1. The biological macromolecules composed of multiple units of amino acids isA CarbohydratesC. LipidsB. ProteinsD. Cellulose2. Which of the following sugars is a disaccharide?A FructoseC. GlucoseB. GalactoseD. Sucrose3. Carbohydrates contains the following elements EXCEPTA. CarbonC. NitrogenB. HydrogenD. Oxygen4. Which of the following polysaccharide is found in the cell wall of plants?A. AmyloseC. CelluloseB. AmylopectinD. Starch5. A disaccharide which is mainly found in milk and other milk products isA. GlucoseC. MaltoseB. LactoseD. Sucrose

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Science
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rileyadams
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1 year ago

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1. B. Proteins

Biomacromolecules are large biological polymers, such as nucleic acids, proteins, and carbohydrates, that are made up of monomers linked together. For example, proteins are composed of monomers called amino acids.

2. D. Sucrose

Sucrose is common sugar. It is a disaccharide, a molecule composed of two monosaccharides: glucose and fructose. Sucrose is produced naturally in plants, from which table sugar is refined. It has the molecular formula C₁₂H₂₂O₁₁.

3. C. Nitrogen

A carbohydrate is a biomolecule consisting of carbon (C), hydrogen (H) and oxygen (O) atoms, usually with a hydrogen–oxygen atom ratio of 2:1 (as in water) and thus with the empirical formula Cm(H2O)n (where m may be different from n).

4. D. Starch

Starch (a polymer of glucose) is used as a storage polysaccharide in plants, being found in the form of both amylose and the branched amylopectin.

5. B. Lactose

Lactose is a major disaccharide present in milk. It is composed of two simple sugars, glucose and galactose.

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