Our cells are continually moving things in and out. When this happens without the expenditure of cellular energy, with the concentration gradient, we call this passive transport. If the movement of molecules or ions requires a protein channel of some sort, it is called facilitated transport, still requiring
no energy

Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?

Hurry i need your (100 points) 1) what are the responsibilities of the region of the brain highlighted below? (picture located below) the highlighted portion is at the rear base of the brain, behind the brain stem. regulating homeostasis, hunger and eating, thirst and drinking, and many other functions of basic survival. coordinating movement and balance by using information from sensory nerves, including hand-eye coordination. controlling voluntary body movements, processing information from sense organs, thoughts, and learning abilities. regulating important involuntary bodily functions such as blood pressure, heart rate, breathing, and swallowing. 2)which of the following systems or structures is correctly paired with its function? neurons - brain cells that control thoughts, calculations, and memory cerebral cortex - portion of the brain that controls involuntary body movement peripheral nervous system - carries impulses to and from the central nervous system central nervous system - carries information from the nerves to the muscles and glands

Many humans consume both plants and animals. these humans are considered to be which of the following? herbivores carnivores omnivores