What would happen if more than one sperm penetrated a secondary oocyte, an event termed polyspermy?
A. Identical twins would result.
B. The extra sperm would most likely fertilize one of the polar bodies.
C. This never happens due to genetic controls.
D. The resulting zygote would not develop.
E. The sperm with the most advanced chromosomes would merge with the female nucleus.
Answer: D
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A. 1 B. 2 C. 3 D. 4 E. 5
Which of the following is not true of saliva?
A) cleanses the mouth B) contains enzymes that begin the breakdown of proteins C) moistens food and aids in compacting of the bolus D) dissolves food chemicals so they can be tasted
The somatic nervous system’s neurotransmitter is
1.norepinephrine. 2.acetylcholine. 3.bound by alpha-receptors. 4.bound by beta-1- receptors. 5.bound by muscarinic receptors.
Mesoderm gives rise to muscle, bone, and blood.
Answer the following statement true (T) or false (F)