(b) Fig. 4.2 is an electron micrograph of a red blood cell within a capillary. muscle cell
magnification >6500
Fig. 4.2
(1) Molecules of carbon dioxide that are produced in muscle cells are transported to the
blood.
Describe the pathway taken by these molecules of carbon dioxide.
121

The fascicles of the deltoid are ; the fascicles of the pectoralis parallel; bipennate fusiform; unipennate multipennate; triangular bipennate; fusiform

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.

Which describes the changes in the earths motion?