29.Sarah and Mike have been trying to have a baby for over ayear and decide to visit a fertility specialist. The clinicianinforms them that Mike’s sperm is not as viable as they should be.Which of the following could be a reason for this?
A. Mike’s sperm are diploid
B. Mike has been exercising too much
C. Mike is unhappy in his marriage
D. Mike tends to wear tight, skinny jeans that cause his scrotumto become closer to his body
28. The inner cell mass of a blastocyst becomes the embryo. Iftwo inner cell mass form, what will be the result?
A. An ectopic Pregnancy
B. A singlet birth
C. Identical Twins
D. Paternal Twins
22. Patients can often alleviate symptoms of an asthma attack byusing drugs called sympathomimetics that mimic the effects ofnorepinephrine. Based on this information, which is the most likelyexplanation for why patients with asthma have difficultybreathing?
A. Constriction of smooth muscle surrounding blood vessels leadsto decreased blood flow to the lungs
B. Dilation of bronchial smooth muscle leads to diminished airflow
C. Interference with skeletal muscle neurons leads to decreasedforce of contractions of the diaphragm
D. Constriction of bronchial smooth muscle leads to diminishedair flow
