We are currently in the
a. Archaean eon.
b. Proterozoic eon.
c. Paleozoic era.
d. Mesozoic era.
e. Cenozoic era.
e
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Which organism(s) ferment milk lactose, producing acids that curdle the milk?
A. Streptococcus lactis and Lactobacillus B. Leuconostoc mesenteroides C. Propionibacterium D. Spirulina E. Saccharomyces cerevisiae
The progression of your garden from sunflowers to birch trees is an example of:
A. succession. B. evolution. C. ecology. D. competition. E. None of the responses is correct.
Some marine species of cyanobacteria ________.
A. do not have flagella but are, nonetheless, motile by some unknown mechanism B. do not have flagella but are motile by means of pseudopods C. do not have flagella and are, therefore, nonmotile D. have flagella and are, therefore, motile
Infectious proteins that are heat resistant and that cannot be destroyed by ultraviolet light or most chemicals are known as ________
Fill in the blank(s) with correct word