Q: What part of a mature plant cell is responsible for storing substances like water, enzymes, and salts? Choices: - little vacuole - second vacuole - large vacuole - central vacuole A:
central vacuole

Q: Where is the potential energy of a river the highest at? Choices: - the middle - the ocean - the bank - the source A:
the source

Q: What are the sites of protein synthesis or assembly? Choices: - chloroplasts - chromosomes - plasma - ribosomes A:
ribosomes

Q: Introduction genetics is the study of what? Choices: - biology - variability - obesity - heredity A:
heredity