The ________ provides nourishment for the lens and cornea
A) vitreous humor
B) aqueous humor
C) optic nerve
D) retina
E) choroid
B
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Chemical evolution may have become relatively sophisticated before cells first arose in ________
a. hydrothermal vents and on clay particles in shallow mud flats b. nebulae c. algal mats and stromatolites d. hydrothermal vents and stromatolites
The ____ water mold was responsible for the Irish famine in the mid-1800s
a. Phytophthora b. Plasmodium c. E. coli d. Staphylococcus e. Trichomonas
What is the difference between the leading strand and the lagging strand in DNA replication?
A) The leading strand is synthesized in the ? direction in a discontinuous fashion, while the lagging strand is synthesized in the ? direction in a continuous fashion. B) The leading strand is synthesized continuously in the ? direction, while the lagging strand is synthesized discontinuously in the ? direction. C) The leading strand requires an RNA primer, whereas the lagging strand does not. D) There are different DNA polymerases involved in elongation of the leading strand and the lagging strand.
Trisomy is a mutation that results in a cell having an extra ________
Fill in the blank(s) with correct word