Over the course of evolutionary time, animal body sizes have gotten larger, yet cell sizes have not. cells have stayed proportionally the same size to remain efficient, which is due to the fact that group of answer choices larger cells would become limited by the ability to move materials across the plasma membrane. the inability of the nucleus to produce sufficient dna for larger cells. limitations of the composition of the plasma membrane. both a and b if cells got larger, the demand for energy and raw materials would greatly increase.

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution

Types of scientific inquiry that biologist engage in that cannot be completely controlled

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.