. An atom is the smallest unit of matter that makes up an element...
In non-interacting systems, bands from non-trivial topology emerge strictly at half-filling and exhibit either the quantum anomalous Hall or spin Hall effects. Here we show using determinantal quantum Monte Carlo and an exactly solvable strongly interact
White matter is composed of bundles, which connect various grey matter areas (the locations of nerve cell bodies) of the brain to each other, and carry nerve impulses between neurons. Myelin acts as an insulator, which allows electrical signals to jump, rather than coursing through the axon, ...
Some red algae (an example is Gracilariopsis lemaneiformis) metabolize 20C acids via 8-, 9- or 12-lipoxygenase (LOX)-initiated pathways, whereas other species contain oxylipins of the eicosanoid family produced by 5R-, 8R-, 9S-, 12S- and 15S-lipoxygenase action, as well as octadecano...