Q:1-Finches with medium beak size feed on seeds. These birds aren't specialized to feed on insect larvae or cactus fruit like finches with short or long beaks. What type of selection would be observed if deforestation removed all the trees from the area where these birds obtained seeds?
Mark one answer:
Sexual selection
Multi-directional selection
Disruptive selection
Stabilizing selection

Q:6-Which of the given circulatory system elements has the highest partial pressure of oxygen?
Mark one answer:
Superior vena cava
Pulmonary arteries
Left atrium
Right atrium

Q:7-Alcohol consumption generally leads to greater urine volume. How does alcohol affect urine concentration in the body?
Mark one answer:
Alcohol stimulates ADH and causes the urine to become very concentrated.
Alcohol inhibits ADH, and prevents water from leaving the collecting duct and entering the renal medulla.
Alcohol inhibits ADH, and causes water to diffuse into the renal medulla from the collecting duct.
Alcohol stimulates ADH, which causes an increase in renin secretion

Q:8-During embryonic development, which stage begins after the formation of 128 cells and terminates with germ layer differentiation?
Mark one answer:
Zygote stage
Gastrula stage
Somitogenesis stage
Blastula stage

Q:9-Which body part would you not expect to develop from the ectoderm?
Mark one answer:
The intestinal lining
The cerebellum
The spinal cord
The eyes

Q:10-The relative refractory period is a period during the generation of an action potential during which _____.
Mark one answer:
the cell cannot create another action potential
only an abnormally large stimulus will create an action potential
the cell is depolarized
a normal stimulus can create another action potential