A molecule is a fundamental concept in chemistry that represents the smallest unit of a chemical compound that retains the properties of that compound. It's formed when two or more atoms come together and bond with each other.
Atoms are the basic building blocks of matter. They consist of a nucleus composed of protons and neutrons, surrounded by a cloud of electrons. Atoms can combine with each other through chemical bonds to form molecules. One of the most common types of chemical bonds is the covalent bond. In a covalent bond, atoms share electrons to achieve a more stable electron configuration.
In ionic bonding, atoms transfer electrons to each other, resulting in the formation of ions with opposite charges. These ions are attracted to each other, creating an ionic bond. The arrangement of atoms within a molecule is crucial to its properties and behavior. The type and arrangement of bonds determine the molecule's shape and how it interacts with other molecules.
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Explanation:A special case of polar forces occurs in what is called the hydrogen bond. In many situations, when hydrogen forms a covalent bond with another atom , electrons move toward that atom, and the hydrogen acquires a slight positive charge. The hydrogen, in turn, attracts another atom, thereby forming a kind of bridge between the two.
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Answer: Capillaries
Explanation:
Capillaries are the thin-walled blood vessels that connect arteries to veins. They are essential for the distribution of oxygenated blood from arteries to the tissues and carrying back deoxygenated blood towards the heart. Capillaries, which are about 120 angstroms in diameter, also facilitate the exchange of nutrients, oxygen, and waste products between the blood and cells.
The thin-walled blood vessels that connect arteries to veins are called capillaries. Capillaries are the smallest and thinnest of the blood vessels in the body and they serve to distribute oxygenated blood from arteries to the tissues. After oxygen is used by these tissues, the deoxygenated blood is then carried back towards the heart by veins.
Because capillaries are so thin, they allow the exchange of nutrients, oxygen, and waste products between blood and the cells. With a diameter of about 5 to 10 micrometers, they are just about 120 angstroms, which is wide enough for blood cells to pass in single file. Capillaries are a crucial part of the circulatory system and are found throughout the body, making up a large part of the body's total blood vessels.
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B) oak
C) virus
D) liver
Answer;
-Liver
Explanation;
-Eukaryotic cells are cells that contain a nucleus. Eukaryotic cells are usually larger than prokaryotic cells, and they are found mainly in multicellular organisms. Organisms with eukaryotic cells are called eukaryotes, and they range from fungi to people.
-Eukaryotic cells also contain other organelles besides the nucleus. An organelle is a structure within the cytoplasm that performs a specific job in the cell. Organelles called mitochondria, for example, provide energy to the cell, and organelles called vacuoles store substances in the cell.
B. It has territorial borders.
C. It has its own bill of rights.
D. It trades with other nations.
It has its own bill of rights.