Prostaglandins are thought to cause ________
A) PID
B) menstrual cramps
C) vaginitis
D) endometriosis
B
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Which one of the following is a monosaccharide and not a disaccharide?
A. lactose B. fructose C. sucrose D. maltose E. None of these sugars is a monosaccharide.
Jerry is six years old. His sister Hanah has the autosomal recessive condition neuronal ceroid lipofuscinosis that affects learning and coordination. Their parents are healthy. Given that Jerry has a normal phenotype and is not affected by the disorder, the probability that Jerry is a homozygote for the wild type allele of the gene that causes the condition is
A) 1/8. B) 1/4. C) 1/3. D) 2/3.
The sytoskeleton enabled the primitive cell to become motile.
a. true b. false
Early mammals differed from reptiles in many respects, including:
A) feeding their young milk. B) the number of legs used for walking. C) eating other organisms for food. D) internal versus external fertilization.