Which is the correct sequence of structures through which light passes in the eye?
A) Lens ? pupil ? cornea ? aqueous humor ? retina
B) Lens ? cornea ? vitreous humor ? retina ? aqueous humor ? pupil
C) Cornea ? aqueous humor ? pupil ? lens ? vitreous humor ? retina
D) Aqueous humor ? cornea ? lens ? pupil ? retina ? vitreous humor
E) Pupil ? vitreous humor ? aqueous humor ? retina ? cornea
C
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The most abundant organic molecules in the world are nucleic acids
Indicate whether the statement is true or false.
Which organism is considered part of the nekton?
a. frigate bird b. penguin c. cormorant d. snowy plover e. albatross
The dry region on the ____ side of mountains is referred to as a rain shadow
a. usually moisture-laden b. windswept c. highest d. windward e. leeward
In a large population of plants, notches in the leaves are caused by a dominant allele N and lack of notches by a recessive allele n. Over many generations the proportion of plants in the population with notched leaves increases. What is the most likely
cause? A) Dominant alleles generally increase in frequency over time. B) The recessive alleles were all masked by the dominant alleles. C) Directional selection favored plants with notched leaves. D) Genetic drift caused a steady movement toward a greater proportion of plants with notched leaves.