Why should you reward yourself for your accomplishments?
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a. nothing is worth doing unless there's a reward at the end.
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b. to keep yourself motivated and take good care of yourself.
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c. without rewards, you'll probably forget why you set your goals.
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d. all of the above.

Which one of the following reasons is not typically why athletes strive for lower body weight and lower body fat?

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.

Which of the following can be effective in preventing the onset of viral infection in humans? a) taking vitaminsb) getting vaccinatedc) taking antibioticsd) taking drugs that inhibit transcription