Which of the following best describes the function of flagella and cilia? A. They destroy foreign materials that enter the cell from the external environment

B. They block the uncontrolled movement of materials into or out of a cell

C. They play an important role in the modification and packaging of proteins

D. They assist the cell in moving

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.

What is the most abundant vertebrate on earth?

What household products contain algae?