Trichinellosis, also known as trichinosis, occurs when
A) inhaled cysts perforate the lungs as they make their way to the intestines.
B) ingested cysts mature into adult worms and cause the host to suffer from malnutrition.
C) ingested cysts mature into worms in the intestines and the larvae migrate into blood and embed in muscles.
D) ingested cysts mature into adult roundworms and release thousands of eggs as the adult releases toxins to promote severe diarrhea.
E) ingested cysts mature into adult tapeworms and release proglottids that force their way out of the anus.
Answer: C
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Cell division is regulated by:
A. growth factor signals. B. signals that indicate a sufficient size of the cell. C. signals that indicate that DNA has been replicated. D. signals about the nutritional status of the cell. E. All of these choices are correct.
Homologous chromosomes are held together in the
A) synaptonemal complex. B) centromere. C) kinetochore. D) nucleus. E) MTOC
Low sperm ____________________ results in the inability of sperm to move through cervical mucus and reach the egg in the oviduct
Fill in the blank(s) with correct word
Fossil evidence indicates that ____ were common among ancient land plants
a. fungal infections b. endomycorrhizae c. lichens d. haustoria e. ectomycorrhizae