Genetic variation results from the crossing over and exchange of chromosomal parts that occur during meiosis II
Indicate whether the statement is true or false
FALSE
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Generally, the fourth vessel to branch off the abdominal descending aorta is the
A. celiac artery. B. IMA. C. right renal artery. D. left renal artery. E. SMA.
Which of the following statements regarding endocytosis and exocytosis is correct?
A. Endocytosis is a method by which large molecules may be secreted from a cell. B. Exocytosis is a method by which large molecules may be secreted from a cell. C. Pinocytosis is a form of endocytosis; phagocytosis is a type of exocytosis. D. Pinocytosis is a form of exocytosis; phagocytosis is a type of endocytosis. E. Pinocytosis and phagocytosis are both types of exocytosis.
If an isotope of oxygen has 8 protons, 10 neutrons, and 8 electrons, its mass number is
A) 26. B) 16. C) 18. D) 8. E) 12.
Which of the following might happen if a person begins laughing while swallowing a liquid?
A. laryngeal constriction forcing liquid through the pharynx B. relaxation of the soft palate allowing liquid to enter the nasal cavity C. the tongue might be swallowed D. nothing - swallowing will be normal E. peristalsis will not begin