Answer the following question given this paragraph: Most plant cells have a large central vacuole . It can make up as much as 90 percent of a plant cell's total volume. The central vacuole is like a large storage container. It may store substances such as water, enzymes, and salts. It may have other roles as well. For example, the central vacuole helps stems and leaves hold their shape. It may also contain pigments that give flowers their colors. Q: Most plant cells have a large central what? Choices: - nuclei - loci - membranes - vacuole A:
vacuole

Answer the following question given this paragraph: Breeding in birds is through internal fertilization, where the egg is fertilized inside the female. Q: Breeding in birds occurs through an internal type of what process? Choices: - segmentation - sedimentation - stimulation - fertilization A:
fertilization

Answer the following question given this paragraph: Q: Each nitrogenous base has one or two rings that include which atoms? Choices: - oxygen - hydrogen - carbon - nitrogen A:
nitrogen