Microbes with _____infectious doses are usually more virulent
Fill in the blank(s) with the appropriate word(s).
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Which statement best describes fertilization in the fern life cycle?
a. Pollen is blown by the wind to a female cone, where it forms a pollen tube that grows toward where the egg will form. b. Flagellated sperm swim in a film of water on the surface of the plant to reach an egg. c. Flagellated sperm are blown by the wind to a location near an egg, and then swim through plant fluids to reach the egg. d. Flagellated sperm swim through plant fluids to reach an egg. e. Flagellated sperm attach to the moist skin of certain animals and are transferred to the surface of the plant to reach an egg.
Which lineage(s) diverged before the turtle lineage?
a. mammalian d. mammalian and amphibian b. amphibian e. amphibian and lizard c. lizard
Refer t o the figure. Initially, in terms of tonicity, the solution in side A with respect to the solution in side B is _____
A) hypotonic B) isotonic C) saturated D) hypertonic
The incorporation of the lacZ gene into the JCVI-syn1.0 genome was used as an indicator for successful transplantation because ________
A) the original genome of M. mycoides contained lacZ B) the M. capricolum genome did not include lacZ C) tetracycline resistance is conferred by lacZ D) tetracycline resistance is a selective marker