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Exam 2: Biology and Psychology

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Question 1

Multiple Choice

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Monozygotic twins share _____ of their genes. 

A) 20 percent  
B) 40 percent  
C) 100 percent  
D) 50 percent

E) A) and D)
F) A) and C)

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Question 2

Multiple Choice

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Axons end in small, bulb-shaped structures called _____. 

A) dendrites  
B) terminal buttons  
C) glial cells  
D) neurotransmitter vesicles

E) A) and B)
F) B) and C)

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Question 3

Multiple Choice

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__________is a method of brain imaging that passes a narrow X-ray beam through the head and measures the structures that reflect the beams from various angles, generating a three-dimensional image. 

Being left-handed appears to provide a somewhat greater-than-average probability of having _____. 

Heredity defines one's _____, which is based on biological structures and processes. 

Which of the following is a function of oxytocin?  

__________remove dead neurons and waste products from the nervous system. 

A__________reveals deformities in shape and structure that are connected with blood clots, tumors, and other health problems. 

Paul is a fifty-five-year-old man who has been having some difficulty recalling important details. On visiting a doctor, he was told that he was in the early stages of Alzheimer's disease. The deficiency of__________is most likely to be linked to Paul's condition. 

__________are specialized cells of the nervous system that receive and transmit messages. 

In the context of the brain's language functions, identify the correct statement. 

John recently suffered a blow to his head. Since then, he finds it difficult to comprehend what others say to him. He also finds it difficult to express his thoughts and cannot seem to find the right words to say while speaking. However, he can speak freely with proper syntax. In this scenario, John is most likely suffering from _____. 

A number of people with severe cases of epilepsy have split-brain operations in which much of__________is severed. 

Alicia was recently in a car accident. Since then, she cannot retain memories of events that occurred after the accident. However, she can recall events that took place before the accident. She recognizes her family and friends and important dates, such as her birthday and her marriage anniversary, but has to be constantly reintroduced to the new people in her life. Alicia has most likely sustained damage to her _____. 

Bobby was standing in line to purchase a movie ticket. All of a sudden, the man in front of him took a few steps back and stepped on Bobby's foot. Bobby immediately felt pain in his foot. This sensation was transmitted to the spinal cord and the brain through _____. 

__________takes the form of a double helix and contains the genetic code of an organism. 

Which of the following best describes association areas?  

Will was driving down a road one night. Suddenly, a man appeared in front of his car. Will got scared and slammed the brakes hard, missing the man by inches. Which hormone was responsible for this reaction?  

__________intensifies most emotions and is central to the experience of fear and anxiety. 

Monozygotic twins are important in the study of the relative influences of nature and nurture because differences between monozygotic twins are the result of nurture.