In C3 photosynthesis, what fixes the carbon?
A) RuBP B) PEP C) PGAL D) ATP E) PGA
A
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A scientific theory ____
a. is widely accepted and supported by several evidences b. is widely accepted but not necessarily supported by several evidences c. is sometimes accepted and supported by several evidences d. is sometimes accepted and not necessarily supported by several evidences e. is always a "truth"
Who first described cells?
A. Darwin B. Leeuwenhoek C. Linnaeus D. Hooke E. Golgi
This component of the cytoskeleton is located just under the plasma membrane of a eukaryotic cell.
a. actin filaments b. microtubules c. centrosomes d. intermediate filaments
According to the concept of punctuated equilibrium,
A) natural selection is unimportant as a mechanism of evolution. B) given enough time, most existing species will branch gradually into new species. C) a new species accumulates most of its unique features as it comes into existence. D) evolution of new species features long periods during which changes are occurring, interspersed with short periods of equilibrium or stasis. E) transitional fossils, intermediate between newer species and their parent species, should be abundant.