Miller's apparatus was designed to
A. simulate the conditions of early Earth.
B. prove how complex organic molecules originated.
C. support the theory of biogenesis.
D. demonstrate how the first cells originated.
A. simulate the conditions of early Earth.
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Pollen contains that produce .
A. gametophytes; sperm B. sporophytes; sperm C. gametophytes; spores D. sperm; spores E. sporophytes; spores
Leaching is
A) the movement of solutes through soil. B) the breakdown of parent material. C) the gain of cations. D) the loss of leaves from a plant.
If the expression of the PHAN gene is blocked in plants, what will be the likely result?
A) Plants will fail to develop leaves. B) Plants will develop more leaves than usual. C) Plants will develop leaves in very simple shapes. D) Plants will develop leaves in inappropriate places.
Proton pumps are protein complexes that
What will be an ideal response?