Sexually transmitted diseases between sexually active partners are most commonly transmitted by which method?
A) fomites
B) horizontal direct contact
C) vehicles
D) vertical direct contact
Answer: B) horizontal direct contact
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The ecological diversity of microbes is largely dependent on their complex morphological and structural diversity
Indicate whether the statement is true or false.
Why don't all animals that group hunt show the same evolutionary trajectory?
What will be an ideal response?
Both prokaryotic and eukaryotic cells possess
A) mitochondria. B) ribosomes. C) a nucleus. D) chloroplasts.
A scientist collects a protist from a rotting log. He grows the protist in a petri dish that contains Escherichia coli bacteria; the protist engulfs the bacteria. For a while the protist multiplies as single cells. When the E. coli are all consumed, the
protists aggregate to form a clump that rises up to become a stalked structure with a globular head. What kind of protist does the scientist have? A) a plasmodial slime mold B) a cellular slime mold C) a free-living amoeba D) a water mold