Unit Test — Unit test Answers

Kaya had an organ transplant. She went to the doctor a week later, and the doctor did a blood test. Her lymphocyte count had increased. She went to the doctor a month later for the same test, and her lymphocyte count was higher. What is the best explanation as to why her lymphocyte levels were increasing?

Which best describes the brain stem?

The graph shows the changing levels of hormones during menstruation and ovulation. Which hormone has the most influence on preparing the body for pregnancy?

In 2011, the number of transplants in the United States was 26,745, and the number of donors was 14,146. What is most likely the reason that there were more transplants than donors?

What is semen?

Growth of chest hair, deepening of the voice, and muscle growth are secondary sex characteristics. Which structure or structures produce substances most likely to affect the development of these traits?

Some people choose not to get vaccinated because they believe that vaccinations can cause disease. What would be the best evidence to oppose this argument?

Many schools require applicants to take a test, such as the SAT or the ACT, as part of the admissions process. These tests determine students’ knowledge in the subject areas of reading, writing, math, and science. They consist of a variety of question types, including multiple choice, short answer, and essay. Which part of the central nervous system helps students remember the correct answers to the questions on these exams?

When is the most likely time for a female to become pregnant during her menstrual cycle?

The picture represents gas exchange in the alveoli. Observe what is happening at location X.

Saul makes the analogy that the body is like a school. Which is the best analogy for the central nervous system?

The student body president is launching a campaign to fight the spread of flu in his school. Which of the following should he encourage students to do?

Consider the photograph. The taller man's condition is due to a malfunction in the pituitary gland, which secretes growth hormone. Damage to which part of the brain may be indicated by this condition?

In the heart, one ventricle pushes blood with oxygen to the cells of the body. Where does the other ventricle push the blood without oxygen?

Which actions are involved in the immune response?