Which statement(s) are true about the figure shown?      I.  It has exactly 2 lines of symmetry.      II.  It has 90° rotational symmetry.      III.  It has 45° rotational symmetry.       iV.  It has exactly 4 lines of symmetry.

Find the length of the hypotenuse for the following triangle. (Round to the nearest thousandth.)

The current theory of the structure of the plasma membrane is best described by the ______ model.

10.  A protein & lipid sheath that imparts a white appearance to the area around an axon, produced by Schwann cells as an example, is called:

36.  Name the structure shown by the arrow:        

Red-green color blindness is an X-linked recessive trait. If a man who has red-green color blindness has children with a woman who is neither color blind nor a carrier, what are the odds that their sons may be color blind?

(10 pts.) What is the change in entropy when 15.0 g of water at 100°C are turned into steam at 100°C? The latent heat of vaporization of water is 22.6 × 105 J/kg.

3.  Cell bodies of most sensory neurons are typically located in the:

What hormone stimulates the adrenal cortex to secrete cortisol?

During somatic recombination of immunoglobulins, which of the following would you expect to see?