Ethanol can be easily produced from ____

a. photosynthetic pigments
b. crystalline cellulose
c. root systems of plants
d. plant sugars
e. stems of plants


ANSWER: d

Biology & Microbiology

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Which of the following statements about the causes of extinction are true? Check all that apply.  

_____  Probability of extinction varies inversely with population size. _____  Ten 10-hectare habitat patches is not the same as one 100-hectare patch. _____  Habitat loss is currently the major cause of extinction. _____  The prehistoric megafauna of North America were spared from extinction because they coevolved with humans. _____  Probability of extinction is greatest for an endemic species.

Biology & Microbiology

The microorganism Cryptosporidium parvum is a

A) fungus. B) bacterium. C) protozoan. D) virus.

Biology & Microbiology

Who observed that species of organisms on different islands were clearly similar, yet had distinct differences?

What will be an ideal response?

Biology & Microbiology

Diffusion moves items with their concentration gradient

a. true b. false

Biology & Microbiology