Which of these molecular structures could be found in a lipid, but not in a carbohydrate, protein, or nucleic acid? A. a long chain of carbon, oxygen, and nitrogen atoms B. a long chain made only of carbon and hydrogen atoms C. a phosphate group joined to a chain of carbon atoms D. an amino group and a carboxyl group bonded together

a long chain made only of carbon and hydrogen atoms

Explanation:

Lipids are made of very long carbon chains connected to other carbons and hydrogen. These chairs can be connected to another molecule such as glycerol.

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prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.