When toxins affect sperm cells, the damaged sperm usually
A) do not survive the long journey to the egg.
B) have minimal impact on the child that is created.
C) lead to low energy levels when the toxin is alcohol.
D) multiply at rapid rates leading to multiple pregnancies.
A
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Pregnant partners of older fathers are more likely to have preterm deliveries.
Answer the following statement true (T) or false (F)
Which technique of prenatal diagnosis generates an image of the developing baby's body shape?
a. DNA analysis b. Ultrasound c. Amniocentesis d. Chorionic villus sampling
Melissa likes to put her headphones on and listen to her MP3 player at very high volume. This habit could damage the __________ in her ears, which can result in permanent hearing loss
a. eardrums b. hair cells c. semicircular canals d. small bones
The neural impulse traveling down the axon is __________; it gets across the synapse by __________.
A. electrical; remaining electrical but changing from positively charged to negatively charged B. electrical; remaining electrical but changing from negatively charged to positively charged C. electrical; changing into a chemical message D. chemical; changing into an electrical message