Which plant group has a dominant gametophyte generation when compared to the sporophyte generation?
a. flowering plants
b. gymnosperms
c. ferns
d. horsetails
e. bryophytes
E; Bryophytes are least adapted to land and thus have a dominant gametophyte generation.
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Bacteria within biofilms exchange
A. plasmids. B. nutrients. C. quorum-sensing molecules. D. All of the choices are correct.
The most definitive test to diagnose a helminth infection is
A. a good medical history of the patient, including recent foreign travel. B. an ova and parasite smear for microscopy. C. a serological test for the presence of anti-helminthic antibodies. D. a blood cell count to look for elevated levels of eosinophils.
The pH of human blood is approximately 7.4 and the body temperature is approximately 37 °C. Which of the following best describes a human pathogen?
A) neutrophiles & acidophiles B) acidohphiles & thermophiles C) neutrophiles & mesophiles D) thermophiles & mesophiles
In eukaryotes, all of the different types of RNA are transcribed in the ____________.
A. mitochondria B. cytoplasm C. ribosomes D. nucleus E. endoplasmic reticulum