Which child may have a behavioral problem? a. three-year old pete hits his sister when she takes his toy. b. two-year old mansoor cries when his mother goes to work. c. nine-year old margarita has been wetting the bed in the last few weeks. d. thirteen-year old yuan is easily excitable.

Carissa, age 14, having trouble keeping up with all her assignments and when they are due. in addition to that, she struggles to balance school work, chores at home, social life, and playing volleyball. question 1 options: underdeveloped frontal lobe underdeveloped amygdala underdeveloped cerebellum underdeveloped corpus callosum question 2 (5 points) teens are not as adept at interpreting facial expressions and emotions as adults. what is the reason for this? question 2 options: teens use the frontal lobe more than adults which interferes with the use of the other areas of the brain like the amygdala. teens use the amygdala and adults use the frontal lobe to differentiate between similar facial expressions and emotions. adults have a thicker corpus callosum than teens which allows them to use both sides of their brain more efficiently. the lymbic regions of the brain are used more in adulthood than adolescence. question 3 (5 points) the human brain's development is like pruning a tree. as one grows older the unused connections in the brain are removed to make room for new growth. question 3 options: true false question 4 (5 points) michael, age 16, driving his car fast down a curvy road without his headlights on. question 4 options: underdeveloped amygdala underdeveloped cerebellum underdeveloped frontal lobe underdeveloped corpus callosum

Saved if you often notice flakes of dead skin on your shirt, you may have dandruff. if so,

You isolate an infectious substance capable of causing disease in plants, but you do not know whether the infectious agent is a bacterium, virus, viroid, or prion. you have four methods at your disposal to analyze the substance and determine the nature of the infectious agent. i. treat the substance with enzymes that destroy all nucleic acids and then determine whether the substance is still infectious. ii. microscope. iii. culture the substance on nutritive medium, away from any plant cells. iv. treat the sample with proteases that digest all proteins and then determining whether the substance is still infectious. if you already know that the infectious agent was either bacterial or viral, which method(s) listed above would allow you to distinguish between these two possibilities? a) ib) iic) ii or iiid) iv