Microparasites are usually characterized by
A) a large body size.
B) a long generation time.
C) a long time of infection relative to the host's expected life span.
D) direct transmission from one host to another.
D
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Which lineage has the largest number of Hox genes, reflecting their complex anatomy?
a. cnidarians b. cephalochordates c. vertebrates d. arthropods e. eurochordates
Which of the following is NOT a trend evident
to plant evolution?
a. increasing independence from water b. development of vascular tissue c. increasing dominance of the gametophyte generation d. evolution from one type of spore to two types of spores e. increasing dominance of the diploid phase of the life cycle
Down syndrome (trisomy-21 ) is the only human autosomal trisomy in which the individuals may survive to adulthood
Indicate whether the statement is true or false
Robert Koch was a trained ________ who initially developed a lot of his germ theory of disease by studying bacteremia of ________
a. chemist / Bacillus anthracis b. chemist / Mycobacterium tuberculosis c. physician / Bacillus anthracis d. physician / Mycobacterium tuberculosis