Alcohol is the end product of fermentation by what type of organism?
a. cow
b. algae
c. yeast
d. protist
e. bacteria
c
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With regard to the destruction of tropical forests, the focus is often on biodiversity and the impact to these ecosystems. What is a direct benefit to humans that helps explain why these forests need to be preserved?
A) This diversity could contain undocumented insect species. B) Natural and undisturbed areas are important wildlife habitats. C) The diversity could contain novel drugs for consumers. D) The plant diversity provides shade, which lowers global warming.
At the endodermis is a thin band of hydrophobic material that prevents water passage between cells called the:
A. Casparian strip. B. cortex. C. medulla. D. plasmodesmata. E. parenchyma.
The endoplasmic reticulum is a site for
A) potassium storage in muscle cells. B) drug detoxification by catalase. C) N-linked glycosylation of polypeptides. D) addition of lipid residues. E) degradation of foreign material brought into the cell by phagocytosis.
Select the best choice for the following statements in reference to the classes listed below.
A. Members of this class have cartilaginous skeletons but also possess jaws. B. Members of one unusual group may have been ancestors of tetrapods. C. Members of this class are fully terrestrial except for reproduction. D. Some species of this class live in water but are not dependent upon an aquatic environment.