Which of the following is a fun fact of African Painted Dogs? *hey guys i really need help on this !! 1 point
They have sandpaper like tongues
They have thick skin
They hunt in packs using their whites in their tails as signals for others in the pack
Many have similar coat patterns

Despite the differences in mature plant cells, all of them are derived from meristem cells. the three major types of tissue systems develop from the meristem. meristems develop cells in all but which tissue?

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.

What kinds of molecules can pass through the cell membrane without any problem?