Answer the following question given this paragraph: Q: Chloroplasts are the little green particles in plants made up of what colorful pigment? Choices: - verdigris - carbonate - melanin - chlorophyll A:
chlorophyll
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Answer the following question given this paragraph: Fingernails and toenails consist of specialized epidermal cells that are filled with keratin . The keratin makes them tough and hard, which is important for the functions they serve. Fingernails prevent injury by forming protective plates over the ends of the fingers. They also enhance sensation by acting as a counterforce to the sensitive fingertips when objects are handled. Nails are similar to claws in other animals. They cover the tips of fingers and toes. Fingernails and toenails both grow from nail beds. As the nail grows, more cells are added at the nail bed. Older cells get pushed away from the nail bed and the nail grows longer. There are no nerve endings in the nail. Otherwise cutting your nails would hurt a lot!. Q: What fills the epidermal cells that make up fingernails and toenails? Choices: - cellulose - chromatin - amino acids - keratin A:
keratin
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Answer the following question given this paragraph: 3.1 | Synthesis of Biological Macromolecules By the end of this section, you will be able to: Understand the synthesis of macromolecules Explain dehydration (or condensation) and hydrolysis reactions As you've learned, biological macromolecules are large molecules, necessary for life, that are built from smaller organic molecules. There are four major classes of biological macromolecules (carbohydrates, lipids, proteins, and nucleic acids); each is an important cell component and performs a wide array of functions. Combined, these molecules make up the majority of a cell's dry mass (recall that water makes up the majority of its complete mass). Biological macromolecules are organic, meaning they contain carbon. In addition, they may contain hydrogen, oxygen, nitrogen, and additional minor elements. Q: The four major classes of biological macromolecules include carbohydrates, lipids, proteins, and what else? Choices: - liquids - fats - structural acids - nucleic acids A:
nucleic acids
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Answer the following question given this paragraph: Adolescents may have mood swings because of surging hormones. Q: Many adolescents experience frequent mood swings. name one of the causes for this. Choices: - maturing nervous system - psychological changes - growing hormones - surging hormones A:
surging hormones
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