Injecting a person with a vaccine so the body will create antibodies against a disease is an example of which type of immunity?
a-natural acquired
b- natural passive
c- artificial acquired
d- natural

Can occur if you do not modify your workout after a break

What is the longest you should ice the injured area at one time? a. 10-20 minutes b. 30-60 minutes c. 1-2 hours d. as long as you want

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.