Which two structures would provide a positive identification of a plant cell under a microscope? cell wall, chloroplast ribosomes, chloroplasts plasma membrane, large central vacuole cell wall, mitochondria need

When is your respiration rate likely to change? a. when your intestines are digesting b. when your cells have too much glucose c. when your cells need more oxygen d. when your liver is working after a meal

Everything in the universe originated from a single point. how was it possible for everything in the universe to have occupied a single point in space?

Internal feedback works to maintain homeostasis when your a. heart rate decreases as your white blood cells increase b. breathing rate decreases as your red blood cells decrease c. heart rate increases as your liver is cleaning blood d. breathing rate increases as your heart rate increases