Q: Most plant cells have a large central what? Choices: - nuclei - loci - membranes - vacuole A:
vacuole

Q: Breeding in birds occurs through an internal type of what process? Choices: - segmentation - sedimentation - stimulation - fertilization A:
fertilization

Q: Each nitrogenous base has one or two rings that include which atoms? Choices: - oxygen - hydrogen - carbon - nitrogen A:
nitrogen