WGU C190 Intro To Biology - Unit 3 Exam Questions With Complete Solution 2025/2026

WGU C190 Intro To Biology - Unit 3 Exam Questions With Complete Solution 2025/2026 Features of DNA - answer-Function: Stores genetic information. Location: Remains in the nucleus. Structure: Double helix. Sugar: Deoxyribose. Pyrimidines: Cytosine, Thymine. Purines: Adenine, guanine. Features of RNA - answer-Function: Involved in protein synthesis. Location: Leaves the nucleus. Structure: Usually single-stranded. Sugar: Ribose. Pyrimidines: Cytosine, uracil. Purines: Adenine, guanine. Actin - answer-Filament in the Cytoskeleton which has a prominent role in cell movement, maintaining cell shape, and connection to other cells, as well as intracellular transport. Cell Membrane - answer-provides a barrier between the interior and exterior of the cell and it regulates the flow of substances in and out of the cell. Cell wall - answer-Protective layer for prokaryotes, made of peptidoglycan. central vacuole - answer-In a plant cell. can be a place of storage, degradation, defense, and even physical support for the cell. centriole - answer-A barrel-shaped structure only present in animal cells. plays a role in the spatial organization of the cell and cell division. chloroplast - answer-In a plant cell. Chloroplasts capture energy from the sun and use that energy to build sugar molecules. chromatin - answer-the material of which the chomrosomes of organisms are composed. Consists of protein, RNA and DNAchromosome - answer-A single molecule of DNA. cilium - answer-a short, microscopic, hairlike vibrating structure. Occurs in large numbers on the surface of certain cells.