Life Science Practice Questions

1. Which of the following describes the proper pathway of blood through the heart?
   1. vena cava → right atrium → right ventricle → pulmonary artery → pulmonary vein → left atrium → left ventricle → aorta
   2. vena cava → right atrium → right ventricle → pulmonary vein → pulmonary artery → left atrium → left ventricle → aorta
   3. vena cava → right atrium → left atrium → pulmonary artery → pulmonary vein → left atrium → left ventricle → aorta
   4. vena cava → right atrium → left atrium → pulmonary vein → pulmonary artery → left atrium → left ventricle → aorta
2. Most human digestion takes place in the
   1. esophagus
   2. stomach
   3. small intestine
   4. large intestine
3. Which blood type can be donated to anyone?
   1. A positive
   2. B negative
   3. O negative
   4. AB positive
4. A typical human gamete contains
   1. 2 chromosomes
   2. 23 chromosomes
   3. 46 chromosomes
   4. 92 chromosomes
5. Which of the following is an example of a primary consumer?
   1. moss
   2. mushroom
   3. jackal
   4. deer
6. How many domains are recognized in taxonomy?
   1. 3
   2. 5
   3. 7
   4. 9