A woman cuts all seeds, nuts, oils, and fats from her diet. She believes this will protect her health and help her lose weight. Which statement accurately describes her plan?

a. This is a healthy plan because she cannot store fat if she does not eat fat.
b. This is a healthy plan because seeds, nuts, and oils cause heart disease.
c. This is an unhealthy plan because she cannot get enough protein without those foods.
d. This is an unhealthy plan because she needs fat to absorb nutrients and make hormones.

What is the main structural difference between enveloped and nonenveloped viruses? a) enveloped viruses have their genetic material enclosed by a layer made only of protein. b) nonenveloped viruses have only a phospholipid membrane, while enveloped viruses have two membranes, the other one being a protein capsid. c) enveloped viruses have a phospholipid membrane outside their capsid, whereas nonenveloped viruses do not have a phospholipid membrane. d) both types of viruses have a capsid and phospholipid membrane; but in the nonenveloped virus the genetic material is between these two membranes, while in the enveloped virus the genetic material is inside both membranes.