Lotions applied during winter season moisturize the skin very quickly. what could be the reason for this?
a.
the oils in the lotion enter the skin cells by means of phagocytosis.
b.
the oils in the lotion enter the skin cells with the of carrier proteins.
c.
the oils in the lotion enter the skin cells by means of facilitated diffusion.
d.
the oils in the lotion enter the skin cells by means of simple diffusion.

Ascientist wants to determine the effect of a new type of gasoline. he fillsone car with normal gasoline and another identical car with the new gasoline. which is the control group? a. the new type of gasolineb. the car with the normal gasolinec. the car with the new gasolinethe amount of gasoline usedd. the amount of gasoline used

Female luna moths (actias luna) attract males by emitting chemical signals that spread through the air. a male hundreds of meters away can detect these molecules and fly toward their source. the sensory organs responsible for this behavior are the comblike antennae visible in the photograph shown here. each filament of an antenna is equipped with thousands of receptor cells that detect the sex attractant. based on what you learned in this chapter, propose a hypothesis to account for the ability of the male moth to detect a specific molecule in the presence of many other molecules in the air. what predictions does your hypothesis make? design an experiment to test one of these predictions.

How do all types of diffusion/passive transport actually ‘work’ without using even the smallest amount of cellular energy?