Which brain structure allows us to pay attention to certain stimuli while ignoring others?.

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.

What typically happens when a family member has a problem with alcohol or drugs? the entire family is affected. children in the family are affected more than adults. adults in the family are affected more than children no one in the family is affected.

Match the following. 1. an excellent source of vitamin c and vitamin a sucrose 2. linked to increased immunity and the destruction of toxic substances within the body vitamin a 3. found in yellow and green vegetables and fruits 2 vitamin c 4. vitamin in maintaining good eyesight and the treatment of infection fiber 5. the type of sugar found in all fruits 1 vegetables 6. table sugar skin 7. to keep the digestive system working properly and guards against colon cancer 3 carotene 8. where most of the fiber and vitamins are found in fruits and vegetables fructose